diff options
| author | ewinslow <ewinslow@36083f99-b078-4883-b0ff-0f9b5a30f544> | 2010-09-15 19:31:39 +0000 |
|---|---|---|
| committer | ewinslow <ewinslow@36083f99-b078-4883-b0ff-0f9b5a30f544> | 2010-09-15 19:31:39 +0000 |
| commit | f809e76743a6ccab2badf69633bb6132c1358f2e (patch) | |
| tree | 3ceb4064ab919406671f5a10b201b5e9a8972ccf /engine/classes | |
| parent | 3d7c1441ea3ba018f2bb68be986d08d15aea6374 (diff) | |
| download | elgg-f809e76743a6ccab2badf69633bb6132c1358f2e.tar.gz elgg-f809e76743a6ccab2badf69633bb6132c1358f2e.tar.bz2 | |
Refs #2220: Pulled remaining classes out of lib files. Core classes now autoloaded via __autoload().
git-svn-id: http://code.elgg.org/elgg/trunk@6941 36083f99-b078-4883-b0ff-0f9b5a30f544
Diffstat (limited to 'engine/classes')
34 files changed, 1036 insertions, 0 deletions
diff --git a/engine/classes/APIException.php b/engine/classes/APIException.php new file mode 100644 index 000000000..d6eb9ce52 --- /dev/null +++ b/engine/classes/APIException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * APIException
+ * The API Exception class, thrown by the API layer when an API call has an issue.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class APIException extends Exception {}
diff --git a/engine/classes/AccessControlQueryComponent.php b/engine/classes/AccessControlQueryComponent.php new file mode 100644 index 000000000..ad5410ddc --- /dev/null +++ b/engine/classes/AccessControlQueryComponent.php @@ -0,0 +1,40 @@ +<?php
+/**
+ * @class AccessControlQueryComponent
+ * Access control component.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class AccessControlQueryComponent extends QueryComponent
+{
+ /**
+ * Construct the ACL.
+ *
+ * @param string $acl_table The table where the access control field is.
+ * @param string $acl_field The field containing the access control.
+ * @param string $object_owner_table The table containing the owner information for the stuff you're retrieving.
+ * @param string $object_owner_id_field The field in $object_owner_table containing the owner information
+ */
+ function __construct($acl_table = "entities", $acl_field = "access_id", $object_owner_table = "entities", $object_owner_id_field = "owner_guid")
+ {
+ global $CONFIG;
+
+ $this->acl_table = $CONFIG->dbprefix . sanitise_string($acl_table);
+ $this->acl_field = sanitise_string($acl_field);
+ $this->object_owner_table = $CONFIG->dbprefix . sanitise_string($object_owner_table);
+ $this->object_owner_id_field = sanitise_string($object_owner_id_field);
+ }
+
+ function __toString()
+ {
+ //$access = get_access_list();
+ // KJ - changed to use get_access_sql_suffix
+ // Note: currently get_access_sql_suffix is hardwired to use
+ // $acl_field = "access_id", $object_owner_table = $acl_table, and
+ // $object_owner_id_field = "owner_guid"
+ // @todo recode get_access_sql_suffix to make it possible to specify alternate field names
+ return "and ".get_access_sql_suffix($this->acl_table); // Add access controls
+
+ //return "and ({$this->acl_table}.{$this->acl_field} in {$access} or ({$this->acl_table}.{$this->acl_field} = 0 and {$this->object_owner_table}.{$this->object_owner_id_field} = {$_SESSION['id']}))";
+ }
+}
diff --git a/engine/classes/CallException.php b/engine/classes/CallException.php new file mode 100644 index 000000000..369ce19bd --- /dev/null +++ b/engine/classes/CallException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * CallException
+ * An exception thrown when there is a problem calling something.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class CallException extends Exception {}
diff --git a/engine/classes/ClassException.php b/engine/classes/ClassException.php new file mode 100644 index 000000000..6dfb57b0e --- /dev/null +++ b/engine/classes/ClassException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * ClassException
+ * A class Exception, throw when there is a class error.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class ClassException extends Exception {}
diff --git a/engine/classes/ClassNotFoundException.php b/engine/classes/ClassNotFoundException.php new file mode 100644 index 000000000..f344e6b28 --- /dev/null +++ b/engine/classes/ClassNotFoundException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * ClassNotFoundException
+ * An Class not found Exception, throw when an class can not be found occurs.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class ClassNotFoundException extends ClassException {}
\ No newline at end of file diff --git a/engine/classes/ConfigurationException.php b/engine/classes/ConfigurationException.php new file mode 100644 index 000000000..a3c7c38cc --- /dev/null +++ b/engine/classes/ConfigurationException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * ConfigurationException
+ * There is a configuration error
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class ConfigurationException extends Exception {}
diff --git a/engine/classes/DataFormatException.php b/engine/classes/DataFormatException.php new file mode 100644 index 000000000..2038f1fb7 --- /dev/null +++ b/engine/classes/DataFormatException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * Data format exception
+ * An exception thrown when there is a problem in the format of some data.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class DataFormatException extends Exception {}
diff --git a/engine/classes/DatabaseException.php b/engine/classes/DatabaseException.php new file mode 100644 index 000000000..ffc414abf --- /dev/null +++ b/engine/classes/DatabaseException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * DatabaseException
+ * An database exception, throw when a database exception happens, subclass if more detail is needed.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class DatabaseException extends Exception {}
diff --git a/engine/classes/DeleteQueryTypeQueryComponent.php b/engine/classes/DeleteQueryTypeQueryComponent.php new file mode 100644 index 000000000..645e95cb5 --- /dev/null +++ b/engine/classes/DeleteQueryTypeQueryComponent.php @@ -0,0 +1,14 @@ +<?php
+/**
+ * @class DeleteQueryTypeQueryComponent
+ * A delete query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class DeleteQueryTypeQueryComponent extends QueryTypeQueryComponent
+{
+ function __construct()
+ {
+ $this->query_type = "DELETE FROM";
+ }
+}
diff --git a/engine/classes/IOException.php b/engine/classes/IOException.php new file mode 100644 index 000000000..683be32a1 --- /dev/null +++ b/engine/classes/IOException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * IOException
+ * An IO Exception, throw when an IO Exception occurs. Subclass for specific IO Exceptions.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class IOException extends Exception {}
diff --git a/engine/classes/InsertQueryTypeQueryComponent.php b/engine/classes/InsertQueryTypeQueryComponent.php new file mode 100644 index 000000000..20d1a7adf --- /dev/null +++ b/engine/classes/InsertQueryTypeQueryComponent.php @@ -0,0 +1,14 @@ +<?php
+/**
+ * @class InsertQueryTypeQueryComponent
+ * An insert query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class InsertQueryTypeQueryComponent extends QueryTypeQueryComponent
+{
+ function __construct()
+ {
+ $this->query_type = "INSERT INTO";
+ }
+}
diff --git a/engine/classes/InstallationException.php b/engine/classes/InstallationException.php new file mode 100644 index 000000000..96bd9beff --- /dev/null +++ b/engine/classes/InstallationException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * InstallationException
+ * Thrown when there is a major problem with the installation.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class InstallationException extends ConfigurationException {}
diff --git a/engine/classes/InvalidClassException.php b/engine/classes/InvalidClassException.php new file mode 100644 index 000000000..84d3b3625 --- /dev/null +++ b/engine/classes/InvalidClassException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * InvalidClassException
+ * An invalid class Exception, throw when a class is invalid.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class InvalidClassException extends ClassException {}
diff --git a/engine/classes/InvalidParameterException.php b/engine/classes/InvalidParameterException.php new file mode 100644 index 000000000..a94904da0 --- /dev/null +++ b/engine/classes/InvalidParameterException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * InvalidParameterException
+ * A parameter is invalid.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class InvalidParameterException extends CallException {}
diff --git a/engine/classes/JoinQueryComponent.php b/engine/classes/JoinQueryComponent.php new file mode 100644 index 000000000..8300cf710 --- /dev/null +++ b/engine/classes/JoinQueryComponent.php @@ -0,0 +1,33 @@ +<?php
+/**
+ * @class JoinQueryComponent Join query.
+ * Represents a join query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class JoinQueryComponent extends QueryComponent
+{
+ /**
+ * Construct a join query.
+ * @param string $table Table one to join...
+ * @param string $field Field 1 with...
+ * @param string $table2 Table 2 ...
+ * @param string $field2 Field...
+ * @param string $operator Using this operator
+ */
+ function __construct($table1, $field1, $table2, $field2, $operator = "=")
+ {
+ global $CONFIG;
+
+ $this->table1 = $CONFIG->dbprefix . sanitise_string($table1);
+ $this->field1 = sanitise_string($field1);
+ $this->table2 = $CONFIG->dbprefix . sanitise_string($table2);
+ $this->field2 = sanitise_string($field2);
+ $this->operator = sanitise_string($operator);
+ }
+
+ function __toString()
+ {
+ return "join {$this->table2} on {$this->$table}.{$this->$field} {$this->$operator} {$this->$table2}.{$this->$field2}";
+ }
+}
diff --git a/engine/classes/LimitOffsetQueryComponent.php b/engine/classes/LimitOffsetQueryComponent.php new file mode 100644 index 000000000..2cc77dd47 --- /dev/null +++ b/engine/classes/LimitOffsetQueryComponent.php @@ -0,0 +1,26 @@ +<?php
+/**
+ * @class LimitOffsetQueryComponent
+ * Limit and offset clauses of a query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class LimitOffsetQueryComponent extends QueryComponent
+{
+ /**
+ * Specify a limit and an offset.
+ *
+ * @param int $limit The limit.
+ * @param int $offset The offset.
+ */
+ function __construct($limit = 25, $offset = 0)
+ {
+ $this->limit = (int)$limit;
+ $this->offset = (int)$offset;
+ }
+
+ function __toString()
+ {
+ return "limit {$this->offset}, {$this->limit}";
+ }
+}
diff --git a/engine/classes/NotImplementedException.php b/engine/classes/NotImplementedException.php new file mode 100644 index 000000000..f95c88c47 --- /dev/null +++ b/engine/classes/NotImplementedException.php @@ -0,0 +1,11 @@ +<?php
+/**
+ * NotImplementedException
+ * Thrown when a method or function has not been implemented, primarily used in development... you should
+ * not see these!
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class NotImplementedException extends CallException {}
diff --git a/engine/classes/NotificationException.php b/engine/classes/NotificationException.php new file mode 100644 index 000000000..78ea4c57e --- /dev/null +++ b/engine/classes/NotificationException.php @@ -0,0 +1,6 @@ +<?php
+/**
+ * Notification exception.
+ * @author Curverider Ltd
+ */
+class NotificationException extends Exception {}
diff --git a/engine/classes/OrderQueryComponent.php b/engine/classes/OrderQueryComponent.php new file mode 100644 index 000000000..04bb309c9 --- /dev/null +++ b/engine/classes/OrderQueryComponent.php @@ -0,0 +1,23 @@ +<?php
+/**
+ * @class OrderQueryComponent
+ * Order the query results.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class OrderQueryComponent extends QueryComponent
+{
+ function __construct($table, $field, $order = "asc")
+ {
+ global $CONFIG;
+
+ $this->table = $CONFIG->dbprefix . sanitise_string($table);
+ $this->field = sanitise_string($field);
+ $this->order = sanitise_string($order);
+ }
+
+ function __toString()
+ {
+ return "order by {$this->table}.{$this->field} {$this->order}";
+ }
+}
diff --git a/engine/classes/PluginException.php b/engine/classes/PluginException.php new file mode 100644 index 000000000..4da15791d --- /dev/null +++ b/engine/classes/PluginException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * PluginException
+ *
+ * A plugin Exception, thrown when an Exception occurs relating to the plugin mechanism. Subclass for specific plugin Exceptions.
+ *
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class PluginException extends Exception {}
\ No newline at end of file diff --git a/engine/classes/Query.php b/engine/classes/Query.php new file mode 100644 index 000000000..ebc7e1474 --- /dev/null +++ b/engine/classes/Query.php @@ -0,0 +1,286 @@ +<?php
+/**
+ * @class Query Provides a framework to construct complex queries in a safer environment.
+ *
+ * The usage of this class depends on the type of query you are executing, but the basic idea is to
+ * construct a query out of pluggable classes.
+ *
+ * Once constructed SQL can be generated using the toString method, this should happen automatically
+ * if you pass the Query object to get_data or similar.
+ *
+ * To construct a query, create a new Query() object and begin populating it with the various classes
+ * that define the various aspects of the query.
+ *
+ * Notes:
+ * - You do not have to specify things in any particular order, provided you specify all required
+ * components.
+ * - With database tables you do not have to specify your db prefix, this will be added automatically.
+ * - When constructing your query keep an eye on the error log - any problems will get spit out here.
+ * Note also that __toString won't let you throw Exceptions (!!!) so these are caught and echoed to
+ * the log instead.
+ *
+ * Here is an example of a select query which requests some data out of the entities table with an
+ * order and limit that uses a subset where and some normal where queries:
+ *
+ * <blockquote>
+ * // Construct the query
+ * $query = new Query();
+ *
+ * // Say which table we're interested in
+ * $query->addTable(new TableQueryComponent("entities"));
+ *
+ * // What fields are we interested in
+ * $query->addSelectField(new SelectFieldQueryComponent("entities","*"));
+ *
+ * // Add access control (Default access control uses default fields on entities table.
+ * // Note that it will error without something specified here!
+ * $query->setAccessControl(new AccessControlQueryComponent());
+ *
+ * // Set a limit and offset, may be omitted.
+ * $query->setLimitAndOffset(new LimitOffsetQueryComponent(10,0));
+ *
+ * // Specify the order, may be omitted
+ * $query->setOrder(new OrderQueryComponent("entities", "subtype", "desc"));
+ *
+ * // Construct a where query
+ * //
+ * // This demonstrates a WhereSet which lets you have sub wheres, a
+ * // WhereStatic which lets you compare a table field against a value and a
+ * // Where which lets you compare a table/field with another table/field.
+ * $query->addWhere(
+ * new WhereSetQueryComponent(
+ * array(
+ * new WhereStaticQueryComponent("entities", "subtype","=", 1),
+ * new WhereQueryComponent("entities","subtype","=", "entities", "subtype")
+ * )
+ * )
+ * );
+ *
+ * get_data($query);
+ * </blockquote>
+ *
+ * @author Curverider Ltd
+ */
+class Query
+{
+
+ /// The limit of the query
+ private $limit_and_offset;
+
+ /// Fields to return on a query
+ private $fields;
+
+ /// Tables to use in a from query
+ private $tables;
+
+ /// Join tables
+ private $joins;
+
+ /// Set values
+ private $sets;
+
+ /// Where query
+ private $where;
+
+ /// Order by
+ private $order;
+
+ /// The query type
+ private $query_type;
+
+ /// ACL
+ private $access_control;
+
+ /**
+ * Construct query & initialise variables
+ */
+ function __construct()
+ {
+ $this->fields = array();
+ $this->tables = array();
+ $this->joins = array();
+ $this->where = array();
+ $this->sets = array();
+
+ $this->setQueryType(new SelectQueryTypeQueryComponent());
+ }
+
+ /**
+ * Add limits and offsets to the query.
+ *
+ * @param LimitOffsetQueryComponent $component The limit and offset.
+ */
+ public function setLimitAndOffset(LimitOffsetQueryComponent $component) { $this->limit_and_offset = $component; }
+
+ /**
+ * Reset and set the field to the select statement.
+ *
+ * @param SelectFieldQueryComponent $component Table and field component.
+ */
+ public function setSelectField(SelectFieldQueryComponent $component)
+ {
+ $this->fields = array();
+ return $this->addSelectField($component);
+ }
+
+ /**
+ * Add a select field.
+ *
+ * @param SelectFieldQueryComponent $component Add a component.
+ */
+ public function addSelectField(SelectFieldQueryComponent $component) { $this->fields[] = $component; }
+
+ /**
+ * Add a join to the component.
+ *
+ * @param JoinQueryComponent $component The join.
+ */
+ public function addJoin(JoinQueryComponent $component) { $this->joins[] = $component; }
+
+ /**
+ * Set a field value in an update or insert statement.
+ *
+ * @param SetQueryComponent $component Fields to set.
+ */
+ public function addSet(SetQueryComponent $component) { $this->sets[] = $component; }
+
+ /**
+ * Set the query type, i.e. "select", "update", "insert" & "delete".
+ *
+ * @param QueryTypeQueryComponent $component The query type.
+ */
+ public function setQueryType(QueryTypeQueryComponent $component) { $this->query_type = $component; }
+
+ /**
+ * Attach an order component.
+ *
+ * @param OrderQueryComponent $component The order component.
+ */
+ public function setOrder(OrderQueryComponent $component) { $this->order = $component; }
+
+ /**
+ * Add a table to the query.
+ *
+ * @param TableQueryComponent $component Table to add.
+ */
+ public function addTable(TableQueryComponent $component) { $this->tables[] = $component; }
+
+ /**
+ * Add a where clause to the query.
+ *
+ * @param WhereQueryComponent $component The where component
+ */
+ public function addWhere(WhereQueryComponent $component) { $this->where[] = $component; }
+
+ /**
+ * Set access control.
+ *
+ * @param AccessControlQueryComponent $component Access control.
+ */
+ public function setAccessControl(AccessControlQueryComponent $component) { $this->access_control = $component; }
+
+ public function __toString()
+ {
+ global $CONFIG;
+
+ $sql = "";
+
+ try
+ {
+ // Query prefix & fields
+ if (!empty($this->query_type))
+ {
+ $sql .= "{$this->query_type} ";
+
+ if (!empty($this->fields))
+ {
+ $fields = "";
+
+ foreach ($this->fields as $field)
+ $fields .= "$field";
+
+ $sql .= " $fields from ";
+ }
+ else
+ throw new DatabaseException(elgg_echo('DatabaseException:SelectFieldsMissing'));
+ }
+ else
+ throw new DatabaseException(elgg_echo('DatabaseException:UnspecifiedQueryType'));
+
+ // Tables
+ if (!empty($this->tables))
+ {
+ foreach($this->tables as $table)
+ $sql .= "$table, ";
+
+ $sql = trim($sql, ", ");
+ }
+ else
+ throw new DatabaseException(elgg_echo('DatabaseException:NoTablesSpecified'));
+
+ // Joins on select queries
+ if ($this->query_type->query_type == 'select')
+ {
+ if (!empty($this->joins))
+ {
+ foreach($this->joins as $join)
+ $sql .= "$join ";
+ }
+ }
+
+ // Setting values
+ if (
+ ($this->query_type->query_type == 'update') ||
+ ($this->query_type->query_type == 'insert')
+ )
+ {
+ $sql .= "set ";
+
+ foreach ($this->sets as $set)
+ $sql .= "$set, ";
+
+ $sql = trim($sql, ", ") . " ";
+ }
+
+ // Where
+ if (!empty($this->where))
+ {
+ $sql .= " where 1 ";
+
+ foreach ($this->where as $where)
+ $sql .= "$where ";
+ }
+
+ // Access control
+ if (!empty($this->access_control))
+ {
+
+ // Catch missing Where
+ if (empty($this->where))
+ $sql .= " where 1 ";
+
+ $sql .= "{$this->access_control} ";
+ }
+ else
+ throw new DatabaseException(elgg_echo('DatabaseException:NoACL'));
+
+ // Order by
+ if (!empty($this->order))
+ $sql .= "{$this->order} ";
+
+ // Limits
+ if (!empty($this->limit_and_offset))
+ $sql .= "{$this->limit_and_offset} ";
+
+
+
+ } catch (Exception $e) {
+ trigger_error($e, E_USER_WARNING);
+ }
+
+
+ return $sql;
+ }
+
+}
+
diff --git a/engine/classes/QueryComponent.php b/engine/classes/QueryComponent.php new file mode 100644 index 000000000..cfe7683b1 --- /dev/null +++ b/engine/classes/QueryComponent.php @@ -0,0 +1,42 @@ +<?php
+/**
+ * @class QueryComponent Query component superclass.
+ * Component of a query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+abstract class QueryComponent
+{
+ /**
+ * Associative array of fields and values
+ */
+ private $fields;
+
+ function __construct()
+ {
+ $this->fields = array();
+ }
+
+ /**
+ * Class member get overloading
+ *
+ * @param string $name
+ * @return mixed
+ */
+ function __get($name) {
+ return $this->fields[$name];
+ }
+
+ /**
+ * Class member set overloading
+ *
+ * @param string $name
+ * @param mixed $value
+ * @return void
+ */
+ function __set($name, $value) {
+ $this->fields[$name] = $value;
+
+ return true;
+ }
+}
diff --git a/engine/classes/QueryTypeQueryComponent.php b/engine/classes/QueryTypeQueryComponent.php new file mode 100644 index 000000000..231faa733 --- /dev/null +++ b/engine/classes/QueryTypeQueryComponent.php @@ -0,0 +1,14 @@ +<?php
+/**
+ * @class QueryTypeQueryComponent
+ * What type of query is this?
+ * @author Curverider Ltd
+ * @see Query
+ */
+abstract class QueryTypeQueryComponent extends QueryComponent
+{
+ function __toString()
+ {
+ return $this->query_type;
+ }
+}
diff --git a/engine/classes/RegistrationException.php b/engine/classes/RegistrationException.php new file mode 100644 index 000000000..5efea3904 --- /dev/null +++ b/engine/classes/RegistrationException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * RegistrationException
+ * Could not register a new user for whatever reason.
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class RegistrationException extends InstallationException {}
\ No newline at end of file diff --git a/engine/classes/SecurityException.php b/engine/classes/SecurityException.php new file mode 100644 index 000000000..3075f0b8e --- /dev/null +++ b/engine/classes/SecurityException.php @@ -0,0 +1,10 @@ +<?php
+/**
+ * SecurityException
+ * An Security Exception, throw when a Security Exception occurs. Subclass for specific Security Execeptions (access problems etc)
+ *
+ * @author Curverider Ltd <info@elgg.com>
+ * @package Elgg
+ * @subpackage Exceptions
+ */
+class SecurityException extends Exception {}
diff --git a/engine/classes/SelectFieldQueryComponent.php b/engine/classes/SelectFieldQueryComponent.php new file mode 100644 index 000000000..fbc4a81c1 --- /dev/null +++ b/engine/classes/SelectFieldQueryComponent.php @@ -0,0 +1,28 @@ +<?php
+/**
+ * @class SelectFieldQueryComponent Class representing a select field.
+ * This class represents a select field component.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class SelectFieldQueryComponent extends QueryComponent
+{
+ /**
+ * Construct a select field component
+ *
+ * @param string $table The table containing the field.
+ * @param string $field The field or "*"
+ */
+ function __construct($table, $field)
+ {
+ global $CONFIG;
+
+ $this->table = $CONFIG->dbprefix . sanitise_string($table);
+ $this->field = sanitise_string($field);
+ }
+
+ function __toString()
+ {
+ return "{$this->table}.{$this->field}";
+ }
+}
diff --git a/engine/classes/SelectQueryTypeQueryComponent.php b/engine/classes/SelectQueryTypeQueryComponent.php new file mode 100644 index 000000000..61e7e5017 --- /dev/null +++ b/engine/classes/SelectQueryTypeQueryComponent.php @@ -0,0 +1,14 @@ +<?php
+/**
+ * @class SelectQueryTypeQueryComponent
+ * A select query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class SelectQueryTypeQueryComponent extends QueryTypeQueryComponent
+{
+ function __construct()
+ {
+ $this->query_type = "SELECT";
+ }
+}
diff --git a/engine/classes/SetQueryComponent.php b/engine/classes/SetQueryComponent.php new file mode 100644 index 000000000..0acd5718c --- /dev/null +++ b/engine/classes/SetQueryComponent.php @@ -0,0 +1,33 @@ +<?php
+/**
+ * @class SetQueryComponent Set query.
+ * Represents an update set query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class SetQueryComponent extends QueryComponent
+{
+ /**
+ * Construct a setting query
+ *
+ * @param string $table The table to modify
+ * @param string $field The field to modify
+ * @param mixed $value The value to set it to
+ */
+ function __construct($table, $field, $value)
+ {
+ global $CONFIG;
+
+ $this->table = $CONFIG->dbprefix . sanitise_string($table);
+ $this->field = sanitise_string($field);
+ if (is_numeric($value))
+ $this->value = (int)$value;
+ else
+ $this->value = "'".sanitise_string($value)."'";
+ }
+
+ function __toString()
+ {
+ return "{$this->table}.{$this->field}={$this->value}";
+ }
+}
diff --git a/engine/classes/SimpleQuery.php b/engine/classes/SimpleQuery.php new file mode 100644 index 000000000..cf5a18a50 --- /dev/null +++ b/engine/classes/SimpleQuery.php @@ -0,0 +1,152 @@ +<?php
+/**
+ * @class SimpleQuery A wrapper for Query which provides simple interface for common functions.
+ *
+ * This class provides simple interface functions for constructing a (reasonably) standard database
+ * query.
+ *
+ * The constructor for this class sets a number of defaults, for example sets default access controls
+ * and a limit and offset - to change this then set it manually.
+ *
+ * @author Curverider Ltd
+ * @see Query
+ */
+class SimpleQuery extends Query
+{
+ function __construct()
+ {
+ parent::__construct();
+
+ // Set a default query type (select)
+ $this->simpleQueryType();
+
+ // Set a default access control
+ $this->simpleAccessControl();
+
+ // Set default limit and offset
+ $this->simpleLimitAndOffset();
+ }
+
+ /**
+ * Set the query type.
+ *
+ * @param string $type The type of search - available are "select", "update", "delete", "insert".
+ */
+ public function simpleQueryType($type = "select")
+ {
+ $type = strtolower(sanitise_string($type));
+
+ switch ($type)
+ {
+ case "insert" :
+ return $this->setQueryType(InsertQueryTypeQueryComponent());
+ break;
+ case "delete" :
+ return $this->setQueryType(DeleteQueryTypeQueryComponent());
+ break;
+ case "update" :
+ return $this->setQueryType(UpdateQueryTypeQueryComponent());
+ break;
+ default: return $this->setQueryType(SelectQueryTypeQueryComponent());
+ }
+ }
+
+ /**
+ * Set a field to query in a select statement.
+ *
+ * @param string $table Table to query.
+ * @param string $field Field in that table.
+ */
+ public function simpleSelectField($table, $field) { return $this->setSelectField(new SelectFieldQueryComponent($table, $field)); }
+
+ /**
+ * Add a select field to query in a select statement.
+ *
+ * @param string $table Table to query.
+ * @param string $field Field in that table.
+ */
+ public function simpleAddSelectField($table, $field) { return $this->addSelectField(new SelectFieldQueryComponent($table, $field)); }
+
+ /**
+ * Add a set value to an update query.
+ *
+ * @param string $table The table to update.
+ * @param string $field The field in the table.
+ * @param mixed $value The value to set it to.
+ */
+ public function simpleSet($table, $field, $value) { return $this->addSet(new SetQueryComponent($table, $field, $value)); }
+
+ /**
+ * Add a join to the table.
+ *
+ * @param string $table Table one to join...
+ * @param string $field Field 1 with...
+ * @param string $table2 Table 2 ...
+ * @param string $field2 Field...
+ * @param string $operator Using this operator
+ */
+ public function simpleJoin($table1, $field1, $table2, $field2, $operator = "=") { return $this->addJoin(new JoinQueryComponent($table1, $field1, $table2, $field2, $operator)); }
+
+ /**
+ * Add a table to the query.
+ *
+ * @param string $table The table.
+ */
+ public function simpleTable($table) { return $this->addTable(new TableQueryComponent($table)); }
+
+ /**
+ * Compare one table/field to another table/field.
+ *
+ * @param string $left_table The table on the left of the operator
+ * @param string $left_field The left field
+ * @param string $operator The operator eg "=" or "<"
+ * @param string $right_table The table on the right of the operator
+ * @param string $right_field The right field
+ * @param string $link_operator How this where clause links with the previous clause, eg. "and" "or"
+ */
+ public function simpleWhereOnTable($left_table, $left_field, $operator, $right_table, $right_field, $link_operator = "and") { return $this->addWhere(new WhereQueryComponent($left_table, $left_field, $operator, $right_table, $right_field, $link_operator)); }
+
+ /**
+ * Compare one table/field to a value.
+ *
+ * @param string $left_table The table on the left of the operator
+ * @param string $left_field The left field
+ * @param string $operator The operator eg "=" or "<"
+ * @param string $value The value
+ * @param string $link_operator How this where clause links with the previous clause, eg. "and" "or"
+ */
+ public function simpleWhereOnValue($left_table, $left_field, $operator, $value, $link_operator = "and") { return $this->addWhere(new WhereStaticQueryComponent($left_table, $left_field, $operator, $value, $link_operator)); }
+
+ /**
+ * Set access control.
+ *
+ * @param string $acl_table The table where the access control field is.
+ * @param string $acl_field The field containing the access control.
+ * @param string $object_owner_id_field The field in $object_owner_table containing the owner information.
+ */
+ public function simpleAccessControl($acl_table = "entities", $acl_field = "access_id", $object_owner_id_field = "owner_guid") { return $this->setAccessControl(new AccessControlQueryComponent($acl_table, $acl_field, $acl_table, $object_owner_id_field)); }
+
+ /**
+ * Set the limit and offset.
+ *
+ * @param int $limit The limit.
+ * @param int $offset The offset.
+ */
+ public function simpleLimitAndOffset($limit = 25, $offset = 0) { return $this->setLimitAndOffset(new LimitOffsetQueryComponent($limit, $offset)); }
+
+ /**
+ * Set the order query.
+ *
+ * @param string $table The table to query
+ * @param string $field The field to query
+ * @param string $order Order the query
+ */
+ public function simpleOrder($table, $field, $order = "desc")
+ {
+ $table = sanitise_string($table);
+ $field = sanitise_string($field);
+ $order = strtolower(sanitise_string($order));
+
+ return $this->setOrder(new OrderQueryComponent($table, $field, $order)); break;
+ }
+}
diff --git a/engine/classes/TableQueryComponent.php b/engine/classes/TableQueryComponent.php new file mode 100644 index 000000000..54e6ab021 --- /dev/null +++ b/engine/classes/TableQueryComponent.php @@ -0,0 +1,21 @@ +<?php
+/**
+ * @class TableQueryComponent
+ * List of tables to select from or insert into.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class TableQueryComponent extends QueryComponent
+{
+ function __construct($table)
+ {
+ global $CONFIG;
+
+ $this->table = $CONFIG->dbprefix . sanitise_string($table);
+ }
+
+ function __toString()
+ {
+ return $this->table;
+ }
+}
diff --git a/engine/classes/UpdateQueryTypeQueryComponent.php b/engine/classes/UpdateQueryTypeQueryComponent.php new file mode 100644 index 000000000..226b14be7 --- /dev/null +++ b/engine/classes/UpdateQueryTypeQueryComponent.php @@ -0,0 +1,14 @@ +<?php
+/**
+ * @class UpdateQueryTypeQueryComponent
+ * An update query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class UpdateQueryTypeQueryComponent extends QueryTypeQueryComponent
+{
+ function __construct()
+ {
+ $this->query_type = "UPDATE";
+ }
+}
diff --git a/engine/classes/WhereQueryComponent.php b/engine/classes/WhereQueryComponent.php new file mode 100644 index 000000000..3130be7f8 --- /dev/null +++ b/engine/classes/WhereQueryComponent.php @@ -0,0 +1,44 @@ +<?php
+/**
+ * @class WhereQueryComponent
+ * A component of a where query.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class WhereQueryComponent extends QueryComponent
+{
+ /**
+ * A where query.
+ *
+ * @param string $left_table The table on the left of the operator
+ * @param string $left_field The left field
+ * @param string $operator The operator eg "=" or "<"
+ * @param string $right_table The table on the right of the operator
+ * @param string $right_field The right field
+ * @param string $link_operator How this where clause links with the previous clause, eg. "and" "or"
+ */
+ function __construct($left_table, $left_field, $operator, $right_table, $right_field, $link_operator = "and")
+ {
+ global $CONFIG;
+
+ $this->link_operator = sanitise_string($link_operator);
+ $this->left_table = $CONFIG->dbprefix . sanitise_string($left_table);
+ $this->left_field = sanitise_string($left_field);
+ $this->operator = sanitise_string($operator);
+ $this->right_table = $CONFIG->dbprefix . sanitise_string($right_table);
+ $this->right_field = sanitise_string($right_field);
+ }
+
+ /**
+ * Return the SQL without the link operator.
+ */
+ public function toStringNoLink()
+ {
+ return "{$this->left_table }.{$this->left_field} {$this->operator} {$this->right_table}.{$this->right_field}";
+ }
+
+ function __toString()
+ {
+ return "{$this->link_operator} " . $this->toStringNoLink();
+ }
+}
diff --git a/engine/classes/WhereSetQueryComponent.php b/engine/classes/WhereSetQueryComponent.php new file mode 100644 index 000000000..b5fe439a0 --- /dev/null +++ b/engine/classes/WhereSetQueryComponent.php @@ -0,0 +1,41 @@ +<?php
+/**
+ * @class WhereSetQueryComponent
+ * A where query that may contain other where queries (in brackets).
+ * @author Curverider Ltd
+ * @see Query
+ */
+class WhereSetQueryComponent extends WhereQueryComponent
+{
+ /**
+ * Construct a subset of wheres.
+ *
+ * @param array $wheres An array of WhereQueryComponent
+ * @param string $link_operator How this where clause links with the previous clause, eg. "and" "or"
+ */
+ function __construct(array $wheres, $link_operator = "and")
+ {
+ $this->link_operator = sanitise_string($link_operator);
+ $this->wheres = $wheres;
+ }
+
+ public function toStringNoLink()
+ {
+ $cnt = 0;
+ $string = " (";
+ foreach ($this->wheres as $where) {
+ if (!($where instanceof WhereQueryComponent))
+ throw new DatabaseException(elgg_echo('DatabaseException:WhereSetNonQuery'));
+
+ if (!$cnt)
+ $string.= $where->toStringNoLink();
+ else
+ $string.=" $where ";
+
+ $cnt ++;
+ }
+ $string .= ")";
+
+ return $string;
+ }
+}
diff --git a/engine/classes/WhereStaticQueryComponent.php b/engine/classes/WhereStaticQueryComponent.php new file mode 100644 index 000000000..ddc036fd1 --- /dev/null +++ b/engine/classes/WhereStaticQueryComponent.php @@ -0,0 +1,40 @@ +<?php
+/**
+ * @class WhereStaticQueryComponent
+ * A component of a where query where there is no right hand table, rather a static value.
+ * @author Curverider Ltd
+ * @see Query
+ */
+class WhereStaticQueryComponent extends WhereQueryComponent
+{
+ /**
+ * A where query.
+ *
+ * @param string $left_table The table on the left of the operator
+ * @param string $left_field The left field
+ * @param string $operator The operator eg "=" or "<"
+ * @param string $value The value
+ * @param string $link_operator How this where clause links with the previous clause, eg. "and" "or"
+ */
+ function __construct($left_table, $left_field, $operator, $value, $link_operator = "and")
+ {
+ global $CONFIG;
+
+ $this->link_operator = sanitise_string($link_operator);
+ $this->left_table = $CONFIG->dbprefix . sanitise_string($left_table);
+ $this->left_field = sanitise_string($left_field);
+ $this->operator = sanitise_string($operator);
+ if (is_numeric($value))
+ $this->value = (int)$value;
+ else
+ $this->value = "'".sanitise_string($value)."'";
+ }
+
+ /**
+ * Return the SQL without the link operator.
+ */
+ public function toStringNoLink()
+ {
+ return "{$this->left_table }.{$this->left_field} {$this->operator} {$this->value}";
+ }
+}
|