diff options
Diffstat (limited to 'lib/phpFlickr/PEAR/DB')
| -rw-r--r-- | lib/phpFlickr/PEAR/DB/common.php | 2157 | ||||
| -rw-r--r-- | lib/phpFlickr/PEAR/DB/mysql.php | 1034 | ||||
| -rw-r--r-- | lib/phpFlickr/PEAR/DB/pgsql.php | 1097 | ||||
| -rw-r--r-- | lib/phpFlickr/PEAR/DB/storage.php | 504 |
4 files changed, 4792 insertions, 0 deletions
diff --git a/lib/phpFlickr/PEAR/DB/common.php b/lib/phpFlickr/PEAR/DB/common.php new file mode 100644 index 000000000..04e71ff52 --- /dev/null +++ b/lib/phpFlickr/PEAR/DB/common.php @@ -0,0 +1,2157 @@ +<?php + +/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ + +/** + * Contains the DB_common base class + * + * PHP versions 4 and 5 + * + * LICENSE: This source file is subject to version 3.0 of the PHP license + * that is available through the world-wide-web at the following URI: + * http://www.php.net/license/3_0.txt. If you did not receive a copy of + * the PHP License and are unable to obtain it through the web, please + * send a note to license@php.net so we can mail you a copy immediately. + * + * @category Database + * @package DB + * @author Stig Bakken <ssb@php.net> + * @author Tomas V.V. Cox <cox@idecnet.com> + * @author Daniel Convissor <danielc@php.net> + * @copyright 1997-2005 The PHP Group + * @license http://www.php.net/license/3_0.txt PHP License 3.0 + * @version CVS: $Id: common.php 32 2005-08-01 06:21:02Z dancoulter $ + * @link http://pear.php.net/package/DB + */ + +/** + * Obtain the PEAR class so it can be extended from + */ +require_once 'PEAR.php'; + +/** + * DB_common is the base class from which each database driver class extends + * + * All common methods are declared here. If a given DBMS driver contains + * a particular method, that method will overload the one here. + * + * @category Database + * @package DB + * @author Stig Bakken <ssb@php.net> + * @author Tomas V.V. Cox <cox@idecnet.com> + * @author Daniel Convissor <danielc@php.net> + * @copyright 1997-2005 The PHP Group + * @license http://www.php.net/license/3_0.txt PHP License 3.0 + * @version Release: @package_version@ + * @link http://pear.php.net/package/DB + */ +class DB_common extends PEAR +{ + // {{{ properties + + /** + * The current default fetch mode + * @var integer + */ + var $fetchmode = DB_FETCHMODE_ORDERED; + + /** + * The name of the class into which results should be fetched when + * DB_FETCHMODE_OBJECT is in effect + * + * @var string + */ + var $fetchmode_object_class = 'stdClass'; + + /** + * Was a connection present when the object was serialized()? + * @var bool + * @see DB_common::__sleep(), DB_common::__wake() + */ + var $was_connected = null; + + /** + * The most recently executed query + * @var string + */ + var $last_query = ''; + + /** + * Run-time configuration options + * + * The 'optimize' option has been deprecated. Use the 'portability' + * option instead. + * + * @var array + * @see DB_common::setOption() + */ + var $options = array( + 'result_buffering' => 500, + 'persistent' => false, + 'ssl' => false, + 'debug' => 0, + 'seqname_format' => '%s_seq', + 'autofree' => false, + 'portability' => DB_PORTABILITY_NONE, + 'optimize' => 'performance', // Deprecated. Use 'portability'. + ); + + /** + * The parameters from the most recently executed query + * @var array + * @since Property available since Release 1.7.0 + */ + var $last_parameters = array(); + + /** + * The elements from each prepared statement + * @var array + */ + var $prepare_tokens = array(); + + /** + * The data types of the various elements in each prepared statement + * @var array + */ + var $prepare_types = array(); + + /** + * The prepared queries + * @var array + */ + var $prepared_queries = array(); + + + // }}} + // {{{ DB_common + + /** + * This constructor calls <kbd>$this->PEAR('DB_Error')</kbd> + * + * @return void + */ + function DB_common() + { + $this->PEAR('DB_Error'); + } + + // }}} + // {{{ __sleep() + + /** + * Automatically indicates which properties should be saved + * when PHP's serialize() function is called + * + * @return array the array of properties names that should be saved + */ + function __sleep() + { + if ($this->connection) { + // Don't disconnect(), people use serialize() for many reasons + $this->was_connected = true; + } else { + $this->was_connected = false; + } + if (isset($this->autocommit)) { + return array('autocommit', + 'dbsyntax', + 'dsn', + 'features', + 'fetchmode', + 'fetchmode_object_class', + 'options', + 'was_connected', + ); + } else { + return array('dbsyntax', + 'dsn', + 'features', + 'fetchmode', + 'fetchmode_object_class', + 'options', + 'was_connected', + ); + } + } + + // }}} + // {{{ __wakeup() + + /** + * Automatically reconnects to the database when PHP's unserialize() + * function is called + * + * The reconnection attempt is only performed if the object was connected + * at the time PHP's serialize() function was run. + * + * @return void + */ + function __wakeup() + { + if ($this->was_connected) { + $this->connect($this->dsn, $this->options); + } + } + + // }}} + // {{{ __toString() + + /** + * Automatic string conversion for PHP 5 + * + * @return string a string describing the current PEAR DB object + * + * @since Method available since Release 1.7.0 + */ + function __toString() + { + $info = strtolower(get_class($this)); + $info .= ': (phptype=' . $this->phptype . + ', dbsyntax=' . $this->dbsyntax . + ')'; + if ($this->connection) { + $info .= ' [connected]'; + } + return $info; + } + + // }}} + // {{{ toString() + + /** + * DEPRECATED: String conversion method + * + * @return string a string describing the current PEAR DB object + * + * @deprecated Method deprecated in Release 1.7.0 + */ + function toString() + { + return $this->__toString(); + } + + // }}} + // {{{ quoteString() + + /** + * DEPRECATED: Quotes a string so it can be safely used within string + * delimiters in a query + * + * @param string $string the string to be quoted + * + * @return string the quoted string + * + * @see DB_common::quoteSmart(), DB_common::escapeSimple() + * @deprecated Method deprecated some time before Release 1.2 + */ + function quoteString($string) + { + $string = $this->quote($string); + if ($string{0} == "'") { + return substr($string, 1, -1); + } + return $string; + } + + // }}} + // {{{ quote() + + /** + * DEPRECATED: Quotes a string so it can be safely used in a query + * + * @param string $string the string to quote + * + * @return string the quoted string or the string <samp>NULL</samp> + * if the value submitted is <kbd>null</kbd>. + * + * @see DB_common::quoteSmart(), DB_common::escapeSimple() + * @deprecated Deprecated in release 1.6.0 + */ + function quote($string = null) + { + return ($string === null) ? 'NULL' + : "'" . str_replace("'", "''", $string) . "'"; + } + + // }}} + // {{{ quoteIdentifier() + + /** + * Quotes a string so it can be safely used as a table or column name + * + * Delimiting style depends on which database driver is being used. + * + * NOTE: just because you CAN use delimited identifiers doesn't mean + * you SHOULD use them. In general, they end up causing way more + * problems than they solve. + * + * Portability is broken by using the following characters inside + * delimited identifiers: + * + backtick (<kbd>`</kbd>) -- due to MySQL + * + double quote (<kbd>"</kbd>) -- due to Oracle + * + brackets (<kbd>[</kbd> or <kbd>]</kbd>) -- due to Access + * + * Delimited identifiers are known to generally work correctly under + * the following drivers: + * + mssql + * + mysql + * + mysqli + * + oci8 + * + odbc(access) + * + odbc(db2) + * + pgsql + * + sqlite + * + sybase (must execute <kbd>set quoted_identifier on</kbd> sometime + * prior to use) + * + * InterBase doesn't seem to be able to use delimited identifiers + * via PHP 4. They work fine under PHP 5. + * + * @param string $str the identifier name to be quoted + * + * @return string the quoted identifier + * + * @since Method available since Release 1.6.0 + */ + function quoteIdentifier($str) + { + return '"' . str_replace('"', '""', $str) . '"'; + } + + // }}} + // {{{ quoteSmart() + + /** + * Formats input so it can be safely used in a query + * + * The output depends on the PHP data type of input and the database + * type being used. + * + * @param mixed $in the data to be formatted + * + * @return mixed the formatted data. The format depends on the input's + * PHP type: + * <ul> + * <li> + * <kbd>input</kbd> -> <samp>returns</samp> + * </li> + * <li> + * <kbd>null</kbd> -> the string <samp>NULL</samp> + * </li> + * <li> + * <kbd>integer</kbd> or <kbd>double</kbd> -> the unquoted number + * </li> + * <li> + * <kbd>bool</kbd> -> output depends on the driver in use + * Most drivers return integers: <samp>1</samp> if + * <kbd>true</kbd> or <samp>0</samp> if + * <kbd>false</kbd>. + * Some return strings: <samp>TRUE</samp> if + * <kbd>true</kbd> or <samp>FALSE</samp> if + * <kbd>false</kbd>. + * Finally one returns strings: <samp>T</samp> if + * <kbd>true</kbd> or <samp>F</samp> if + * <kbd>false</kbd>. Here is a list of each DBMS, + * the values returned and the suggested column type: + * <ul> + * <li> + * <kbd>dbase</kbd> -> <samp>T/F</samp> + * (<kbd>Logical</kbd>) + * </li> + * <li> + * <kbd>fbase</kbd> -> <samp>TRUE/FALSE</samp> + * (<kbd>BOOLEAN</kbd>) + * </li> + * <li> + * <kbd>ibase</kbd> -> <samp>1/0</samp> + * (<kbd>SMALLINT</kbd>) [1] + * </li> + * <li> + * <kbd>ifx</kbd> -> <samp>1/0</samp> + * (<kbd>SMALLINT</kbd>) [1] + * </li> + * <li> + * <kbd>msql</kbd> -> <samp>1/0</samp> + * (<kbd>INTEGER</kbd>) + * </li> + * <li> + * <kbd>mssql</kbd> -> <samp>1/0</samp> + * (<kbd>BIT</kbd>) + * </li> + * <li> + * <kbd>mysql</kbd> -> <samp>1/0</samp> + * (<kbd>TINYINT(1)</kbd>) + * </li> + * <li> + * <kbd>mysqli</kbd> -> <samp>1/0</samp> + * (<kbd>TINYINT(1)</kbd>) + * </li> + * <li> + * <kbd>oci8</kbd> -> <samp>1/0</samp> + * (<kbd>NUMBER(1)</kbd>) + * </li> + * <li> + * <kbd>odbc</kbd> -> <samp>1/0</samp> + * (<kbd>SMALLINT</kbd>) [1] + * </li> + * <li> + * <kbd>pgsql</kbd> -> <samp>TRUE/FALSE</samp> + * (<kbd>BOOLEAN</kbd>) + * </li> + * <li> + * <kbd>sqlite</kbd> -> <samp>1/0</samp> + * (<kbd>INTEGER</kbd>) + * </li> + * <li> + * <kbd>sybase</kbd> -> <samp>1/0</samp> + * (<kbd>TINYINT(1)</kbd>) + * </li> + * </ul> + * [1] Accommodate the lowest common denominator because not all + * versions of have <kbd>BOOLEAN</kbd>. + * </li> + * <li> + * other (including strings and numeric strings) -> + * the data with single quotes escaped by preceeding + * single quotes, backslashes are escaped by preceeding + * backslashes, then the whole string is encapsulated + * between single quotes + * </li> + * </ul> + * + * @see DB_common::escapeSimple() + * @since Method available since Release 1.6.0 + */ + function quoteSmart($in) + { + if (is_int($in) || is_double($in)) { + return $in; + } elseif (is_bool($in)) { + return $in ? 1 : 0; + } elseif (is_null($in)) { + return 'NULL'; + } else { + return "'" . $this->escapeSimple($in) . "'"; + } + } + + // }}} + // {{{ escapeSimple() + + /** + * Escapes a string according to the current DBMS's standards + * + * In SQLite, this makes things safe for inserts/updates, but may + * cause problems when performing text comparisons against columns + * containing binary data. See the + * {@link http://php.net/sqlite_escape_string PHP manual} for more info. + * + * @param string $str the string to be escaped + * + * @return string the escaped string + * + * @see DB_common::quoteSmart() + * @since Method available since Release 1.6.0 + */ + function escapeSimple($str) + { + return str_replace("'", "''", $str); + } + + // }}} + // {{{ provides() + + /** + * Tells whether the present driver supports a given feature + * + * @param string $feature the feature you're curious about + * + * @return bool whether this driver supports $feature + */ + function provides($feature) + { + return $this->features[$feature]; + } + + // }}} + // {{{ setFetchMode() + + /** + * Sets the fetch mode that should be used by default for query results + * + * @param integer $fetchmode DB_FETCHMODE_ORDERED, DB_FETCHMODE_ASSOC + * or DB_FETCHMODE_OBJECT + * @param string $object_class the class name of the object to be returned + * by the fetch methods when the + * DB_FETCHMODE_OBJECT mode is selected. + * If no class is specified by default a cast + * to object from the assoc array row will be + * done. There is also the posibility to use + * and extend the 'DB_row' class. + * + * @see DB_FETCHMODE_ORDERED, DB_FETCHMODE_ASSOC, DB_FETCHMODE_OBJECT + */ + function setFetchMode($fetchmode, $object_class = 'stdClass') + { + switch ($fetchmode) { + case DB_FETCHMODE_OBJECT: + $this->fetchmode_object_class = $object_class; + case DB_FETCHMODE_ORDERED: + case DB_FETCHMODE_ASSOC: + $this->fetchmode = $fetchmode; + break; + default: + return $this->raiseError('invalid fetchmode mode'); + } + } + + // }}} + // {{{ setOption() + + /** + * Sets run-time configuration options for PEAR DB + * + * Options, their data types, default values and description: + * <ul> + * <li> + * <var>autofree</var> <kbd>boolean</kbd> = <samp>false</samp> + * <br />should results be freed automatically when there are no + * more rows? + * </li><li> + * <var>result_buffering</var> <kbd>integer</kbd> = <samp>500</samp> + * <br />how many rows of the result set should be buffered? + * <br />In mysql: mysql_unbuffered_query() is used instead of + * mysql_query() if this value is 0. (Release 1.7.0) + * <br />In oci8: this value is passed to ocisetprefetch(). + * (Release 1.7.0) + * </li><li> + * <var>debug</var> <kbd>integer</kbd> = <samp>0</samp> + * <br />debug level + * </li><li> + * <var>persistent</var> <kbd>boolean</kbd> = <samp>false</samp> + * <br />should the connection be persistent? + * </li><li> + * <var>portability</var> <kbd>integer</kbd> = <samp>DB_PORTABILITY_NONE</samp> + * <br />portability mode constant (see below) + * </li><li> + * <var>seqname_format</var> <kbd>string</kbd> = <samp>%s_seq</samp> + * <br />the sprintf() format string used on sequence names. This + * format is applied to sequence names passed to + * createSequence(), nextID() and dropSequence(). + * </li><li> + * <var>ssl</var> <kbd>boolean</kbd> = <samp>false</samp> + * <br />use ssl to connect? + * </li> + * </ul> + * + * ----------------------------------------- + * + * PORTABILITY MODES + * + * These modes are bitwised, so they can be combined using <kbd>|</kbd> + * and removed using <kbd>^</kbd>. See the examples section below on how + * to do this. + * + * <samp>DB_PORTABILITY_NONE</samp> + * turn off all portability features + * + * This mode gets automatically turned on if the deprecated + * <var>optimize</var> option gets set to <samp>performance</samp>. + * + * + * <samp>DB_PORTABILITY_LOWERCASE</samp> + * convert names of tables and fields to lower case when using + * <kbd>get*()</kbd>, <kbd>fetch*()</kbd> and <kbd>tableInfo()</kbd> + * + * This mode gets automatically turned on in the following databases + * if the deprecated option <var>optimize</var> gets set to + * <samp>portability</samp>: + * + oci8 + * + * + * <samp>DB_PORTABILITY_RTRIM</samp> + * right trim the data output by <kbd>get*()</kbd> <kbd>fetch*()</kbd> + * + * + * <samp>DB_PORTABILITY_DELETE_COUNT</samp> + * force reporting the number of rows deleted + * + * Some DBMS's don't count the number of rows deleted when performing + * simple <kbd>DELETE FROM tablename</kbd> queries. This portability + * mode tricks such DBMS's into telling the count by adding + * <samp>WHERE 1=1</samp> to the end of <kbd>DELETE</kbd> queries. + * + * This mode gets automatically turned on in the following databases + * if the deprecated option <var>optimize</var> gets set to + * <samp>portability</samp>: + * + fbsql + * + mysql + * + mysqli + * + sqlite + * + * + * <samp>DB_PORTABILITY_NUMROWS</samp> + * enable hack that makes <kbd>numRows()</kbd> work in Oracle + * + * This mode gets automatically turned on in the following databases + * if the deprecated option <var>optimize</var> gets set to + * <samp>portability</samp>: + * + oci8 + * + * + * <samp>DB_PORTABILITY_ERRORS</samp> + * makes certain error messages in certain drivers compatible + * with those from other DBMS's + * + * + mysql, mysqli: change unique/primary key constraints + * DB_ERROR_ALREADY_EXISTS -> DB_ERROR_CONSTRAINT + * + * + odbc(access): MS's ODBC driver reports 'no such field' as code + * 07001, which means 'too few parameters.' When this option is on + * that code gets mapped to DB_ERROR_NOSUCHFIELD. + * DB_ERROR_MISMATCH -> DB_ERROR_NOSUCHFIELD + * + * <samp>DB_PORTABILITY_NULL_TO_EMPTY</samp> + * convert null values to empty strings in data output by get*() and + * fetch*(). Needed because Oracle considers empty strings to be null, + * while most other DBMS's know the difference between empty and null. + * + * + * <samp>DB_PORTABILITY_ALL</samp> + * turn on all portability features + * + * ----------------------------------------- + * + * Example 1. Simple setOption() example + * <code> + * $db->setOption('autofree', true); + * </code> + * + * Example 2. Portability for lowercasing and trimming + * <code> + * $db->setOption('portability', + * DB_PORTABILITY_LOWERCASE | DB_PORTABILITY_RTRIM); + * </code> + * + * Example 3. All portability options except trimming + * <code> + * $db->setOption('portability', + * DB_PORTABILITY_ALL ^ DB_PORTABILITY_RTRIM); + * </code> + * + * @param string $option option name + * @param mixed $value value for the option + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @see DB_common::$options + */ + function setOption($option, $value) + { + if (isset($this->options[$option])) { + $this->options[$option] = $value; + + /* + * Backwards compatibility check for the deprecated 'optimize' + * option. Done here in case settings change after connecting. + */ + if ($option == 'optimize') { + if ($value == 'portability') { + switch ($this->phptype) { + case 'oci8': + $this->options['portability'] = + DB_PORTABILITY_LOWERCASE | + DB_PORTABILITY_NUMROWS; + break; + case 'fbsql': + case 'mysql': + case 'mysqli': + case 'sqlite': + $this->options['portability'] = + DB_PORTABILITY_DELETE_COUNT; + break; + } + } else { + $this->options['portability'] = DB_PORTABILITY_NONE; + } + } + + return DB_OK; + } + return $this->raiseError("unknown option $option"); + } + + // }}} + // {{{ getOption() + + /** + * Returns the value of an option + * + * @param string $option the option name you're curious about + * + * @return mixed the option's value + */ + function getOption($option) + { + if (isset($this->options[$option])) { + return $this->options[$option]; + } + return $this->raiseError("unknown option $option"); + } + + // }}} + // {{{ prepare() + + /** + * Prepares a query for multiple execution with execute() + * + * Creates a query that can be run multiple times. Each time it is run, + * the placeholders, if any, will be replaced by the contents of + * execute()'s $data argument. + * + * Three types of placeholders can be used: + * + <kbd>?</kbd> scalar value (i.e. strings, integers). The system + * will automatically quote and escape the data. + * + <kbd>!</kbd> value is inserted 'as is' + * + <kbd>&</kbd> requires a file name. The file's contents get + * inserted into the query (i.e. saving binary + * data in a db) + * + * Example 1. + * <code> + * $sth = $db->prepare('INSERT INTO tbl (a, b, c) VALUES (?, !, &)'); + * $data = array( + * "John's text", + * "'it''s good'", + * 'filename.txt' + * ); + * $res = $db->execute($sth, $data); + * </code> + * + * Use backslashes to escape placeholder characters if you don't want + * them to be interpreted as placeholders: + * <pre> + * "UPDATE foo SET col=? WHERE col='over \& under'" + * </pre> + * + * With some database backends, this is emulated. + * + * {@internal ibase and oci8 have their own prepare() methods.}} + * + * @param string $query the query to be prepared + * + * @return mixed DB statement resource on success. A DB_Error object + * on failure. + * + * @see DB_common::execute() + */ + function prepare($query) + { + $tokens = preg_split('/((?<!\\\)[&?!])/', $query, -1, + PREG_SPLIT_DELIM_CAPTURE); + $token = 0; + $types = array(); + $newtokens = array(); + + foreach ($tokens as $val) { + switch ($val) { + case '?': + $types[$token++] = DB_PARAM_SCALAR; + break; + case '&': + $types[$token++] = DB_PARAM_OPAQUE; + break; + case '!': + $types[$token++] = DB_PARAM_MISC; + break; + default: + $newtokens[] = preg_replace('/\\\([&?!])/', "\\1", $val); + } + } + + $this->prepare_tokens[] = &$newtokens; + end($this->prepare_tokens); + + $k = key($this->prepare_tokens); + $this->prepare_types[$k] = $types; + $this->prepared_queries[$k] = implode(' ', $newtokens); + + return $k; + } + + // }}} + // {{{ autoPrepare() + + /** + * Automaticaly generates an insert or update query and pass it to prepare() + * + * @param string $table the table name + * @param array $table_fields the array of field names + * @param int $mode a type of query to make: + * DB_AUTOQUERY_INSERT or DB_AUTOQUERY_UPDATE + * @param string $where for update queries: the WHERE clause to + * append to the SQL statement. Don't + * include the "WHERE" keyword. + * + * @return resource the query handle + * + * @uses DB_common::prepare(), DB_common::buildManipSQL() + */ + function autoPrepare($table, $table_fields, $mode = DB_AUTOQUERY_INSERT, + $where = false) + { + $query = $this->buildManipSQL($table, $table_fields, $mode, $where); + if (DB::isError($query)) { + return $query; + } + return $this->prepare($query); + } + + // }}} + // {{{ autoExecute() + + /** + * Automaticaly generates an insert or update query and call prepare() + * and execute() with it + * + * @param string $table the table name + * @param array $fields_values the associative array where $key is a + * field name and $value its value + * @param int $mode a type of query to make: + * DB_AUTOQUERY_INSERT or DB_AUTOQUERY_UPDATE + * @param string $where for update queries: the WHERE clause to + * append to the SQL statement. Don't + * include the "WHERE" keyword. + * + * @return mixed a new DB_result object for successful SELECT queries + * or DB_OK for successul data manipulation queries. + * A DB_Error object on failure. + * + * @uses DB_common::autoPrepare(), DB_common::execute() + */ + function autoExecute($table, $fields_values, $mode = DB_AUTOQUERY_INSERT, + $where = false) + { + $sth = $this->autoPrepare($table, array_keys($fields_values), $mode, + $where); + if (DB::isError($sth)) { + return $sth; + } + $ret =& $this->execute($sth, array_values($fields_values)); + $this->freePrepared($sth); + return $ret; + + } + + // }}} + // {{{ buildManipSQL() + + /** + * Produces an SQL query string for autoPrepare() + * + * Example: + * <pre> + * buildManipSQL('table_sql', array('field1', 'field2', 'field3'), + * DB_AUTOQUERY_INSERT); + * </pre> + * + * That returns + * <samp> + * INSERT INTO table_sql (field1,field2,field3) VALUES (?,?,?) + * </samp> + * + * NOTES: + * - This belongs more to a SQL Builder class, but this is a simple + * facility. + * - Be carefull! If you don't give a $where param with an UPDATE + * query, all the records of the table will be updated! + * + * @param string $table the table name + * @param array $table_fields the array of field names + * @param int $mode a type of query to make: + * DB_AUTOQUERY_INSERT or DB_AUTOQUERY_UPDATE + * @param string $where for update queries: the WHERE clause to + * append to the SQL statement. Don't + * include the "WHERE" keyword. + * + * @return string the sql query for autoPrepare() + */ + function buildManipSQL($table, $table_fields, $mode, $where = false) + { + if (count($table_fields) == 0) { + return $this->raiseError(DB_ERROR_NEED_MORE_DATA); + } + $first = true; + switch ($mode) { + case DB_AUTOQUERY_INSERT: + $values = ''; + $names = ''; + foreach ($table_fields as $value) { + if ($first) { + $first = false; + } else { + $names .= ','; + $values .= ','; + } + $names .= $value; + $values .= '?'; + } + return "INSERT INTO $table ($names) VALUES ($values)"; + case DB_AUTOQUERY_UPDATE: + $set = ''; + foreach ($table_fields as $value) { + if ($first) { + $first = false; + } else { + $set .= ','; + } + $set .= "$value = ?"; + } + $sql = "UPDATE $table SET $set"; + if ($where) { + $sql .= " WHERE $where"; + } + return $sql; + default: + return $this->raiseError(DB_ERROR_SYNTAX); + } + } + + // }}} + // {{{ execute() + + /** + * Executes a DB statement prepared with prepare() + * + * Example 1. + * <code> + * $sth = $db->prepare('INSERT INTO tbl (a, b, c) VALUES (?, !, &)'); + * $data = array( + * "John's text", + * "'it''s good'", + * 'filename.txt' + * ); + * $res =& $db->execute($sth, $data); + * </code> + * + * @param resource $stmt a DB statement resource returned from prepare() + * @param mixed $data array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return mixed a new DB_result object for successful SELECT queries + * or DB_OK for successul data manipulation queries. + * A DB_Error object on failure. + * + * {@internal ibase and oci8 have their own execute() methods.}} + * + * @see DB_common::prepare() + */ + function &execute($stmt, $data = array()) + { + $realquery = $this->executeEmulateQuery($stmt, $data); + if (DB::isError($realquery)) { + return $realquery; + } + $result = $this->simpleQuery($realquery); + + if ($result === DB_OK || DB::isError($result)) { + return $result; + } else { + $tmp =& new DB_result($this, $result); + return $tmp; + } + } + + // }}} + // {{{ executeEmulateQuery() + + /** + * Emulates executing prepared statements if the DBMS not support them + * + * @param resource $stmt a DB statement resource returned from execute() + * @param mixed $data array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return mixed a string containing the real query run when emulating + * prepare/execute. A DB_Error object on failure. + * + * @access protected + * @see DB_common::execute() + */ + function executeEmulateQuery($stmt, $data = array()) + { + $stmt = (int)$stmt; + $data = (array)$data; + $this->last_parameters = $data; + + if (count($this->prepare_types[$stmt]) != count($data)) { + $this->last_query = $this->prepared_queries[$stmt]; + return $this->raiseError(DB_ERROR_MISMATCH); + } + + $realquery = $this->prepare_tokens[$stmt][0]; + + $i = 0; + foreach ($data as $value) { + if ($this->prepare_types[$stmt][$i] == DB_PARAM_SCALAR) { + $realquery .= $this->quoteSmart($value); + } elseif ($this->prepare_types[$stmt][$i] == DB_PARAM_OPAQUE) { + $fp = @fopen($value, 'rb'); + if (!$fp) { + return $this->raiseError(DB_ERROR_ACCESS_VIOLATION); + } + $realquery .= $this->quoteSmart(fread($fp, filesize($value))); + fclose($fp); + } else { + $realquery .= $value; + } + + $realquery .= $this->prepare_tokens[$stmt][++$i]; + } + + return $realquery; + } + + // }}} + // {{{ executeMultiple() + + /** + * Performs several execute() calls on the same statement handle + * + * $data must be an array indexed numerically + * from 0, one execute call is done for every "row" in the array. + * + * If an error occurs during execute(), executeMultiple() does not + * execute the unfinished rows, but rather returns that error. + * + * @param resource $stmt query handle from prepare() + * @param array $data numeric array containing the + * data to insert into the query + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @see DB_common::prepare(), DB_common::execute() + */ + function executeMultiple($stmt, $data) + { + foreach ($data as $value) { + $res =& $this->execute($stmt, $value); + if (DB::isError($res)) { + return $res; + } + } + return DB_OK; + } + + // }}} + // {{{ freePrepared() + + /** + * Frees the internal resources associated with a prepared query + * + * @param resource $stmt the prepared statement's PHP resource + * @param bool $free_resource should the PHP resource be freed too? + * Use false if you need to get data + * from the result set later. + * + * @return bool TRUE on success, FALSE if $result is invalid + * + * @see DB_common::prepare() + */ + function freePrepared($stmt, $free_resource = true) + { + $stmt = (int)$stmt; + if (isset($this->prepare_tokens[$stmt])) { + unset($this->prepare_tokens[$stmt]); + unset($this->prepare_types[$stmt]); + unset($this->prepared_queries[$stmt]); + return true; + } + return false; + } + + // }}} + // {{{ modifyQuery() + + /** + * Changes a query string for various DBMS specific reasons + * + * It is defined here to ensure all drivers have this method available. + * + * @param string $query the query string to modify + * + * @return string the modified query string + * + * @access protected + * @see DB_mysql::modifyQuery(), DB_oci8::modifyQuery(), + * DB_sqlite::modifyQuery() + */ + function modifyQuery($query) + { + return $query; + } + + // }}} + // {{{ modifyLimitQuery() + + /** + * Adds LIMIT clauses to a query string according to current DBMS standards + * + * It is defined here to assure that all implementations + * have this method defined. + * + * @param string $query the query to modify + * @param int $from the row to start to fetching (0 = the first row) + * @param int $count the numbers of rows to fetch + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return string the query string with LIMIT clauses added + * + * @access protected + */ + function modifyLimitQuery($query, $from, $count, $params = array()) + { + return $query; + } + + // }}} + // {{{ query() + + /** + * Sends a query to the database server + * + * The query string can be either a normal statement to be sent directly + * to the server OR if <var>$params</var> are passed the query can have + * placeholders and it will be passed through prepare() and execute(). + * + * @param string $query the SQL query or the statement to prepare + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return mixed a new DB_result object for successful SELECT queries + * or DB_OK for successul data manipulation queries. + * A DB_Error object on failure. + * + * @see DB_result, DB_common::prepare(), DB_common::execute() + */ + function &query($query, $params = array()) + { + if (sizeof($params) > 0) { + $sth = $this->prepare($query); + if (DB::isError($sth)) { + return $sth; + } + $ret =& $this->execute($sth, $params); + $this->freePrepared($sth, false); + return $ret; + } else { + $this->last_parameters = array(); + $result = $this->simpleQuery($query); + if ($result === DB_OK || DB::isError($result)) { + return $result; + } else { + $tmp =& new DB_result($this, $result); + return $tmp; + } + } + } + + // }}} + // {{{ limitQuery() + + /** + * Generates and executes a LIMIT query + * + * @param string $query the query + * @param intr $from the row to start to fetching (0 = the first row) + * @param int $count the numbers of rows to fetch + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return mixed a new DB_result object for successful SELECT queries + * or DB_OK for successul data manipulation queries. + * A DB_Error object on failure. + */ + function &limitQuery($query, $from, $count, $params = array()) + { + $query = $this->modifyLimitQuery($query, $from, $count, $params); + if (DB::isError($query)){ + return $query; + } + $result =& $this->query($query, $params); + if (is_a($result, 'DB_result')) { + $result->setOption('limit_from', $from); + $result->setOption('limit_count', $count); + } + return $result; + } + + // }}} + // {{{ getOne() + + /** + * Fetches the first column of the first row from a query result + * + * Takes care of doing the query and freeing the results when finished. + * + * @param string $query the SQL query + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return mixed the returned value of the query. + * A DB_Error object on failure. + */ + function &getOne($query, $params = array()) + { + $params = (array)$params; + // modifyLimitQuery() would be nice here, but it causes BC issues + if (sizeof($params) > 0) { + $sth = $this->prepare($query); + if (DB::isError($sth)) { + return $sth; + } + $res =& $this->execute($sth, $params); + $this->freePrepared($sth); + } else { + $res =& $this->query($query); + } + + if (DB::isError($res)) { + return $res; + } + + $err = $res->fetchInto($row, DB_FETCHMODE_ORDERED); + $res->free(); + + if ($err !== DB_OK) { + return $err; + } + + return $row[0]; + } + + // }}} + // {{{ getRow() + + /** + * Fetches the first row of data returned from a query result + * + * Takes care of doing the query and freeing the results when finished. + * + * @param string $query the SQL query + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * @param int $fetchmode the fetch mode to use + * + * @return array the first row of results as an array. + * A DB_Error object on failure. + */ + function &getRow($query, $params = array(), + $fetchmode = DB_FETCHMODE_DEFAULT) + { + // compat check, the params and fetchmode parameters used to + // have the opposite order + if (!is_array($params)) { + if (is_array($fetchmode)) { + if ($params === null) { + $tmp = DB_FETCHMODE_DEFAULT; + } else { + $tmp = $params; + } + $params = $fetchmode; + $fetchmode = $tmp; + } elseif ($params !== null) { + $fetchmode = $params; + $params = array(); + } + } + // modifyLimitQuery() would be nice here, but it causes BC issues + if (sizeof($params) > 0) { + $sth = $this->prepare($query); + if (DB::isError($sth)) { + return $sth; + } + $res =& $this->execute($sth, $params); + $this->freePrepared($sth); + } else { + $res =& $this->query($query); + } + + if (DB::isError($res)) { + return $res; + } + + $err = $res->fetchInto($row, $fetchmode); + + $res->free(); + + if ($err !== DB_OK) { + return $err; + } + + return $row; + } + + // }}} + // {{{ getCol() + + /** + * Fetches a single column from a query result and returns it as an + * indexed array + * + * @param string $query the SQL query + * @param mixed $col which column to return (integer [column number, + * starting at 0] or string [column name]) + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return array the results as an array. A DB_Error object on failure. + * + * @see DB_common::query() + */ + function &getCol($query, $col = 0, $params = array()) + { + $params = (array)$params; + if (sizeof($params) > 0) { + $sth = $this->prepare($query); + + if (DB::isError($sth)) { + return $sth; + } + + $res =& $this->execute($sth, $params); + $this->freePrepared($sth); + } else { + $res =& $this->query($query); + } + + if (DB::isError($res)) { + return $res; + } + + $fetchmode = is_int($col) ? DB_FETCHMODE_ORDERED : DB_FETCHMODE_ASSOC; + + if (!is_array($row = $res->fetchRow($fetchmode))) { + $ret = array(); + } else { + if (!array_key_exists($col, $row)) { + $ret =& $this->raiseError(DB_ERROR_NOSUCHFIELD); + } else { + $ret = array($row[$col]); + while (is_array($row = $res->fetchRow($fetchmode))) { + $ret[] = $row[$col]; + } + } + } + + $res->free(); + + if (DB::isError($row)) { + $ret = $row; + } + + return $ret; + } + + // }}} + // {{{ getAssoc() + + /** + * Fetches an entire query result and returns it as an + * associative array using the first column as the key + * + * If the result set contains more than two columns, the value + * will be an array of the values from column 2-n. If the result + * set contains only two columns, the returned value will be a + * scalar with the value of the second column (unless forced to an + * array with the $force_array parameter). A DB error code is + * returned on errors. If the result set contains fewer than two + * columns, a DB_ERROR_TRUNCATED error is returned. + * + * For example, if the table "mytable" contains: + * + * <pre> + * ID TEXT DATE + * -------------------------------- + * 1 'one' 944679408 + * 2 'two' 944679408 + * 3 'three' 944679408 + * </pre> + * + * Then the call getAssoc('SELECT id,text FROM mytable') returns: + * <pre> + * array( + * '1' => 'one', + * '2' => 'two', + * '3' => 'three', + * ) + * </pre> + * + * ...while the call getAssoc('SELECT id,text,date FROM mytable') returns: + * <pre> + * array( + * '1' => array('one', '944679408'), + * '2' => array('two', '944679408'), + * '3' => array('three', '944679408') + * ) + * </pre> + * + * If the more than one row occurs with the same value in the + * first column, the last row overwrites all previous ones by + * default. Use the $group parameter if you don't want to + * overwrite like this. Example: + * + * <pre> + * getAssoc('SELECT category,id,name FROM mytable', false, null, + * DB_FETCHMODE_ASSOC, true) returns: + * + * array( + * '1' => array(array('id' => '4', 'name' => 'number four'), + * array('id' => '6', 'name' => 'number six') + * ), + * '9' => array(array('id' => '4', 'name' => 'number four'), + * array('id' => '6', 'name' => 'number six') + * ) + * ) + * </pre> + * + * Keep in mind that database functions in PHP usually return string + * values for results regardless of the database's internal type. + * + * @param string $query the SQL query + * @param bool $force_array used only when the query returns + * exactly two columns. If true, the values + * of the returned array will be one-element + * arrays instead of scalars. + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of + * items passed must match quantity of + * placeholders in query: meaning 1 + * placeholder for non-array parameters or + * 1 placeholder per array element. + * @param int $fetchmode the fetch mode to use + * @param bool $group if true, the values of the returned array + * is wrapped in another array. If the same + * key value (in the first column) repeats + * itself, the values will be appended to + * this array instead of overwriting the + * existing values. + * + * @return array the associative array containing the query results. + * A DB_Error object on failure. + */ + function &getAssoc($query, $force_array = false, $params = array(), + $fetchmode = DB_FETCHMODE_DEFAULT, $group = false) + { + $params = (array)$params; + if (sizeof($params) > 0) { + $sth = $this->prepare($query); + + if (DB::isError($sth)) { + return $sth; + } + + $res =& $this->execute($sth, $params); + $this->freePrepared($sth); + } else { + $res =& $this->query($query); + } + + if (DB::isError($res)) { + return $res; + } + if ($fetchmode == DB_FETCHMODE_DEFAULT) { + $fetchmode = $this->fetchmode; + } + $cols = $res->numCols(); + + if ($cols < 2) { + $tmp =& $this->raiseError(DB_ERROR_TRUNCATED); + return $tmp; + } + + $results = array(); + + if ($cols > 2 || $force_array) { + // return array values + // XXX this part can be optimized + if ($fetchmode == DB_FETCHMODE_ASSOC) { + while (is_array($row = $res->fetchRow(DB_FETCHMODE_ASSOC))) { + reset($row); + $key = current($row); + unset($row[key($row)]); + if ($group) { + $results[$key][] = $row; + } else { + $results[$key] = $row; + } + } + } elseif ($fetchmode == DB_FETCHMODE_OBJECT) { + while ($row = $res->fetchRow(DB_FETCHMODE_OBJECT)) { + $arr = get_object_vars($row); + $key = current($arr); + if ($group) { + $results[$key][] = $row; + } else { + $results[$key] = $row; + } + } + } else { + while (is_array($row = $res->fetchRow(DB_FETCHMODE_ORDERED))) { + // we shift away the first element to get + // indices running from 0 again + $key = array_shift($row); + if ($group) { + $results[$key][] = $row; + } else { + $results[$key] = $row; + } + } + } + if (DB::isError($row)) { + $results = $row; + } + } else { + // return scalar values + while (is_array($row = $res->fetchRow(DB_FETCHMODE_ORDERED))) { + if ($group) { + $results[$row[0]][] = $row[1]; + } else { + $results[$row[0]] = $row[1]; + } + } + if (DB::isError($row)) { + $results = $row; + } + } + + $res->free(); + + return $results; + } + + // }}} + // {{{ getAll() + + /** + * Fetches all of the rows from a query result + * + * @param string $query the SQL query + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of + * items passed must match quantity of + * placeholders in query: meaning 1 + * placeholder for non-array parameters or + * 1 placeholder per array element. + * @param int $fetchmode the fetch mode to use: + * + DB_FETCHMODE_ORDERED + * + DB_FETCHMODE_ASSOC + * + DB_FETCHMODE_ORDERED | DB_FETCHMODE_FLIPPED + * + DB_FETCHMODE_ASSOC | DB_FETCHMODE_FLIPPED + * + * @return array the nested array. A DB_Error object on failure. + */ + function &getAll($query, $params = array(), + $fetchmode = DB_FETCHMODE_DEFAULT) + { + // compat check, the params and fetchmode parameters used to + // have the opposite order + if (!is_array($params)) { + if (is_array($fetchmode)) { + if ($params === null) { + $tmp = DB_FETCHMODE_DEFAULT; + } else { + $tmp = $params; + } + $params = $fetchmode; + $fetchmode = $tmp; + } elseif ($params !== null) { + $fetchmode = $params; + $params = array(); + } + } + + if (sizeof($params) > 0) { + $sth = $this->prepare($query); + + if (DB::isError($sth)) { + return $sth; + } + + $res =& $this->execute($sth, $params); + $this->freePrepared($sth); + } else { + $res =& $this->query($query); + } + + if ($res === DB_OK || DB::isError($res)) { + return $res; + } + + $results = array(); + while (DB_OK === $res->fetchInto($row, $fetchmode)) { + if ($fetchmode & DB_FETCHMODE_FLIPPED) { + foreach ($row as $key => $val) { + $results[$key][] = $val; + } + } else { + $results[] = $row; + } + } + + $res->free(); + + if (DB::isError($row)) { + $tmp =& $this->raiseError($row); + return $tmp; + } + return $results; + } + + // }}} + // {{{ autoCommit() + + /** + * Enables or disables automatic commits + * + * @param bool $onoff true turns it on, false turns it off + * + * @return int DB_OK on success. A DB_Error object if the driver + * doesn't support auto-committing transactions. + */ + function autoCommit($onoff = false) + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ commit() + + /** + * Commits the current transaction + * + * @return int DB_OK on success. A DB_Error object on failure. + */ + function commit() + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ rollback() + + /** + * Reverts the current transaction + * + * @return int DB_OK on success. A DB_Error object on failure. + */ + function rollback() + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ numRows() + + /** + * Determines the number of rows in a query result + * + * @param resource $result the query result idenifier produced by PHP + * + * @return int the number of rows. A DB_Error object on failure. + */ + function numRows($result) + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ affectedRows() + + /** + * Determines the number of rows affected by a data maniuplation query + * + * 0 is returned for queries that don't manipulate data. + * + * @return int the number of rows. A DB_Error object on failure. + */ + function affectedRows() + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ getSequenceName() + + /** + * Generates the name used inside the database for a sequence + * + * The createSequence() docblock contains notes about storing sequence + * names. + * + * @param string $sqn the sequence's public name + * + * @return string the sequence's name in the backend + * + * @access protected + * @see DB_common::createSequence(), DB_common::dropSequence(), + * DB_common::nextID(), DB_common::setOption() + */ + function getSequenceName($sqn) + { + return sprintf($this->getOption('seqname_format'), + preg_replace('/[^a-z0-9_.]/i', '_', $sqn)); + } + + // }}} + // {{{ nextId() + + /** + * Returns the next free id in a sequence + * + * @param string $seq_name name of the sequence + * @param boolean $ondemand when true, the seqence is automatically + * created if it does not exist + * + * @return int the next id number in the sequence. + * A DB_Error object on failure. + * + * @see DB_common::createSequence(), DB_common::dropSequence(), + * DB_common::getSequenceName() + */ + function nextId($seq_name, $ondemand = true) + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ createSequence() + + /** + * Creates a new sequence + * + * The name of a given sequence is determined by passing the string + * provided in the <var>$seq_name</var> argument through PHP's sprintf() + * function using the value from the <var>seqname_format</var> option as + * the sprintf()'s format argument. + * + * <var>seqname_format</var> is set via setOption(). + * + * @param string $seq_name name of the new sequence + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @see DB_common::dropSequence(), DB_common::getSequenceName(), + * DB_common::nextID() + */ + function createSequence($seq_name) + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ dropSequence() + + /** + * Deletes a sequence + * + * @param string $seq_name name of the sequence to be deleted + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @see DB_common::createSequence(), DB_common::getSequenceName(), + * DB_common::nextID() + */ + function dropSequence($seq_name) + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ raiseError() + + /** + * Communicates an error and invoke error callbacks, etc + * + * Basically a wrapper for PEAR::raiseError without the message string. + * + * @param mixed integer error code, or a PEAR error object (all + * other parameters are ignored if this parameter is + * an object + * @param int error mode, see PEAR_Error docs + * @param mixed if error mode is PEAR_ERROR_TRIGGER, this is the + * error level (E_USER_NOTICE etc). If error mode is + * PEAR_ERROR_CALLBACK, this is the callback function, + * either as a function name, or as an array of an + * object and method name. For other error modes this + * parameter is ignored. + * @param string extra debug information. Defaults to the last + * query and native error code. + * @param mixed native error code, integer or string depending the + * backend + * + * @return object the PEAR_Error object + * + * @see PEAR_Error + */ + function &raiseError($code = DB_ERROR, $mode = null, $options = null, + $userinfo = null, $nativecode = null) + { + // The error is yet a DB error object + if (is_object($code)) { + // because we the static PEAR::raiseError, our global + // handler should be used if it is set + if ($mode === null && !empty($this->_default_error_mode)) { + $mode = $this->_default_error_mode; + $options = $this->_default_error_options; + } + $tmp = PEAR::raiseError($code, null, $mode, $options, + null, null, true); + return $tmp; + } + + if ($userinfo === null) { + $userinfo = $this->last_query; + } + + if ($nativecode) { + $userinfo .= ' [nativecode=' . trim($nativecode) . ']'; + } else { + $userinfo .= ' [DB Error: ' . DB::errorMessage($code) . ']'; + } + + $tmp = PEAR::raiseError(null, $code, $mode, $options, $userinfo, + 'DB_Error', true); + return $tmp; + } + + // }}} + // {{{ errorNative() + + /** + * Gets the DBMS' native error code produced by the last query + * + * @return mixed the DBMS' error code. A DB_Error object on failure. + */ + function errorNative() + { + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ errorCode() + + /** + * Maps native error codes to DB's portable ones + * + * Uses the <var>$errorcode_map</var> property defined in each driver. + * + * @param string|int $nativecode the error code returned by the DBMS + * + * @return int the portable DB error code. Return DB_ERROR if the + * current driver doesn't have a mapping for the + * $nativecode submitted. + */ + function errorCode($nativecode) + { + if (isset($this->errorcode_map[$nativecode])) { + return $this->errorcode_map[$nativecode]; + } + // Fall back to DB_ERROR if there was no mapping. + return DB_ERROR; + } + + // }}} + // {{{ errorMessage() + + /** + * Maps a DB error code to a textual message + * + * @param integer $dbcode the DB error code + * + * @return string the error message corresponding to the error code + * submitted. FALSE if the error code is unknown. + * + * @see DB::errorMessage() + */ + function errorMessage($dbcode) + { + return DB::errorMessage($this->errorcode_map[$dbcode]); + } + + // }}} + // {{{ tableInfo() + + /** + * Returns information about a table or a result set + * + * The format of the resulting array depends on which <var>$mode</var> + * you select. The sample output below is based on this query: + * <pre> + * SELECT tblFoo.fldID, tblFoo.fldPhone, tblBar.fldId + * FROM tblFoo + * JOIN tblBar ON tblFoo.fldId = tblBar.fldId + * </pre> + * + * <ul> + * <li> + * + * <kbd>null</kbd> (default) + * <pre> + * [0] => Array ( + * [table] => tblFoo + * [name] => fldId + * [type] => int + * [len] => 11 + * [flags] => primary_key not_null + * ) + * [1] => Array ( + * [table] => tblFoo + * [name] => fldPhone + * [type] => string + * [len] => 20 + * [flags] => + * ) + * [2] => Array ( + * [table] => tblBar + * [name] => fldId + * [type] => int + * [len] => 11 + * [flags] => primary_key not_null + * ) + * </pre> + * + * </li><li> + * + * <kbd>DB_TABLEINFO_ORDER</kbd> + * + * <p>In addition to the information found in the default output, + * a notation of the number of columns is provided by the + * <samp>num_fields</samp> element while the <samp>order</samp> + * element provides an array with the column names as the keys and + * their location index number (corresponding to the keys in the + * the default output) as the values.</p> + * + * <p>If a result set has identical field names, the last one is + * used.</p> + * + * <pre> + * [num_fields] => 3 + * [order] => Array ( + * [fldId] => 2 + * [fldTrans] => 1 + * ) + * </pre> + * + * </li><li> + * + * <kbd>DB_TABLEINFO_ORDERTABLE</kbd> + * + * <p>Similar to <kbd>DB_TABLEINFO_ORDER</kbd> but adds more + * dimensions to the array in which the table names are keys and + * the field names are sub-keys. This is helpful for queries that + * join tables which have identical field names.</p> + * + * <pre> + * [num_fields] => 3 + * [ordertable] => Array ( + * [tblFoo] => Array ( + * [fldId] => 0 + * [fldPhone] => 1 + * ) + * [tblBar] => Array ( + * [fldId] => 2 + * ) + * ) + * </pre> + * + * </li> + * </ul> + * + * The <samp>flags</samp> element contains a space separated list + * of extra information about the field. This data is inconsistent + * between DBMS's due to the way each DBMS works. + * + <samp>primary_key</samp> + * + <samp>unique_key</samp> + * + <samp>multiple_key</samp> + * + <samp>not_null</samp> + * + * Most DBMS's only provide the <samp>table</samp> and <samp>flags</samp> + * elements if <var>$result</var> is a table name. The following DBMS's + * provide full information from queries: + * + fbsql + * + mysql + * + * If the 'portability' option has <samp>DB_PORTABILITY_LOWERCASE</samp> + * turned on, the names of tables and fields will be lowercased. + * + * @param object|string $result DB_result object from a query or a + * string containing the name of a table. + * While this also accepts a query result + * resource identifier, this behavior is + * deprecated. + * @param int $mode either unused or one of the tableInfo modes: + * <kbd>DB_TABLEINFO_ORDERTABLE</kbd>, + * <kbd>DB_TABLEINFO_ORDER</kbd> or + * <kbd>DB_TABLEINFO_FULL</kbd> (which does both). + * These are bitwise, so the first two can be + * combined using <kbd>|</kbd>. + * + * @return array an associative array with the information requested. + * A DB_Error object on failure. + * + * @see DB_common::setOption() + */ + function tableInfo($result, $mode = null) + { + /* + * If the DB_<driver> class has a tableInfo() method, that one + * overrides this one. But, if the driver doesn't have one, + * this method runs and tells users about that fact. + */ + return $this->raiseError(DB_ERROR_NOT_CAPABLE); + } + + // }}} + // {{{ getTables() + + /** + * Lists the tables in the current database + * + * @return array the list of tables. A DB_Error object on failure. + * + * @deprecated Method deprecated some time before Release 1.2 + */ + function getTables() + { + return $this->getListOf('tables'); + } + + // }}} + // {{{ getListOf() + + /** + * Lists internal database information + * + * @param string $type type of information being sought. + * Common items being sought are: + * tables, databases, users, views, functions + * Each DBMS's has its own capabilities. + * + * @return array an array listing the items sought. + * A DB DB_Error object on failure. + */ + function getListOf($type) + { + $sql = $this->getSpecialQuery($type); + if ($sql === null) { + $this->last_query = ''; + return $this->raiseError(DB_ERROR_UNSUPPORTED); + } elseif (is_int($sql) || DB::isError($sql)) { + // Previous error + return $this->raiseError($sql); + } elseif (is_array($sql)) { + // Already the result + return $sql; + } + // Launch this query + return $this->getCol($sql); + } + + // }}} + // {{{ getSpecialQuery() + + /** + * Obtains the query string needed for listing a given type of objects + * + * @param string $type the kind of objects you want to retrieve + * + * @return string the SQL query string or null if the driver doesn't + * support the object type requested + * + * @access protected + * @see DB_common::getListOf() + */ + function getSpecialQuery($type) + { + return $this->raiseError(DB_ERROR_UNSUPPORTED); + } + + // }}} + // {{{ _rtrimArrayValues() + + /** + * Right-trims all strings in an array + * + * @param array $array the array to be trimmed (passed by reference) + * + * @return void + * + * @access protected + */ + function _rtrimArrayValues(&$array) + { + foreach ($array as $key => $value) { + if (is_string($value)) { + $array[$key] = rtrim($value); + } + } + } + + // }}} + // {{{ _convertNullArrayValuesToEmpty() + + /** + * Converts all null values in an array to empty strings + * + * @param array $array the array to be de-nullified (passed by reference) + * + * @return void + * + * @access protected + */ + function _convertNullArrayValuesToEmpty(&$array) + { + foreach ($array as $key => $value) { + if (is_null($value)) { + $array[$key] = ''; + } + } + } + + // }}} +} + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * End: + */ + +?> diff --git a/lib/phpFlickr/PEAR/DB/mysql.php b/lib/phpFlickr/PEAR/DB/mysql.php new file mode 100644 index 000000000..3ae0adf86 --- /dev/null +++ b/lib/phpFlickr/PEAR/DB/mysql.php @@ -0,0 +1,1034 @@ +<?php + +/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ + +/** + * The PEAR DB driver for PHP's mysql extension + * for interacting with MySQL databases + * + * PHP versions 4 and 5 + * + * LICENSE: This source file is subject to version 3.0 of the PHP license + * that is available through the world-wide-web at the following URI: + * http://www.php.net/license/3_0.txt. If you did not receive a copy of + * the PHP License and are unable to obtain it through the web, please + * send a note to license@php.net so we can mail you a copy immediately. + * + * @category Database + * @package DB + * @author Stig Bakken <ssb@php.net> + * @author Daniel Convissor <danielc@php.net> + * @copyright 1997-2005 The PHP Group + * @license http://www.php.net/license/3_0.txt PHP License 3.0 + * @version CVS: $Id: mysql.php 32 2005-08-01 06:21:02Z dancoulter $ + * @link http://pear.php.net/package/DB + */ + +/** + * Obtain the DB_common class so it can be extended from + */ +require_once 'DB/common.php'; + +/** + * The methods PEAR DB uses to interact with PHP's mysql extension + * for interacting with MySQL databases + * + * These methods overload the ones declared in DB_common. + * + * @category Database + * @package DB + * @author Stig Bakken <ssb@php.net> + * @author Daniel Convissor <danielc@php.net> + * @copyright 1997-2005 The PHP Group + * @license http://www.php.net/license/3_0.txt PHP License 3.0 + * @version Release: @package_version@ + * @link http://pear.php.net/package/DB + */ +class DB_mysql extends DB_common +{ + // {{{ properties + + /** + * The DB driver type (mysql, oci8, odbc, etc.) + * @var string + */ + var $phptype = 'mysql'; + + /** + * The database syntax variant to be used (db2, access, etc.), if any + * @var string + */ + var $dbsyntax = 'mysql'; + + /** + * The capabilities of this DB implementation + * + * The 'new_link' element contains the PHP version that first provided + * new_link support for this DBMS. Contains false if it's unsupported. + * + * Meaning of the 'limit' element: + * + 'emulate' = emulate with fetch row by number + * + 'alter' = alter the query + * + false = skip rows + * + * @var array + */ + var $features = array( + 'limit' => 'alter', + 'new_link' => '4.2.0', + 'numrows' => true, + 'pconnect' => true, + 'prepare' => false, + 'ssl' => false, + 'transactions' => true, + ); + + /** + * A mapping of native error codes to DB error codes + * @var array + */ + var $errorcode_map = array( + 1004 => DB_ERROR_CANNOT_CREATE, + 1005 => DB_ERROR_CANNOT_CREATE, + 1006 => DB_ERROR_CANNOT_CREATE, + 1007 => DB_ERROR_ALREADY_EXISTS, + 1008 => DB_ERROR_CANNOT_DROP, + 1022 => DB_ERROR_ALREADY_EXISTS, + 1044 => DB_ERROR_ACCESS_VIOLATION, + 1046 => DB_ERROR_NODBSELECTED, + 1048 => DB_ERROR_CONSTRAINT, + 1049 => DB_ERROR_NOSUCHDB, + 1050 => DB_ERROR_ALREADY_EXISTS, + 1051 => DB_ERROR_NOSUCHTABLE, + 1054 => DB_ERROR_NOSUCHFIELD, + 1061 => DB_ERROR_ALREADY_EXISTS, + 1062 => DB_ERROR_ALREADY_EXISTS, + 1064 => DB_ERROR_SYNTAX, + 1091 => DB_ERROR_NOT_FOUND, + 1100 => DB_ERROR_NOT_LOCKED, + 1136 => DB_ERROR_VALUE_COUNT_ON_ROW, + 1142 => DB_ERROR_ACCESS_VIOLATION, + 1146 => DB_ERROR_NOSUCHTABLE, + 1216 => DB_ERROR_CONSTRAINT, + 1217 => DB_ERROR_CONSTRAINT, + ); + + /** + * The raw database connection created by PHP + * @var resource + */ + var $connection; + + /** + * The DSN information for connecting to a database + * @var array + */ + var $dsn = array(); + + + /** + * Should data manipulation queries be committed automatically? + * @var bool + * @access private + */ + var $autocommit = true; + + /** + * The quantity of transactions begun + * + * {@internal While this is private, it can't actually be designated + * private in PHP 5 because it is directly accessed in the test suite.}} + * + * @var integer + * @access private + */ + var $transaction_opcount = 0; + + /** + * The database specified in the DSN + * + * It's a fix to allow calls to different databases in the same script. + * + * @var string + * @access private + */ + var $_db = ''; + + + // }}} + // {{{ constructor + + /** + * This constructor calls <kbd>$this->DB_common()</kbd> + * + * @return void + */ + function DB_mysql() + { + $this->DB_common(); + } + + // }}} + // {{{ connect() + + /** + * Connect to the database server, log in and open the database + * + * Don't call this method directly. Use DB::connect() instead. + * + * PEAR DB's mysql driver supports the following extra DSN options: + * + new_link If set to true, causes subsequent calls to connect() + * to return a new connection link instead of the + * existing one. WARNING: this is not portable to + * other DBMS's. Available since PEAR DB 1.7.0. + * + client_flags Any combination of MYSQL_CLIENT_* constants. + * Only used if PHP is at version 4.3.0 or greater. + * Available since PEAR DB 1.7.0. + * + * @param array $dsn the data source name + * @param bool $persistent should the connection be persistent? + * + * @return int DB_OK on success. A DB_Error object on failure. + */ + function connect($dsn, $persistent = false) + { + if (!PEAR::loadExtension('mysql')) { + return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); + } + + $this->dsn = $dsn; + if ($dsn['dbsyntax']) { + $this->dbsyntax = $dsn['dbsyntax']; + } + + $params = array(); + if ($dsn['protocol'] && $dsn['protocol'] == 'unix') { + $params[0] = ':' . $dsn['socket']; + } else { + $params[0] = $dsn['hostspec'] ? $dsn['hostspec'] + : 'localhost'; + if ($dsn['port']) { + $params[0] .= ':' . $dsn['port']; + } + } + $params[] = $dsn['username'] ? $dsn['username'] : null; + $params[] = $dsn['password'] ? $dsn['password'] : null; + + if (!$persistent) { + if (isset($dsn['new_link']) + && ($dsn['new_link'] == 'true' || $dsn['new_link'] === true)) + { + $params[] = true; + } else { + $params[] = false; + } + } + if (version_compare(phpversion(), '4.3.0', '>=')) { + $params[] = isset($dsn['client_flags']) + ? $dsn['client_flags'] : null; + } + + $connect_function = $persistent ? 'mysql_pconnect' : 'mysql_connect'; + + $ini = ini_get('track_errors'); + $php_errormsg = ''; + if ($ini) { + $this->connection = @call_user_func_array($connect_function, + $params); + } else { + ini_set('track_errors', 1); + $this->connection = @call_user_func_array($connect_function, + $params); + ini_set('track_errors', $ini); + } + + if (!$this->connection) { + if (($err = @mysql_error()) != '') { + return $this->raiseError(DB_ERROR_CONNECT_FAILED, + null, null, null, + $err); + } else { + return $this->raiseError(DB_ERROR_CONNECT_FAILED, + null, null, null, + $php_errormsg); + } + } + + if ($dsn['database']) { + if (!@mysql_select_db($dsn['database'], $this->connection)) { + return $this->mysqlRaiseError(); + } + $this->_db = $dsn['database']; + } + + return DB_OK; + } + + // }}} + // {{{ disconnect() + + /** + * Disconnects from the database server + * + * @return bool TRUE on success, FALSE on failure + */ + function disconnect() + { + $ret = @mysql_close($this->connection); + $this->connection = null; + return $ret; + } + + // }}} + // {{{ simpleQuery() + + /** + * Sends a query to the database server + * + * Generally uses mysql_query(). If you want to use + * mysql_unbuffered_query() set the "result_buffering" option to 0 using + * setOptions(). This option was added in Release 1.7.0. + * + * @param string the SQL query string + * + * @return mixed + a PHP result resrouce for successful SELECT queries + * + the DB_OK constant for other successful queries + * + a DB_Error object on failure + */ + function simpleQuery($query) + { + $ismanip = DB::isManip($query); + $this->last_query = $query; + $query = $this->modifyQuery($query); + if ($this->_db) { + if (!@mysql_select_db($this->_db, $this->connection)) { + return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); + } + } + if (!$this->autocommit && $ismanip) { + if ($this->transaction_opcount == 0) { + $result = @mysql_query('SET AUTOCOMMIT=0', $this->connection); + $result = @mysql_query('BEGIN', $this->connection); + if (!$result) { + return $this->mysqlRaiseError(); + } + } + $this->transaction_opcount++; + } + if (!$this->options['result_buffering']) { + $result = @mysql_unbuffered_query($query, $this->connection); + } else { + $result = @mysql_query($query, $this->connection); + } + if (!$result) { + return $this->mysqlRaiseError(); + } + if (is_resource($result)) { + return $result; + } + return DB_OK; + } + + // }}} + // {{{ nextResult() + + /** + * Move the internal mysql result pointer to the next available result + * + * This method has not been implemented yet. + * + * @param a valid sql result resource + * + * @return false + */ + function nextResult($result) + { + return false; + } + + // }}} + // {{{ fetchInto() + + /** + * Places a row from the result set into the given array + * + * Formating of the array and the data therein are configurable. + * See DB_result::fetchInto() for more information. + * + * This method is not meant to be called directly. Use + * DB_result::fetchInto() instead. It can't be declared "protected" + * because DB_result is a separate object. + * + * @param resource $result the query result resource + * @param array $arr the referenced array to put the data in + * @param int $fetchmode how the resulting array should be indexed + * @param int $rownum the row number to fetch (0 = first row) + * + * @return mixed DB_OK on success, NULL when the end of a result set is + * reached or on failure + * + * @see DB_result::fetchInto() + */ + function fetchInto($result, &$arr, $fetchmode, $rownum = null) + { + if ($rownum !== null) { + if (!@mysql_data_seek($result, $rownum)) { + return null; + } + } + if ($fetchmode & DB_FETCHMODE_ASSOC) { + $arr = @mysql_fetch_array($result, MYSQL_ASSOC); + if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) { + $arr = array_change_key_case($arr, CASE_LOWER); + } + } else { + $arr = @mysql_fetch_row($result); + } + if (!$arr) { + return null; + } + if ($this->options['portability'] & DB_PORTABILITY_RTRIM) { + /* + * Even though this DBMS already trims output, we do this because + * a field might have intentional whitespace at the end that + * gets removed by DB_PORTABILITY_RTRIM under another driver. + */ + $this->_rtrimArrayValues($arr); + } + if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) { + $this->_convertNullArrayValuesToEmpty($arr); + } + return DB_OK; + } + + // }}} + // {{{ freeResult() + + /** + * Deletes the result set and frees the memory occupied by the result set + * + * This method is not meant to be called directly. Use + * DB_result::free() instead. It can't be declared "protected" + * because DB_result is a separate object. + * + * @param resource $result PHP's query result resource + * + * @return bool TRUE on success, FALSE if $result is invalid + * + * @see DB_result::free() + */ + function freeResult($result) + { + return @mysql_free_result($result); + } + + // }}} + // {{{ numCols() + + /** + * Gets the number of columns in a result set + * + * This method is not meant to be called directly. Use + * DB_result::numCols() instead. It can't be declared "protected" + * because DB_result is a separate object. + * + * @param resource $result PHP's query result resource + * + * @return int the number of columns. A DB_Error object on failure. + * + * @see DB_result::numCols() + */ + function numCols($result) + { + $cols = @mysql_num_fields($result); + if (!$cols) { + return $this->mysqlRaiseError(); + } + return $cols; + } + + // }}} + // {{{ numRows() + + /** + * Gets the number of rows in a result set + * + * This method is not meant to be called directly. Use + * DB_result::numRows() instead. It can't be declared "protected" + * because DB_result is a separate object. + * + * @param resource $result PHP's query result resource + * + * @return int the number of rows. A DB_Error object on failure. + * + * @see DB_result::numRows() + */ + function numRows($result) + { + $rows = @mysql_num_rows($result); + if ($rows === null) { + return $this->mysqlRaiseError(); + } + return $rows; + } + + // }}} + // {{{ autoCommit() + + /** + * Enables or disables automatic commits + * + * @param bool $onoff true turns it on, false turns it off + * + * @return int DB_OK on success. A DB_Error object if the driver + * doesn't support auto-committing transactions. + */ + function autoCommit($onoff = false) + { + // XXX if $this->transaction_opcount > 0, we should probably + // issue a warning here. + $this->autocommit = $onoff ? true : false; + return DB_OK; + } + + // }}} + // {{{ commit() + + /** + * Commits the current transaction + * + * @return int DB_OK on success. A DB_Error object on failure. + */ + function commit() + { + if ($this->transaction_opcount > 0) { + if ($this->_db) { + if (!@mysql_select_db($this->_db, $this->connection)) { + return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); + } + } + $result = @mysql_query('COMMIT', $this->connection); + $result = @mysql_query('SET AUTOCOMMIT=1', $this->connection); + $this->transaction_opcount = 0; + if (!$result) { + return $this->mysqlRaiseError(); + } + } + return DB_OK; + } + + // }}} + // {{{ rollback() + + /** + * Reverts the current transaction + * + * @return int DB_OK on success. A DB_Error object on failure. + */ + function rollback() + { + if ($this->transaction_opcount > 0) { + if ($this->_db) { + if (!@mysql_select_db($this->_db, $this->connection)) { + return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); + } + } + $result = @mysql_query('ROLLBACK', $this->connection); + $result = @mysql_query('SET AUTOCOMMIT=1', $this->connection); + $this->transaction_opcount = 0; + if (!$result) { + return $this->mysqlRaiseError(); + } + } + return DB_OK; + } + + // }}} + // {{{ affectedRows() + + /** + * Determines the number of rows affected by a data maniuplation query + * + * 0 is returned for queries that don't manipulate data. + * + * @return int the number of rows. A DB_Error object on failure. + */ + function affectedRows() + { + if (DB::isManip($this->last_query)) { + return @mysql_affected_rows($this->connection); + } else { + return 0; + } + } + + // }}} + // {{{ nextId() + + /** + * Returns the next free id in a sequence + * + * @param string $seq_name name of the sequence + * @param boolean $ondemand when true, the seqence is automatically + * created if it does not exist + * + * @return int the next id number in the sequence. + * A DB_Error object on failure. + * + * @see DB_common::nextID(), DB_common::getSequenceName(), + * DB_mysql::createSequence(), DB_mysql::dropSequence() + */ + function nextId($seq_name, $ondemand = true) + { + $seqname = $this->getSequenceName($seq_name); + do { + $repeat = 0; + $this->pushErrorHandling(PEAR_ERROR_RETURN); + $result = $this->query("UPDATE ${seqname} ". + 'SET id=LAST_INSERT_ID(id+1)'); + $this->popErrorHandling(); + if ($result === DB_OK) { + // COMMON CASE + $id = @mysql_insert_id($this->connection); + if ($id != 0) { + return $id; + } + // EMPTY SEQ TABLE + // Sequence table must be empty for some reason, so fill + // it and return 1 and obtain a user-level lock + $result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)"); + if (DB::isError($result)) { + return $this->raiseError($result); + } + if ($result == 0) { + // Failed to get the lock + return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED); + } + + // add the default value + $result = $this->query("REPLACE INTO ${seqname} (id) VALUES (0)"); + if (DB::isError($result)) { + return $this->raiseError($result); + } + + // Release the lock + $result = $this->getOne('SELECT RELEASE_LOCK(' + . "'${seqname}_lock')"); + if (DB::isError($result)) { + return $this->raiseError($result); + } + // We know what the result will be, so no need to try again + return 1; + + } elseif ($ondemand && DB::isError($result) && + $result->getCode() == DB_ERROR_NOSUCHTABLE) + { + // ONDEMAND TABLE CREATION + $result = $this->createSequence($seq_name); + if (DB::isError($result)) { + return $this->raiseError($result); + } else { + $repeat = 1; + } + + } elseif (DB::isError($result) && + $result->getCode() == DB_ERROR_ALREADY_EXISTS) + { + // BACKWARDS COMPAT + // see _BCsequence() comment + $result = $this->_BCsequence($seqname); + if (DB::isError($result)) { + return $this->raiseError($result); + } + $repeat = 1; + } + } while ($repeat); + + return $this->raiseError($result); + } + + // }}} + // {{{ createSequence() + + /** + * Creates a new sequence + * + * @param string $seq_name name of the new sequence + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @see DB_common::createSequence(), DB_common::getSequenceName(), + * DB_mysql::nextID(), DB_mysql::dropSequence() + */ + function createSequence($seq_name) + { + $seqname = $this->getSequenceName($seq_name); + $res = $this->query('CREATE TABLE ' . $seqname + . ' (id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,' + . ' PRIMARY KEY(id))'); + if (DB::isError($res)) { + return $res; + } + // insert yields value 1, nextId call will generate ID 2 + $res = $this->query("INSERT INTO ${seqname} (id) VALUES (0)"); + if (DB::isError($res)) { + return $res; + } + // so reset to zero + return $this->query("UPDATE ${seqname} SET id = 0"); + } + + // }}} + // {{{ dropSequence() + + /** + * Deletes a sequence + * + * @param string $seq_name name of the sequence to be deleted + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @see DB_common::dropSequence(), DB_common::getSequenceName(), + * DB_mysql::nextID(), DB_mysql::createSequence() + */ + function dropSequence($seq_name) + { + return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name)); + } + + // }}} + // {{{ _BCsequence() + + /** + * Backwards compatibility with old sequence emulation implementation + * (clean up the dupes) + * + * @param string $seqname the sequence name to clean up + * + * @return bool true on success. A DB_Error object on failure. + * + * @access private + */ + function _BCsequence($seqname) + { + // Obtain a user-level lock... this will release any previous + // application locks, but unlike LOCK TABLES, it does not abort + // the current transaction and is much less frequently used. + $result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)"); + if (DB::isError($result)) { + return $result; + } + if ($result == 0) { + // Failed to get the lock, can't do the conversion, bail + // with a DB_ERROR_NOT_LOCKED error + return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED); + } + + $highest_id = $this->getOne("SELECT MAX(id) FROM ${seqname}"); + if (DB::isError($highest_id)) { + return $highest_id; + } + // This should kill all rows except the highest + // We should probably do something if $highest_id isn't + // numeric, but I'm at a loss as how to handle that... + $result = $this->query('DELETE FROM ' . $seqname + . " WHERE id <> $highest_id"); + if (DB::isError($result)) { + return $result; + } + + // If another thread has been waiting for this lock, + // it will go thru the above procedure, but will have no + // real effect + $result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')"); + if (DB::isError($result)) { + return $result; + } + return true; + } + + // }}} + // {{{ quoteIdentifier() + + /** + * Quotes a string so it can be safely used as a table or column name + * + * MySQL can't handle the backtick character (<kbd>`</kbd>) in + * table or column names. + * + * @param string $str identifier name to be quoted + * + * @return string quoted identifier string + * + * @see DB_common::quoteIdentifier() + * @since Method available since Release 1.6.0 + */ + function quoteIdentifier($str) + { + return '`' . $str . '`'; + } + + // }}} + // {{{ quote() + + /** + * @deprecated Deprecated in release 1.6.0 + */ + function quote($str) + { + return $this->quoteSmart($str); + } + + // }}} + // {{{ escapeSimple() + + /** + * Escapes a string according to the current DBMS's standards + * + * @param string $str the string to be escaped + * + * @return string the escaped string + * + * @see DB_common::quoteSmart() + * @since Method available since Release 1.6.0 + */ + function escapeSimple($str) + { + if (function_exists('mysql_real_escape_string')) { + return @mysql_real_escape_string($str, $this->connection); + } else { + return @mysql_escape_string($str); + } + } + + // }}} + // {{{ modifyQuery() + + /** + * Changes a query string for various DBMS specific reasons + * + * This little hack lets you know how many rows were deleted + * when running a "DELETE FROM table" query. Only implemented + * if the DB_PORTABILITY_DELETE_COUNT portability option is on. + * + * @param string $query the query string to modify + * + * @return string the modified query string + * + * @access protected + * @see DB_common::setOption() + */ + function modifyQuery($query) + { + if ($this->options['portability'] & DB_PORTABILITY_DELETE_COUNT) { + // "DELETE FROM table" gives 0 affected rows in MySQL. + // This little hack lets you know how many rows were deleted. + if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) { + $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/', + 'DELETE FROM \1 WHERE 1=1', $query); + } + } + return $query; + } + + // }}} + // {{{ modifyLimitQuery() + + /** + * Adds LIMIT clauses to a query string according to current DBMS standards + * + * @param string $query the query to modify + * @param int $from the row to start to fetching (0 = the first row) + * @param int $count the numbers of rows to fetch + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return string the query string with LIMIT clauses added + * + * @access protected + */ + function modifyLimitQuery($query, $from, $count, $params = array()) + { + if (DB::isManip($query)) { + return $query . " LIMIT $count"; + } else { + return $query . " LIMIT $from, $count"; + } + } + + // }}} + // {{{ mysqlRaiseError() + + /** + * Produces a DB_Error object regarding the current problem + * + * @param int $errno if the error is being manually raised pass a + * DB_ERROR* constant here. If this isn't passed + * the error information gathered from the DBMS. + * + * @return object the DB_Error object + * + * @see DB_common::raiseError(), + * DB_mysql::errorNative(), DB_common::errorCode() + */ + function mysqlRaiseError($errno = null) + { + if ($errno === null) { + if ($this->options['portability'] & DB_PORTABILITY_ERRORS) { + $this->errorcode_map[1022] = DB_ERROR_CONSTRAINT; + $this->errorcode_map[1048] = DB_ERROR_CONSTRAINT_NOT_NULL; + $this->errorcode_map[1062] = DB_ERROR_CONSTRAINT; + } else { + // Doing this in case mode changes during runtime. + $this->errorcode_map[1022] = DB_ERROR_ALREADY_EXISTS; + $this->errorcode_map[1048] = DB_ERROR_CONSTRAINT; + $this->errorcode_map[1062] = DB_ERROR_ALREADY_EXISTS; + } + $errno = $this->errorCode(mysql_errno($this->connection)); + } + return $this->raiseError($errno, null, null, null, + @mysql_errno($this->connection) . ' ** ' . + @mysql_error($this->connection)); + } + + // }}} + // {{{ errorNative() + + /** + * Gets the DBMS' native error code produced by the last query + * + * @return int the DBMS' error code + */ + function errorNative() + { + return @mysql_errno($this->connection); + } + + // }}} + // {{{ tableInfo() + + /** + * Returns information about a table or a result set + * + * @param object|string $result DB_result object from a query or a + * string containing the name of a table. + * While this also accepts a query result + * resource identifier, this behavior is + * deprecated. + * @param int $mode a valid tableInfo mode + * + * @return array an associative array with the information requested. + * A DB_Error object on failure. + * + * @see DB_common::tableInfo() + */ + function tableInfo($result, $mode = null) + { + if (is_string($result)) { + /* + * Probably received a table name. + * Create a result resource identifier. + */ + $id = @mysql_list_fields($this->dsn['database'], + $result, $this->connection); + $got_string = true; + } elseif (isset($result->result)) { + /* + * Probably received a result object. + * Extract the result resource identifier. + */ + $id = $result->result; + $got_string = false; + } else { + /* + * Probably received a result resource identifier. + * Copy it. + * Deprecated. Here for compatibility only. + */ + $id = $result; + $got_string = false; + } + + if (!is_resource($id)) { + return $this->mysqlRaiseError(DB_ERROR_NEED_MORE_DATA); + } + + if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { + $case_func = 'strtolower'; + } else { + $case_func = 'strval'; + } + + $count = @mysql_num_fields($id); + $res = array(); + + if ($mode) { + $res['num_fields'] = $count; + } + + for ($i = 0; $i < $count; $i++) { + $res[$i] = array( + 'table' => $case_func(@mysql_field_table($id, $i)), + 'name' => $case_func(@mysql_field_name($id, $i)), + 'type' => @mysql_field_type($id, $i), + 'len' => @mysql_field_len($id, $i), + 'flags' => @mysql_field_flags($id, $i), + ); + if ($mode & DB_TABLEINFO_ORDER) { + $res['order'][$res[$i]['name']] = $i; + } + if ($mode & DB_TABLEINFO_ORDERTABLE) { + $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; + } + } + + // free the result only if we were called on a table + if ($got_string) { + @mysql_free_result($id); + } + return $res; + } + + // }}} + // {{{ getSpecialQuery() + + /** + * Obtains the query string needed for listing a given type of objects + * + * @param string $type the kind of objects you want to retrieve + * + * @return string the SQL query string or null if the driver doesn't + * support the object type requested + * + * @access protected + * @see DB_common::getListOf() + */ + function getSpecialQuery($type) + { + switch ($type) { + case 'tables': + return 'SHOW TABLES'; + case 'users': + return 'SELECT DISTINCT User FROM mysql.user'; + case 'databases': + return 'SHOW DATABASES'; + default: + return null; + } + } + + // }}} + +} + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * End: + */ + +?> diff --git a/lib/phpFlickr/PEAR/DB/pgsql.php b/lib/phpFlickr/PEAR/DB/pgsql.php new file mode 100644 index 000000000..1e58f48d6 --- /dev/null +++ b/lib/phpFlickr/PEAR/DB/pgsql.php @@ -0,0 +1,1097 @@ +<?php + +/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ + +/** + * The PEAR DB driver for PHP's pgsql extension + * for interacting with PostgreSQL databases + * + * PHP versions 4 and 5 + * + * LICENSE: This source file is subject to version 3.0 of the PHP license + * that is available through the world-wide-web at the following URI: + * http://www.php.net/license/3_0.txt. If you did not receive a copy of + * the PHP License and are unable to obtain it through the web, please + * send a note to license@php.net so we can mail you a copy immediately. + * + * @category Database + * @package DB + * @author Rui Hirokawa <hirokawa@php.net> + * @author Stig Bakken <ssb@php.net> + * @author Daniel Convissor <danielc@php.net> + * @copyright 1997-2005 The PHP Group + * @license http://www.php.net/license/3_0.txt PHP License 3.0 + * @version CVS: $Id: pgsql.php 32 2005-08-01 06:21:02Z dancoulter $ + * @link http://pear.php.net/package/DB + */ + +/** + * Obtain the DB_common class so it can be extended from + */ +require_once 'DB/common.php'; + +/** + * The methods PEAR DB uses to interact with PHP's pgsql extension + * for interacting with PostgreSQL databases + * + * These methods overload the ones declared in DB_common. + * + * @category Database + * @package DB + * @author Rui Hirokawa <hirokawa@php.net> + * @author Stig Bakken <ssb@php.net> + * @author Daniel Convissor <danielc@php.net> + * @copyright 1997-2005 The PHP Group + * @license http://www.php.net/license/3_0.txt PHP License 3.0 + * @version Release: @package_version@ + * @link http://pear.php.net/package/DB + */ +class DB_pgsql extends DB_common +{ + // {{{ properties + + /** + * The DB driver type (mysql, oci8, odbc, etc.) + * @var string + */ + var $phptype = 'pgsql'; + + /** + * The database syntax variant to be used (db2, access, etc.), if any + * @var string + */ + var $dbsyntax = 'pgsql'; + + /** + * The capabilities of this DB implementation + * + * The 'new_link' element contains the PHP version that first provided + * new_link support for this DBMS. Contains false if it's unsupported. + * + * Meaning of the 'limit' element: + * + 'emulate' = emulate with fetch row by number + * + 'alter' = alter the query + * + false = skip rows + * + * @var array + */ + var $features = array( + 'limit' => 'alter', + 'new_link' => '4.3.0', + 'numrows' => true, + 'pconnect' => true, + 'prepare' => false, + 'ssl' => true, + 'transactions' => true, + ); + + /** + * A mapping of native error codes to DB error codes + * @var array + */ + var $errorcode_map = array( + ); + + /** + * The raw database connection created by PHP + * @var resource + */ + var $connection; + + /** + * The DSN information for connecting to a database + * @var array + */ + var $dsn = array(); + + + /** + * Should data manipulation queries be committed automatically? + * @var bool + * @access private + */ + var $autocommit = true; + + /** + * The quantity of transactions begun + * + * {@internal While this is private, it can't actually be designated + * private in PHP 5 because it is directly accessed in the test suite.}} + * + * @var integer + * @access private + */ + var $transaction_opcount = 0; + + /** + * The number of rows affected by a data manipulation query + * @var integer + */ + var $affected = 0; + + /** + * The current row being looked at in fetchInto() + * @var array + * @access private + */ + var $row = array(); + + /** + * The number of rows in a given result set + * @var array + * @access private + */ + var $_num_rows = array(); + + + // }}} + // {{{ constructor + + /** + * This constructor calls <kbd>$this->DB_common()</kbd> + * + * @return void + */ + function DB_pgsql() + { + $this->DB_common(); + } + + // }}} + // {{{ connect() + + /** + * Connect to the database server, log in and open the database + * + * Don't call this method directly. Use DB::connect() instead. + * + * PEAR DB's pgsql driver supports the following extra DSN options: + * + connect_timeout How many seconds to wait for a connection to + * be established. Available since PEAR DB 1.7.0. + * + new_link If set to true, causes subsequent calls to + * connect() to return a new connection link + * instead of the existing one. WARNING: this is + * not portable to other DBMS's. Available only + * if PHP is >= 4.3.0 and PEAR DB is >= 1.7.0. + * + options Command line options to be sent to the server. + * Available since PEAR DB 1.6.4. + * + service Specifies a service name in pg_service.conf that + * holds additional connection parameters. + * Available since PEAR DB 1.7.0. + * + sslmode How should SSL be used when connecting? Values: + * disable, allow, prefer or require. + * Available since PEAR DB 1.7.0. + * + tty This was used to specify where to send server + * debug output. Available since PEAR DB 1.6.4. + * + * Example of connecting to a new link via a socket: + * <code> + * require_once 'DB.php'; + * + * $dsn = 'pgsql://user:pass@unix(/tmp)/dbname?new_link=true'; + * $options = array( + * 'portability' => DB_PORTABILITY_ALL, + * ); + * + * $db =& DB::connect($dsn, $options); + * if (PEAR::isError($db)) { + * die($db->getMessage()); + * } + * </code> + * + * @param array $dsn the data source name + * @param bool $persistent should the connection be persistent? + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @link http://www.postgresql.org/docs/current/static/libpq.html#LIBPQ-CONNECT + */ + function connect($dsn, $persistent = false) + { + if (!PEAR::loadExtension('pgsql')) { + return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); + } + + $this->dsn = $dsn; + if ($dsn['dbsyntax']) { + $this->dbsyntax = $dsn['dbsyntax']; + } + + $protocol = $dsn['protocol'] ? $dsn['protocol'] : 'tcp'; + + $params = array(''); + if ($protocol == 'tcp') { + if ($dsn['hostspec']) { + $params[0] .= 'host=' . $dsn['hostspec']; + } + if ($dsn['port']) { + $params[0] .= ' port=' . $dsn['port']; + } + } elseif ($protocol == 'unix') { + // Allow for pg socket in non-standard locations. + if ($dsn['socket']) { + $params[0] .= 'host=' . $dsn['socket']; + } + if ($dsn['port']) { + $params[0] .= ' port=' . $dsn['port']; + } + } + if ($dsn['database']) { + $params[0] .= ' dbname=\'' . addslashes($dsn['database']) . '\''; + } + if ($dsn['username']) { + $params[0] .= ' user=\'' . addslashes($dsn['username']) . '\''; + } + if ($dsn['password']) { + $params[0] .= ' password=\'' . addslashes($dsn['password']) . '\''; + } + if (!empty($dsn['options'])) { + $params[0] .= ' options=' . $dsn['options']; + } + if (!empty($dsn['tty'])) { + $params[0] .= ' tty=' . $dsn['tty']; + } + if (!empty($dsn['connect_timeout'])) { + $params[0] .= ' connect_timeout=' . $dsn['connect_timeout']; + } + if (!empty($dsn['sslmode'])) { + $params[0] .= ' sslmode=' . $dsn['sslmode']; + } + if (!empty($dsn['service'])) { + $params[0] .= ' service=' . $dsn['service']; + } + + if (isset($dsn['new_link']) + && ($dsn['new_link'] == 'true' || $dsn['new_link'] === true)) + { + if (version_compare(phpversion(), '4.3.0', '>=')) { + $params[] = PGSQL_CONNECT_FORCE_NEW; + } + } + + $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect'; + + $ini = ini_get('track_errors'); + $php_errormsg = ''; + if ($ini) { + $this->connection = @call_user_func_array($connect_function, + $params); + } else { + ini_set('track_errors', 1); + $this->connection = @call_user_func_array($connect_function, + $params); + ini_set('track_errors', $ini); + } + + if (!$this->connection) { + return $this->raiseError(DB_ERROR_CONNECT_FAILED, + null, null, null, + $php_errormsg); + } + return DB_OK; + } + + // }}} + // {{{ disconnect() + + /** + * Disconnects from the database server + * + * @return bool TRUE on success, FALSE on failure + */ + function disconnect() + { + $ret = @pg_close($this->connection); + $this->connection = null; + return $ret; + } + + // }}} + // {{{ simpleQuery() + + /** + * Sends a query to the database server + * + * @param string the SQL query string + * + * @return mixed + a PHP result resrouce for successful SELECT queries + * + the DB_OK constant for other successful queries + * + a DB_Error object on failure + */ + function simpleQuery($query) + { + $ismanip = DB::isManip($query); + $this->last_query = $query; + $query = $this->modifyQuery($query); + if (!$this->autocommit && $ismanip) { + if ($this->transaction_opcount == 0) { + $result = @pg_exec($this->connection, 'begin;'); + if (!$result) { + return $this->pgsqlRaiseError(); + } + } + $this->transaction_opcount++; + } + $result = @pg_exec($this->connection, $query); + if (!$result) { + return $this->pgsqlRaiseError(); + } + // Determine which queries that should return data, and which + // should return an error code only. + if ($ismanip) { + $this->affected = @pg_affected_rows($result); + return DB_OK; + } elseif (preg_match('/^\s*\(*\s*(SELECT|EXPLAIN|SHOW)\s/si', $query)) { + /* PostgreSQL commands: + ABORT, ALTER, BEGIN, CLOSE, CLUSTER, COMMIT, COPY, + CREATE, DECLARE, DELETE, DROP TABLE, EXPLAIN, FETCH, + GRANT, INSERT, LISTEN, LOAD, LOCK, MOVE, NOTIFY, RESET, + REVOKE, ROLLBACK, SELECT, SELECT INTO, SET, SHOW, + UNLISTEN, UPDATE, VACUUM + */ + $this->row[(int)$result] = 0; // reset the row counter. + $numrows = $this->numRows($result); + if (is_object($numrows)) { + return $numrows; + } + $this->_num_rows[(int)$result] = $numrows; + $this->affected = 0; + return $result; + } else { + $this->affected = 0; + return DB_OK; + } + } + + // }}} + // {{{ nextResult() + + /** + * Move the internal pgsql result pointer to the next available result + * + * @param a valid fbsql result resource + * + * @access public + * + * @return true if a result is available otherwise return false + */ + function nextResult($result) + { + return false; + } + + // }}} + // {{{ fetchInto() + + /** + * Places a row from the result set into the given array + * + * Formating of the array and the data therein are configurable. + * See DB_result::fetchInto() for more information. + * + * This method is not meant to be called directly. Use + * DB_result::fetchInto() instead. It can't be declared "protected" + * because DB_result is a separate object. + * + * @param resource $result the query result resource + * @param array $arr the referenced array to put the data in + * @param int $fetchmode how the resulting array should be indexed + * @param int $rownum the row number to fetch (0 = first row) + * + * @return mixed DB_OK on success, NULL when the end of a result set is + * reached or on failure + * + * @see DB_result::fetchInto() + */ + function fetchInto($result, &$arr, $fetchmode, $rownum = null) + { + $result_int = (int)$result; + $rownum = ($rownum !== null) ? $rownum : $this->row[$result_int]; + if ($rownum >= $this->_num_rows[$result_int]) { + return null; + } + if ($fetchmode & DB_FETCHMODE_ASSOC) { + $arr = @pg_fetch_array($result, $rownum, PGSQL_ASSOC); + if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) { + $arr = array_change_key_case($arr, CASE_LOWER); + } + } else { + $arr = @pg_fetch_row($result, $rownum); + } + if (!$arr) { + return null; + } + if ($this->options['portability'] & DB_PORTABILITY_RTRIM) { + $this->_rtrimArrayValues($arr); + } + if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) { + $this->_convertNullArrayValuesToEmpty($arr); + } + $this->row[$result_int] = ++$rownum; + return DB_OK; + } + + // }}} + // {{{ freeResult() + + /** + * Deletes the result set and frees the memory occupied by the result set + * + * This method is not meant to be called directly. Use + * DB_result::free() instead. It can't be declared "protected" + * because DB_result is a separate object. + * + * @param resource $result PHP's query result resource + * + * @return bool TRUE on success, FALSE if $result is invalid + * + * @see DB_result::free() + */ + function freeResult($result) + { + if (is_resource($result)) { + unset($this->row[(int)$result]); + unset($this->_num_rows[(int)$result]); + $this->affected = 0; + return @pg_freeresult($result); + } + return false; + } + + // }}} + // {{{ quote() + + /** + * @deprecated Deprecated in release 1.6.0 + * @internal + */ + function quote($str) + { + return $this->quoteSmart($str); + } + + // }}} + // {{{ quoteSmart() + + /** + * Formats input so it can be safely used in a query + * + * @param mixed $in the data to be formatted + * + * @return mixed the formatted data. The format depends on the input's + * PHP type: + * + null = the string <samp>NULL</samp> + * + boolean = string <samp>TRUE</samp> or <samp>FALSE</samp> + * + integer or double = the unquoted number + * + other (including strings and numeric strings) = + * the data escaped according to MySQL's settings + * then encapsulated between single quotes + * + * @see DB_common::quoteSmart() + * @since Method available since Release 1.6.0 + */ + function quoteSmart($in) + { + if (is_int($in) || is_double($in)) { + return $in; + } elseif (is_bool($in)) { + return $in ? 'TRUE' : 'FALSE'; + } elseif (is_null($in)) { + return 'NULL'; + } else { + return "'" . $this->escapeSimple($in) . "'"; + } + } + + // }}} + // {{{ escapeSimple() + + /** + * Escapes a string according to the current DBMS's standards + * + * {@internal PostgreSQL treats a backslash as an escape character, + * so they are escaped as well. + * + * Not using pg_escape_string() yet because it requires PostgreSQL + * to be at version 7.2 or greater.}} + * + * @param string $str the string to be escaped + * + * @return string the escaped string + * + * @see DB_common::quoteSmart() + * @since Method available since Release 1.6.0 + */ + function escapeSimple($str) + { + return str_replace("'", "''", str_replace('\\', '\\\\', $str)); + } + + // }}} + // {{{ numCols() + + /** + * Gets the number of columns in a result set + * + * This method is not meant to be called directly. Use + * DB_result::numCols() instead. It can't be declared "protected" + * because DB_result is a separate object. + * + * @param resource $result PHP's query result resource + * + * @return int the number of columns. A DB_Error object on failure. + * + * @see DB_result::numCols() + */ + function numCols($result) + { + $cols = @pg_numfields($result); + if (!$cols) { + return $this->pgsqlRaiseError(); + } + return $cols; + } + + // }}} + // {{{ numRows() + + /** + * Gets the number of rows in a result set + * + * This method is not meant to be called directly. Use + * DB_result::numRows() instead. It can't be declared "protected" + * because DB_result is a separate object. + * + * @param resource $result PHP's query result resource + * + * @return int the number of rows. A DB_Error object on failure. + * + * @see DB_result::numRows() + */ + function numRows($result) + { + $rows = @pg_numrows($result); + if ($rows === null) { + return $this->pgsqlRaiseError(); + } + return $rows; + } + + // }}} + // {{{ autoCommit() + + /** + * Enables or disables automatic commits + * + * @param bool $onoff true turns it on, false turns it off + * + * @return int DB_OK on success. A DB_Error object if the driver + * doesn't support auto-committing transactions. + */ + function autoCommit($onoff = false) + { + // XXX if $this->transaction_opcount > 0, we should probably + // issue a warning here. + $this->autocommit = $onoff ? true : false; + return DB_OK; + } + + // }}} + // {{{ commit() + + /** + * Commits the current transaction + * + * @return int DB_OK on success. A DB_Error object on failure. + */ + function commit() + { + if ($this->transaction_opcount > 0) { + // (disabled) hack to shut up error messages from libpq.a + //@fclose(@fopen("php://stderr", "w")); + $result = @pg_exec($this->connection, 'end;'); + $this->transaction_opcount = 0; + if (!$result) { + return $this->pgsqlRaiseError(); + } + } + return DB_OK; + } + + // }}} + // {{{ rollback() + + /** + * Reverts the current transaction + * + * @return int DB_OK on success. A DB_Error object on failure. + */ + function rollback() + { + if ($this->transaction_opcount > 0) { + $result = @pg_exec($this->connection, 'abort;'); + $this->transaction_opcount = 0; + if (!$result) { + return $this->pgsqlRaiseError(); + } + } + return DB_OK; + } + + // }}} + // {{{ affectedRows() + + /** + * Determines the number of rows affected by a data maniuplation query + * + * 0 is returned for queries that don't manipulate data. + * + * @return int the number of rows. A DB_Error object on failure. + */ + function affectedRows() + { + return $this->affected; + } + + // }}} + // {{{ nextId() + + /** + * Returns the next free id in a sequence + * + * @param string $seq_name name of the sequence + * @param boolean $ondemand when true, the seqence is automatically + * created if it does not exist + * + * @return int the next id number in the sequence. + * A DB_Error object on failure. + * + * @see DB_common::nextID(), DB_common::getSequenceName(), + * DB_pgsql::createSequence(), DB_pgsql::dropSequence() + */ + function nextId($seq_name, $ondemand = true) + { + $seqname = $this->getSequenceName($seq_name); + $repeat = false; + do { + $this->pushErrorHandling(PEAR_ERROR_RETURN); + $result =& $this->query("SELECT NEXTVAL('${seqname}')"); + $this->popErrorHandling(); + if ($ondemand && DB::isError($result) && + $result->getCode() == DB_ERROR_NOSUCHTABLE) { + $repeat = true; + $this->pushErrorHandling(PEAR_ERROR_RETURN); + $result = $this->createSequence($seq_name); + $this->popErrorHandling(); + if (DB::isError($result)) { + return $this->raiseError($result); + } + } else { + $repeat = false; + } + } while ($repeat); + if (DB::isError($result)) { + return $this->raiseError($result); + } + $arr = $result->fetchRow(DB_FETCHMODE_ORDERED); + $result->free(); + return $arr[0]; + } + + // }}} + // {{{ createSequence() + + /** + * Creates a new sequence + * + * @param string $seq_name name of the new sequence + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @see DB_common::createSequence(), DB_common::getSequenceName(), + * DB_pgsql::nextID(), DB_pgsql::dropSequence() + */ + function createSequence($seq_name) + { + $seqname = $this->getSequenceName($seq_name); + $result = $this->query("CREATE SEQUENCE ${seqname}"); + return $result; + } + + // }}} + // {{{ dropSequence() + + /** + * Deletes a sequence + * + * @param string $seq_name name of the sequence to be deleted + * + * @return int DB_OK on success. A DB_Error object on failure. + * + * @see DB_common::dropSequence(), DB_common::getSequenceName(), + * DB_pgsql::nextID(), DB_pgsql::createSequence() + */ + function dropSequence($seq_name) + { + return $this->query('DROP SEQUENCE ' + . $this->getSequenceName($seq_name)); + } + + // }}} + // {{{ modifyLimitQuery() + + /** + * Adds LIMIT clauses to a query string according to current DBMS standards + * + * @param string $query the query to modify + * @param int $from the row to start to fetching (0 = the first row) + * @param int $count the numbers of rows to fetch + * @param mixed $params array, string or numeric data to be used in + * execution of the statement. Quantity of items + * passed must match quantity of placeholders in + * query: meaning 1 placeholder for non-array + * parameters or 1 placeholder per array element. + * + * @return string the query string with LIMIT clauses added + * + * @access protected + */ + function modifyLimitQuery($query, $from, $count, $params = array()) + { + return "$query LIMIT $count OFFSET $from"; + } + + // }}} + // {{{ pgsqlRaiseError() + + /** + * Produces a DB_Error object regarding the current problem + * + * @param int $errno if the error is being manually raised pass a + * DB_ERROR* constant here. If this isn't passed + * the error information gathered from the DBMS. + * + * @return object the DB_Error object + * + * @see DB_common::raiseError(), + * DB_pgsql::errorNative(), DB_pgsql::errorCode() + */ + function pgsqlRaiseError($errno = null) + { + $native = $this->errorNative(); + if ($errno === null) { + $errno = $this->errorCode($native); + } + return $this->raiseError($errno, null, null, null, $native); + } + + // }}} + // {{{ errorNative() + + /** + * Gets the DBMS' native error message produced by the last query + * + * {@internal Error messages are used instead of error codes + * in order to support older versions of PostgreSQL.}} + * + * @return string the DBMS' error message + */ + function errorNative() + { + return @pg_errormessage($this->connection); + } + + // }}} + // {{{ errorCode() + + /** + * Determines PEAR::DB error code from the database's text error message. + * + * @param string $errormsg error message returned from the database + * @return integer an error number from a DB error constant + */ + function errorCode($errormsg) + { + static $error_regexps; + if (!isset($error_regexps)) { + $error_regexps = array( + '/(relation|sequence|table).*does not exist|class .* not found/i' + => DB_ERROR_NOSUCHTABLE, + '/index .* does not exist/' + => DB_ERROR_NOT_FOUND, + '/column .* does not exist/i' + => DB_ERROR_NOSUCHFIELD, + '/relation .* already exists/i' + => DB_ERROR_ALREADY_EXISTS, + '/(divide|division) by zero$/i' + => DB_ERROR_DIVZERO, + '/pg_atoi: error in .*: can\'t parse /i' + => DB_ERROR_INVALID_NUMBER, + '/invalid input syntax for( type)? (integer|numeric)/i' + => DB_ERROR_INVALID_NUMBER, + '/value .* is out of range for type \w*int/i' + => DB_ERROR_INVALID_NUMBER, + '/integer out of range/i' + => DB_ERROR_INVALID_NUMBER, + '/value too long for type character/i' + => DB_ERROR_INVALID, + '/attribute .* not found|relation .* does not have attribute/i' + => DB_ERROR_NOSUCHFIELD, + '/column .* specified in USING clause does not exist in (left|right) table/i' + => DB_ERROR_NOSUCHFIELD, + '/parser: parse error at or near/i' + => DB_ERROR_SYNTAX, + '/syntax error at/' + => DB_ERROR_SYNTAX, + '/column reference .* is ambiguous/i' + => DB_ERROR_SYNTAX, + '/permission denied/' + => DB_ERROR_ACCESS_VIOLATION, + '/violates not-null constraint/' + => DB_ERROR_CONSTRAINT_NOT_NULL, + '/violates [\w ]+ constraint/' + => DB_ERROR_CONSTRAINT, + '/referential integrity violation/' + => DB_ERROR_CONSTRAINT, + '/more expressions than target columns/i' + => DB_ERROR_VALUE_COUNT_ON_ROW, + ); + } + foreach ($error_regexps as $regexp => $code) { + if (preg_match($regexp, $errormsg)) { + return $code; + } + } + // Fall back to DB_ERROR if there was no mapping. + return DB_ERROR; + } + + // }}} + // {{{ tableInfo() + + /** + * Returns information about a table or a result set + * + * NOTE: only supports 'table' and 'flags' if <var>$result</var> + * is a table name. + * + * @param object|string $result DB_result object from a query or a + * string containing the name of a table. + * While this also accepts a query result + * resource identifier, this behavior is + * deprecated. + * @param int $mode a valid tableInfo mode + * + * @return array an associative array with the information requested. + * A DB_Error object on failure. + * + * @see DB_common::tableInfo() + */ + function tableInfo($result, $mode = null) + { + if (is_string($result)) { + /* + * Probably received a table name. + * Create a result resource identifier. + */ + $id = @pg_exec($this->connection, "SELECT * FROM $result LIMIT 0"); + $got_string = true; + } elseif (isset($result->result)) { + /* + * Probably received a result object. + * Extract the result resource identifier. + */ + $id = $result->result; + $got_string = false; + } else { + /* + * Probably received a result resource identifier. + * Copy it. + * Deprecated. Here for compatibility only. + */ + $id = $result; + $got_string = false; + } + + if (!is_resource($id)) { + return $this->pgsqlRaiseError(DB_ERROR_NEED_MORE_DATA); + } + + if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { + $case_func = 'strtolower'; + } else { + $case_func = 'strval'; + } + + $count = @pg_numfields($id); + $res = array(); + + if ($mode) { + $res['num_fields'] = $count; + } + + for ($i = 0; $i < $count; $i++) { + $res[$i] = array( + 'table' => $got_string ? $case_func($result) : '', + 'name' => $case_func(@pg_fieldname($id, $i)), + 'type' => @pg_fieldtype($id, $i), + 'len' => @pg_fieldsize($id, $i), + 'flags' => $got_string + ? $this->_pgFieldFlags($id, $i, $result) + : '', + ); + if ($mode & DB_TABLEINFO_ORDER) { + $res['order'][$res[$i]['name']] = $i; + } + if ($mode & DB_TABLEINFO_ORDERTABLE) { + $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; + } + } + + // free the result only if we were called on a table + if ($got_string) { + @pg_freeresult($id); + } + return $res; + } + + // }}} + // {{{ _pgFieldFlags() + + /** + * Get a column's flags + * + * Supports "not_null", "default_value", "primary_key", "unique_key" + * and "multiple_key". The default value is passed through + * rawurlencode() in case there are spaces in it. + * + * @param int $resource the PostgreSQL result identifier + * @param int $num_field the field number + * + * @return string the flags + * + * @access private + */ + function _pgFieldFlags($resource, $num_field, $table_name) + { + $field_name = @pg_fieldname($resource, $num_field); + + $result = @pg_exec($this->connection, "SELECT f.attnotnull, f.atthasdef + FROM pg_attribute f, pg_class tab, pg_type typ + WHERE tab.relname = typ.typname + AND typ.typrelid = f.attrelid + AND f.attname = '$field_name' + AND tab.relname = '$table_name'"); + if (@pg_numrows($result) > 0) { + $row = @pg_fetch_row($result, 0); + $flags = ($row[0] == 't') ? 'not_null ' : ''; + + if ($row[1] == 't') { + $result = @pg_exec($this->connection, "SELECT a.adsrc + FROM pg_attribute f, pg_class tab, pg_type typ, pg_attrdef a + WHERE tab.relname = typ.typname AND typ.typrelid = f.attrelid + AND f.attrelid = a.adrelid AND f.attname = '$field_name' + AND tab.relname = '$table_name' AND f.attnum = a.adnum"); + $row = @pg_fetch_row($result, 0); + $num = preg_replace("/'(.*)'::\w+/", "\\1", $row[0]); + $flags .= 'default_' . rawurlencode($num) . ' '; + } + } else { + $flags = ''; + } + $result = @pg_exec($this->connection, "SELECT i.indisunique, i.indisprimary, i.indkey + FROM pg_attribute f, pg_class tab, pg_type typ, pg_index i + WHERE tab.relname = typ.typname + AND typ.typrelid = f.attrelid + AND f.attrelid = i.indrelid + AND f.attname = '$field_name' + AND tab.relname = '$table_name'"); + $count = @pg_numrows($result); + + for ($i = 0; $i < $count ; $i++) { + $row = @pg_fetch_row($result, $i); + $keys = explode(' ', $row[2]); + + if (in_array($num_field + 1, $keys)) { + $flags .= ($row[0] == 't' && $row[1] == 'f') ? 'unique_key ' : ''; + $flags .= ($row[1] == 't') ? 'primary_key ' : ''; + if (count($keys) > 1) + $flags .= 'multiple_key '; + } + } + + return trim($flags); + } + + // }}} + // {{{ getSpecialQuery() + + /** + * Obtains the query string needed for listing a given type of objects + * + * @param string $type the kind of objects you want to retrieve + * + * @return string the SQL query string or null if the driver doesn't + * support the object type requested + * + * @access protected + * @see DB_common::getListOf() + */ + function getSpecialQuery($type) + { + switch ($type) { + case 'tables': + return 'SELECT c.relname AS "Name"' + . ' FROM pg_class c, pg_user u' + . ' WHERE c.relowner = u.usesysid' + . " AND c.relkind = 'r'" + . ' AND NOT EXISTS' + . ' (SELECT 1 FROM pg_views' + . ' WHERE viewname = c.relname)' + . " AND c.relname !~ '^(pg_|sql_)'" + . ' UNION' + . ' SELECT c.relname AS "Name"' + . ' FROM pg_class c' + . " WHERE c.relkind = 'r'" + . ' AND NOT EXISTS' + . ' (SELECT 1 FROM pg_views' + . ' WHERE viewname = c.relname)' + . ' AND NOT EXISTS' + . ' (SELECT 1 FROM pg_user' + . ' WHERE usesysid = c.relowner)' + . " AND c.relname !~ '^pg_'"; + case 'schema.tables': + return "SELECT schemaname || '.' || tablename" + . ' AS "Name"' + . ' FROM pg_catalog.pg_tables' + . ' WHERE schemaname NOT IN' + . " ('pg_catalog', 'information_schema', 'pg_toast')"; + case 'views': + // Table cols: viewname | viewowner | definition + return 'SELECT viewname from pg_views WHERE schemaname' + . " NOT IN ('information_schema', 'pg_catalog')"; + case 'users': + // cols: usename |usesysid|usecreatedb|usetrace|usesuper|usecatupd|passwd |valuntil + return 'SELECT usename FROM pg_user'; + case 'databases': + return 'SELECT datname FROM pg_database'; + case 'functions': + case 'procedures': + return 'SELECT proname FROM pg_proc WHERE proowner <> 1'; + default: + return null; + } + } + + // }}} + +} + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * End: + */ + +?> diff --git a/lib/phpFlickr/PEAR/DB/storage.php b/lib/phpFlickr/PEAR/DB/storage.php new file mode 100644 index 000000000..f597b36d7 --- /dev/null +++ b/lib/phpFlickr/PEAR/DB/storage.php @@ -0,0 +1,504 @@ +<?php + +/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ + +/** + * Provides an object interface to a table row + * + * PHP versions 4 and 5 + * + * LICENSE: This source file is subject to version 3.0 of the PHP license + * that is available through the world-wide-web at the following URI: + * http://www.php.net/license/3_0.txt. If you did not receive a copy of + * the PHP License and are unable to obtain it through the web, please + * send a note to license@php.net so we can mail you a copy immediately. + * + * @category Database + * @package DB + * @author Stig Bakken <stig@php.net> + * @copyright 1997-2005 The PHP Group + * @license http://www.php.net/license/3_0.txt PHP License 3.0 + * @version CVS: $Id: storage.php 32 2005-08-01 06:21:02Z dancoulter $ + * @link http://pear.php.net/package/DB + */ + +/** + * Obtain the DB class so it can be extended from + */ +require_once 'DB.php'; + +/** + * Provides an object interface to a table row + * + * It lets you add, delete and change rows using objects rather than SQL + * statements. + * + * @category Database + * @package DB + * @author Stig Bakken <stig@php.net> + * @copyright 1997-2005 The PHP Group + * @license http://www.php.net/license/3_0.txt PHP License 3.0 + * @version Release: @package_version@ + * @link http://pear.php.net/package/DB + */ +class DB_storage extends PEAR +{ + // {{{ properties + + /** the name of the table (or view, if the backend database supports + updates in views) we hold data from */ + var $_table = null; + + /** which column(s) in the table contains primary keys, can be a + string for single-column primary keys, or an array of strings + for multiple-column primary keys */ + var $_keycolumn = null; + + /** DB connection handle used for all transactions */ + var $_dbh = null; + + /** an assoc with the names of database fields stored as properties + in this object */ + var $_properties = array(); + + /** an assoc with the names of the properties in this object that + have been changed since they were fetched from the database */ + var $_changes = array(); + + /** flag that decides if data in this object can be changed. + objects that don't have their table's key column in their + property lists will be flagged as read-only. */ + var $_readonly = false; + + /** function or method that implements a validator for fields that + are set, this validator function returns true if the field is + valid, false if not */ + var $_validator = null; + + // }}} + // {{{ constructor + + /** + * Constructor + * + * @param $table string the name of the database table + * + * @param $keycolumn mixed string with name of key column, or array of + * strings if the table has a primary key of more than one column + * + * @param $dbh object database connection object + * + * @param $validator mixed function or method used to validate + * each new value, called with three parameters: the name of the + * field/column that is changing, a reference to the new value and + * a reference to this object + * + */ + function DB_storage($table, $keycolumn, &$dbh, $validator = null) + { + $this->PEAR('DB_Error'); + $this->_table = $table; + $this->_keycolumn = $keycolumn; + $this->_dbh = $dbh; + $this->_readonly = false; + $this->_validator = $validator; + } + + // }}} + // {{{ _makeWhere() + + /** + * Utility method to build a "WHERE" clause to locate ourselves in + * the table. + * + * XXX future improvement: use rowids? + * + * @access private + */ + function _makeWhere($keyval = null) + { + if (is_array($this->_keycolumn)) { + if ($keyval === null) { + for ($i = 0; $i < sizeof($this->_keycolumn); $i++) { + $keyval[] = $this->{$this->_keycolumn[$i]}; + } + } + $whereclause = ''; + for ($i = 0; $i < sizeof($this->_keycolumn); $i++) { + if ($i > 0) { + $whereclause .= ' AND '; + } + $whereclause .= $this->_keycolumn[$i]; + if (is_null($keyval[$i])) { + // there's not much point in having a NULL key, + // but we support it anyway + $whereclause .= ' IS NULL'; + } else { + $whereclause .= ' = ' . $this->_dbh->quote($keyval[$i]); + } + } + } else { + if ($keyval === null) { + $keyval = @$this->{$this->_keycolumn}; + } + $whereclause = $this->_keycolumn; + if (is_null($keyval)) { + // there's not much point in having a NULL key, + // but we support it anyway + $whereclause .= ' IS NULL'; + } else { + $whereclause .= ' = ' . $this->_dbh->quote($keyval); + } + } + return $whereclause; + } + + // }}} + // {{{ setup() + + /** + * Method used to initialize a DB_storage object from the + * configured table. + * + * @param $keyval mixed the key[s] of the row to fetch (string or array) + * + * @return int DB_OK on success, a DB error if not + */ + function setup($keyval) + { + $whereclause = $this->_makeWhere($keyval); + $query = 'SELECT * FROM ' . $this->_table . ' WHERE ' . $whereclause; + $sth = $this->_dbh->query($query); + if (DB::isError($sth)) { + return $sth; + } + $row = $sth->fetchRow(DB_FETCHMODE_ASSOC); + if (DB::isError($row)) { + return $row; + } + if (!$row) { + return $this->raiseError(null, DB_ERROR_NOT_FOUND, null, null, + $query, null, true); + } + foreach ($row as $key => $value) { + $this->_properties[$key] = true; + $this->$key = $value; + } + return DB_OK; + } + + // }}} + // {{{ insert() + + /** + * Create a new (empty) row in the configured table for this + * object. + */ + function insert($newpk) + { + if (is_array($this->_keycolumn)) { + $primarykey = $this->_keycolumn; + } else { + $primarykey = array($this->_keycolumn); + } + settype($newpk, "array"); + for ($i = 0; $i < sizeof($primarykey); $i++) { + $pkvals[] = $this->_dbh->quote($newpk[$i]); + } + + $sth = $this->_dbh->query("INSERT INTO $this->_table (" . + implode(",", $primarykey) . ") VALUES(" . + implode(",", $pkvals) . ")"); + if (DB::isError($sth)) { + return $sth; + } + if (sizeof($newpk) == 1) { + $newpk = $newpk[0]; + } + $this->setup($newpk); + } + + // }}} + // {{{ toString() + + /** + * Output a simple description of this DB_storage object. + * @return string object description + */ + function toString() + { + $info = strtolower(get_class($this)); + $info .= " (table="; + $info .= $this->_table; + $info .= ", keycolumn="; + if (is_array($this->_keycolumn)) { + $info .= "(" . implode(",", $this->_keycolumn) . ")"; + } else { + $info .= $this->_keycolumn; + } + $info .= ", dbh="; + if (is_object($this->_dbh)) { + $info .= $this->_dbh->toString(); + } else { + $info .= "null"; + } + $info .= ")"; + if (sizeof($this->_properties)) { + $info .= " [loaded, key="; + $keyname = $this->_keycolumn; + if (is_array($keyname)) { + $info .= "("; + for ($i = 0; $i < sizeof($keyname); $i++) { + if ($i > 0) { + $info .= ","; + } + $info .= $this->$keyname[$i]; + } + $info .= ")"; + } else { + $info .= $this->$keyname; + } + $info .= "]"; + } + if (sizeof($this->_changes)) { + $info .= " [modified]"; + } + return $info; + } + + // }}} + // {{{ dump() + + /** + * Dump the contents of this object to "standard output". + */ + function dump() + { + foreach ($this->_properties as $prop => $foo) { + print "$prop = "; + print htmlentities($this->$prop); + print "<br />\n"; + } + } + + // }}} + // {{{ &create() + + /** + * Static method used to create new DB storage objects. + * @param $data assoc. array where the keys are the names + * of properties/columns + * @return object a new instance of DB_storage or a subclass of it + */ + function &create($table, &$data) + { + $classname = strtolower(get_class($this)); + $obj =& new $classname($table); + foreach ($data as $name => $value) { + $obj->_properties[$name] = true; + $obj->$name = &$value; + } + return $obj; + } + + // }}} + // {{{ loadFromQuery() + + /** + * Loads data into this object from the given query. If this + * object already contains table data, changes will be saved and + * the object re-initialized first. + * + * @param $query SQL query + * + * @param $params parameter list in case you want to use + * prepare/execute mode + * + * @return int DB_OK on success, DB_WARNING_READ_ONLY if the + * returned object is read-only (because the object's specified + * key column was not found among the columns returned by $query), + * or another DB error code in case of errors. + */ +// XXX commented out for now +/* + function loadFromQuery($query, $params = null) + { + if (sizeof($this->_properties)) { + if (sizeof($this->_changes)) { + $this->store(); + $this->_changes = array(); + } + $this->_properties = array(); + } + $rowdata = $this->_dbh->getRow($query, DB_FETCHMODE_ASSOC, $params); + if (DB::isError($rowdata)) { + return $rowdata; + } + reset($rowdata); + $found_keycolumn = false; + while (list($key, $value) = each($rowdata)) { + if ($key == $this->_keycolumn) { + $found_keycolumn = true; + } + $this->_properties[$key] = true; + $this->$key = &$value; + unset($value); // have to unset, or all properties will + // refer to the same value + } + if (!$found_keycolumn) { + $this->_readonly = true; + return DB_WARNING_READ_ONLY; + } + return DB_OK; + } + */ + + // }}} + // {{{ set() + + /** + * Modify an attriute value. + */ + function set($property, $newvalue) + { + // only change if $property is known and object is not + // read-only + if ($this->_readonly) { + return $this->raiseError(null, DB_WARNING_READ_ONLY, null, + null, null, null, true); + } + if (@isset($this->_properties[$property])) { + if (empty($this->_validator)) { + $valid = true; + } else { + $valid = @call_user_func($this->_validator, + $this->_table, + $property, + $newvalue, + $this->$property, + $this); + } + if ($valid) { + $this->$property = $newvalue; + if (empty($this->_changes[$property])) { + $this->_changes[$property] = 0; + } else { + $this->_changes[$property]++; + } + } else { + return $this->raiseError(null, DB_ERROR_INVALID, null, + null, "invalid field: $property", + null, true); + } + return true; + } + return $this->raiseError(null, DB_ERROR_NOSUCHFIELD, null, + null, "unknown field: $property", + null, true); + } + + // }}} + // {{{ &get() + + /** + * Fetch an attribute value. + * + * @param string attribute name + * + * @return attribute contents, or null if the attribute name is + * unknown + */ + function &get($property) + { + // only return if $property is known + if (isset($this->_properties[$property])) { + return $this->$property; + } + $tmp = null; + return $tmp; + } + + // }}} + // {{{ _DB_storage() + + /** + * Destructor, calls DB_storage::store() if there are changes + * that are to be kept. + */ + function _DB_storage() + { + if (sizeof($this->_changes)) { + $this->store(); + } + $this->_properties = array(); + $this->_changes = array(); + $this->_table = null; + } + + // }}} + // {{{ store() + + /** + * Stores changes to this object in the database. + * + * @return DB_OK or a DB error + */ + function store() + { + foreach ($this->_changes as $name => $foo) { + $params[] = &$this->$name; + $vars[] = $name . ' = ?'; + } + if ($vars) { + $query = 'UPDATE ' . $this->_table . ' SET ' . + implode(', ', $vars) . ' WHERE ' . + $this->_makeWhere(); + $stmt = $this->_dbh->prepare($query); + $res = $this->_dbh->execute($stmt, $params); + if (DB::isError($res)) { + return $res; + } + $this->_changes = array(); + } + return DB_OK; + } + + // }}} + // {{{ remove() + + /** + * Remove the row represented by this object from the database. + * + * @return mixed DB_OK or a DB error + */ + function remove() + { + if ($this->_readonly) { + return $this->raiseError(null, DB_WARNING_READ_ONLY, null, + null, null, null, true); + } + $query = 'DELETE FROM ' . $this->_table .' WHERE '. + $this->_makeWhere(); + $res = $this->_dbh->query($query); + if (DB::isError($res)) { + return $res; + } + foreach ($this->_properties as $prop => $foo) { + unset($this->$prop); + } + $this->_properties = array(); + $this->_changes = array(); + return DB_OK; + } + + // }}} +} + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * End: + */ + +?> |