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Diffstat (limited to 'src/SemanticScuttle/Service/CommonDescription.php')
-rw-r--r-- | src/SemanticScuttle/Service/CommonDescription.php | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/SemanticScuttle/Service/CommonDescription.php b/src/SemanticScuttle/Service/CommonDescription.php new file mode 100644 index 0000000..d03b34a --- /dev/null +++ b/src/SemanticScuttle/Service/CommonDescription.php @@ -0,0 +1,229 @@ +<?php +/** + * SemanticScuttle - your social bookmark manager. + * + * PHP version 5. + * + * @category Bookmarking + * @package SemanticScuttle + * @author Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net> + * @author Christian Weiske <cweiske@cweiske.de> + * @author Eric Dane <ericdane@users.sourceforge.net> + * @license GPL http://www.gnu.org/licenses/gpl.html + * @link http://sourceforge.net/projects/semanticscuttle + */ + +/** + * SemanticScuttle common bookmark description service. + * + * @category Bookmarking + * @package SemanticScuttle + * @author Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net> + * @author Christian Weiske <cweiske@cweiske.de> + * @author Eric Dane <ericdane@users.sourceforge.net> + * @license GPL http://www.gnu.org/licenses/gpl.html + * @link http://sourceforge.net/projects/semanticscuttle + */ +class SemanticScuttle_Service_CommonDescription extends SemanticScuttle_DbService +{ + /** + * Returns the single service instance + * + * @param DB $db Database object + * + * @return SemanticScuttle_Service + */ + public static function getInstance($db) + { + static $instance; + if (!isset($instance)) { + $instance = new self($db); + } + return $instance; + } + + public function __construct($db) + { + $this->db = $db; + $this->tablename = $GLOBALS['tableprefix'] .'commondescription'; + } + + function addTagDescription($tag, $desc, $uId, $time) { + $tag = self::getSortedTag($tag); + + // Check if no modification + $lastDesc = $this->getLastTagDescription($tag); + if($lastDesc['cdDescription'] == $desc) { + return true; + } + + // If modification + $datetime = gmdate('Y-m-d H:i:s', $time); + $values = array('tag'=>$tag, 'cdDescription'=>$desc, 'uId'=>$uId, 'cdDatetime'=>$datetime); + $sql = 'INSERT INTO '. $this->getTableName() .' '. $this->db->sql_build_array('INSERT', $values); + + if (!($dbresult = $this->db->sql_query($sql))) { + $this->db->sql_transaction('rollback'); + message_die(GENERAL_ERROR, 'Could not add tag description', '', __LINE__, __FILE__, $sql, $this->db); + return false; + } + + return true; + } + + function getLastTagDescription($tag) { + $tag = self::getSortedTag($tag); + + $query = "SELECT *"; + $query.= " FROM `". $this->getTableName() ."`"; + $query.= ' WHERE tag=\'' . $this->db->sql_escape($tag) . "'"; + $query.= " ORDER BY cdDatetime DESC"; + + if (!($dbresult = $this->db->sql_query_limit($query, 1, 0))) { + message_die(GENERAL_ERROR, 'Could not get tag description', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + $row = $this->db->sql_fetchrow($dbresult); + $this->db->sql_freeresult($dbresult); + if ($row) { + return $row; + } else { + return false; + } + } + + function getAllTagsDescription($tag) { + $query = "SELECT *"; + $query.= " FROM `". $this->getTableName() ."`"; + $query.= ' WHERE tag=\'' . $this->db->sql_escape($tag) . "'"; + $query.= " ORDER BY cdDatetime DESC"; + + if (!($dbresult = $this->db->sql_query($query))) { + message_die(GENERAL_ERROR, 'Could not get tag descriptions', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + $res = $this->db->sql_fetchrowset($dbresult); + $this->db->sql_freeresult($dbresult); + return $res; + } + + function getDescriptionById($cdId) { + $query = "SELECT *"; + $query.= " FROM `". $this->getTableName() ."`"; + $query.= ' WHERE cdId=\'' . $this->db->sql_escape($cdId) . "'"; + + if (!($dbresult = $this->db->sql_query($query))) { + message_die(GENERAL_ERROR, 'Could not get tag descriptions', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + if ($row = $this->db->sql_fetchrow($dbresult)) { + $this->db->sql_freeresult($dbresult); + return $row; + } else { + return false; + } + + } + + function addBookmarkDescription($bHash, $title, $desc, $uId, $time) { + // Check if no modification + $lastDesc = $this->getLastBookmarkDescription($bHash); + if($lastDesc['cdTitle'] == $title && $lastDesc['cdDescription'] == $desc) { + return true; + } + + // If modification + $datetime = gmdate('Y-m-d H:i:s', $time); + $values = array('bHash'=>$bHash, 'cdTitle'=>$title, 'cdDescription'=>$desc, 'uId'=>$uId, 'cdDatetime'=>$datetime); + $sql = 'INSERT INTO '. $this->getTableName() .' '. $this->db->sql_build_array('INSERT', $values); + + if (!($dbresult = $this->db->sql_query($sql))) { + $this->db->sql_transaction('rollback'); + message_die(GENERAL_ERROR, 'Could not add bookmark description', '', __LINE__, __FILE__, $sql, $this->db); + return false; + } + return true; + } + + function getLastBookmarkDescription($bHash) { + $query = "SELECT *"; + $query.= " FROM `". $this->getTableName() ."`"; + $query.= ' WHERE bHash=\'' . $this->db->sql_escape($bHash) . "'"; + $query.= " ORDER BY cdDatetime DESC"; + + if (!($dbresult = $this->db->sql_query_limit($query, 1, 0))) { + message_die(GENERAL_ERROR, 'Could not get bookmark description', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + $row = $this->db->sql_fetchrow($dbresult); + $this->db->sql_freeresult($dbresult); + if ($row) { + return $row; + } else { + return false; + } + } + + function getAllBookmarksDescription($bHash) { + $query = "SELECT *"; + $query.= " FROM `". $this->getTableName() ."`"; + $query.= ' WHERE bHash=\'' . $this->db->sql_escape($bHash) . "'"; + $query.= " ORDER BY cdDatetime DESC"; + + if (!($dbresult = $this->db->sql_query($query))) { + message_die(GENERAL_ERROR, 'Could not get bookmark descriptions', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + $rowset = $this->db->sql_fetchrowset($dbresult); + $this->db->sql_freeresult($dbresult); + return $rowset; + } + + function deleteDescriptionsForUser($uId){ + $query = 'DELETE FROM '. $this->getTableName() . ' WHERE uId = '. intval($uId); + + $this->db->sql_transaction('begin'); + if (!($dbresult = $this->db->sql_query($query))) { + $this->db->sql_transaction('rollback'); + message_die(GENERAL_ERROR, 'Could not delete user descriptions', '', + __LINE__, __FILE__, $query, $this->db); + return false; + } + + return true; + } + + + function deleteAll() { + $query = 'TRUNCATE TABLE `'. $this->getTableName() .'`'; + $this->db->sql_query($query); + } + + + + /** + * Sorts a tag combination. + * + * Multiple tags are separated by "+" signs. Semantically, + * tag combinations like "blue+flower" and "flower+blue" are identical. + * This method sorts the single tags so i.e. the common bookmark description + * of "blue+flower" is also shown for "flower+blue". + * + * @param string $tag Single tag or tag combination ("+") + * + * @return string Sorted tag combination + */ + protected static function getSortedTag($tag) + { + $tags = explode('+', $tag); + sort($tags); + return implode('+', $tags); + } + +} +?> |