diff options
Diffstat (limited to 'src/SemanticScuttle/Service/Bookmark2Tag.php')
| -rw-r--r-- | src/SemanticScuttle/Service/Bookmark2Tag.php | 489 |
1 files changed, 489 insertions, 0 deletions
diff --git a/src/SemanticScuttle/Service/Bookmark2Tag.php b/src/SemanticScuttle/Service/Bookmark2Tag.php new file mode 100644 index 0000000..bd3f3af --- /dev/null +++ b/src/SemanticScuttle/Service/Bookmark2Tag.php @@ -0,0 +1,489 @@ +<?php +class SemanticScuttle_Service_Bookmark2Tag extends SemanticScuttle_Service +{ + var $tablename; + + + /** + * 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 = $GLOBALS['tableprefix'] .'bookmarks2tags'; + } + + function isNotSystemTag($var) { + if (utf8_substr($var, 0, 7) == 'system:') + return false; + else + return true; + } + + function attachTags($bookmarkid, $tags, $fromApi = false, $extension = NULL, $replace = true, $fromImport = false) { + // Make sure that categories is an array of trimmed strings, and that if the categories are + // coming in from an API call to add a bookmark, that underscores are converted into strings. + + if (!is_array($tags)) { + $tags = trim($tags); + if ($tags != '') { + if (substr($tags, -1) == ',') { + $tags = substr($tags, 0, -1); + } + if ($fromApi) { + $tags = explode(' ', $tags); + } else { + $tags = explode(',', $tags); + } + } else { + $tags = null; + } + } + + $tagservice =SemanticScuttle_Service_Factory::getServiceInstance('Tag'); + $tags = $tagservice->normalize($tags); + + + $tags_count = is_array($tags)?count($tags):0; + + for ($i = 0; $i < $tags_count; $i++) { + $tags[$i] = trim(strtolower($tags[$i])); + if ($fromApi) { + include_once 'SemanticScuttle/functions.php'; + $tags[$i] = convertTag($tags[$i], 'in'); + } + } + + if ($tags_count > 0) { + // Remove system tags + $tags = array_filter($tags, array($this, "isNotSystemTag")); + + // Eliminate any duplicate categories + $temp = array_unique($tags); + $tags = array_values($temp); + } else { + // Unfiled + $tags[] = 'system:unfiled'; + } + + // Media and file types + if (!is_null($extension)) { + include_once 'SemanticScuttle/functions.php'; + + if ($keys = multi_array_search($extension, $GLOBALS['filetypes'])) { + $tags[] = 'system:filetype:'. $extension; + $tags[] = 'system:media:'. array_shift($keys); + } + } + + // Imported + if ($fromImport) { + $tags[] = 'system:imported'; + } + + $this->db->sql_transaction('begin'); + + if ($replace) { + if (!$this->deleteTagsForBookmark($bookmarkid)){ + $this->db->sql_transaction('rollback'); + message_die(GENERAL_ERROR, 'Could not attach tags (deleting old ones failed)', '', __LINE__, __FILE__, $sql, $this->db); + return false; + } + } + + $bs =SemanticScuttle_Service_Factory::getServiceInstance('Bookmark'); + $tts =SemanticScuttle_Service_Factory::getServiceInstance('Tag2Tag'); + + // Create links between tags + foreach($tags as $key => $tag) { + if(strpos($tag, '=')) { + // case "=" + $pieces = explode('=', $tag); + $nbPieces = count($pieces); + if($nbPieces > 1) { + for($i = 0; $i < $nbPieces-1; $i++) { + $bookmark = $bs->getBookmark($bookmarkid); + $uId = $bookmark['uId']; + $tts->addLinkedTags($pieces[$i], $pieces[$i+1], '=', $uId); + } + $tags[$key] = $pieces[0]; // Attach just the last tag to the bookmark + } + } else { + // case ">" + $pieces = explode('>', $tag); + $nbPieces = count($pieces); + if($nbPieces > 1) { + for($i = 0; $i < $nbPieces-1; $i++) { + $bookmark = $bs->getBookmark($bookmarkid); + $uId = $bookmark['uId']; + $tts->addLinkedTags($pieces[$i], $pieces[$i+1], '>', $uId); + } + $tags[$key] = $pieces[$nbPieces-1]; // Attach just the last tag to the bookmark + } + } + + + } + + // Add the categories to the DB. + for ($i = 0; $i < count($tags); $i++) { + if ($tags[$i] != '') { + $values = array( + 'bId' => intval($bookmarkid), + 'tag' => $tags[$i] + ); + + if (!$this->hasTag($bookmarkid, $tags[$i])) { + $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 attach tags', '', __LINE__, __FILE__, $sql, $this->db); + return false; + } + } + } + } + $this->db->sql_transaction('commit'); + return true; + } + + function deleteTag($uId, $tag) { + $bs =SemanticScuttle_Service_Factory::getServiceInstance('Bookmark'); + + $query = 'DELETE FROM '. $this->getTableName(); + $query.= ' USING '. $this->getTableName() .', '. $bs->getTableName(); + $query.= ' WHERE '. $this->getTableName() .'.bId = '. $bs->getTableName() .'.bId'; + $query.= ' AND '. $bs->getTableName() .'.uId = '. $uId; + $query.= ' AND '. $this->getTableName() .'.tag = "'. $this->db->sql_escape($tag) .'"'; + + if (!($dbresult =& $this->db->sql_query($query))) { + message_die(GENERAL_ERROR, 'Could not delete tags', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + return true; + } + + function deleteTagsForBookmark($bookmarkid) { + if (!is_int($bookmarkid)) { + message_die(GENERAL_ERROR, 'Could not delete tags (invalid bookmarkid)', '', __LINE__, __FILE__, $query); + return false; + } + + $query = 'DELETE FROM '. $this->getTableName() .' WHERE bId = '. intval($bookmarkid); + + if (!($dbresult =& $this->db->sql_query($query))) { + message_die(GENERAL_ERROR, 'Could not delete tags', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + return true; + } + + /* Allow deletion in admin page */ + function deleteTagsForUser($uId) { + $qmask = 'DELETE FROM %s USING %s, %s WHERE %s.bId = %s.bId AND %s.uId = %d'; + $query = sprintf($qmask, + $this->getTableName(), + $this->getTableName(), + $GLOBALS['tableprefix'].'bookmarks', + $this->getTableName(), + $GLOBALS['tableprefix'].'bookmarks', + $GLOBALS['tableprefix'].'bookmarks', + $uId); + + if (!($dbresult =& $this->db->sql_query($query))) { + message_die(GENERAL_ERROR, 'Could not delete tags', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + return true; + } + + function &getTagsForBookmark($bookmarkid) { + if (!is_numeric($bookmarkid)) { + message_die(GENERAL_ERROR, 'Could not get tags (invalid bookmarkid)', '', __LINE__, __FILE__, $query); + return false; + } + + $query = 'SELECT tag FROM '. $this->getTableName() .' WHERE bId = '. intval($bookmarkid) .' AND LEFT(tag, 7) <> "system:" ORDER BY id ASC'; + + if (!($dbresult =& $this->db->sql_query($query))) { + message_die(GENERAL_ERROR, 'Could not get tags', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + $tags = array(); + while ($row =& $this->db->sql_fetchrow($dbresult)) { + $tags[] = $row['tag']; + } + $this->db->sql_freeresult($dbresult); + return $tags; + } + + function &getTags($userid = NULL) { + $userservice =SemanticScuttle_Service_Factory::getServiceInstance('User'); + $logged_on_user = $userservice->getCurrentUserId(); + + $query = 'SELECT T.tag, COUNT(B.bId) AS bCount FROM '. $GLOBALS['tableprefix'] .'bookmarks AS B INNER JOIN '. $userservice->getTableName() .' AS U ON B.uId = U.'. $userservice->getFieldName('primary') .' INNER JOIN '. $GLOBALS['tableprefix'] .'bookmarks2tags AS T ON B.bId = T.bId'; + + $conditions = array(); + if (!is_null($userid)) { + $conditions['U.'. $userservice->getFieldName('primary')] = intval($userid); + if ($logged_on_user != $userid) + $conditions['B.bStatus'] = 0; + } else { + $conditions['B.bStatus'] = 0; + } + + $query .= ' WHERE '. $this->db->sql_build_array('SELECT', $conditions) .' AND LEFT(T.tag, 7) <> "system:" GROUP BY T.tag ORDER BY bCount DESC, tag'; + + if (!($dbresult =& $this->db->sql_query($query))) { + message_die(GENERAL_ERROR, 'Could not get tags', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + $output = $this->db->sql_fetchrowset($dbresult); + $this->db->sql_freeresult($dbresult); + return $output; + } + + + // Returns the tags related to the specified tags; i.e. attached to the same bookmarks + function &getRelatedTags($tags, $for_user = NULL, $logged_on_user = NULL, $limit = 10) { + $conditions = array(); + // Only count the tags that are visible to the current user. + if ($for_user != $logged_on_user || is_null($for_user)) + $conditions['B.bStatus'] = 0; + + if (!is_null($for_user)) + $conditions['B.uId'] = $for_user; + + // Set up the tags, if need be. + if (is_numeric($tags)) + $tags = NULL; + if (!is_array($tags) and !is_null($tags)) + $tags = explode('+', trim($tags)); + + $tagcount = count($tags); + for ($i = 0; $i < $tagcount; $i++) { + $tags[$i] = trim($tags[$i]); + } + + // Set up the SQL query. + $query_1 = 'SELECT DISTINCTROW T0.tag, COUNT(B.bId) AS bCount FROM '. $GLOBALS['tableprefix'] .'bookmarks AS B, '. $this->getTableName() .' AS T0'; + $query_2 = ''; + $query_3 = ' WHERE B.bId = T0.bId '; + if (count($conditions) > 0) + $query_4 = ' AND '. $this->db->sql_build_array('SELECT', $conditions); + else + $query_4 = ''; + // Handle the parts of the query that depend on any tags that are present. + for ($i = 1; $i <= $tagcount; $i++) { + $query_2 .= ', '. $this->getTableName() .' AS T'. $i; + $query_4 .= ' AND T'. $i .'.bId = B.bId AND T'. $i .'.tag = "'. $this->db->sql_escape($tags[$i - 1]) .'" AND T0.tag <> "'. $this->db->sql_escape($tags[$i - 1]) .'"'; + } + $query_5 = ' AND LEFT(T0.tag, 7) <> "system:" GROUP BY T0.tag ORDER BY bCount DESC, T0.tag'; + $query = $query_1 . $query_2 . $query_3 . $query_4 . $query_5; + + if (! ($dbresult =& $this->db->sql_query_limit($query, $limit)) ){ + message_die(GENERAL_ERROR, 'Could not get related tags', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + $output = $this->db->sql_fetchrowset($dbresult); + $this->db->sql_freeresult($dbresult); + return $output; + } + + // Returns the most popular tags used for a particular bookmark hash + function &getRelatedTagsByHash($hash, $limit = 20) { + $userservice = SemanticScuttle_Service_Factory :: getServiceInstance('User'); + $sId = $userservice->getCurrentUserId(); + // Logged in + if ($userservice->isLoggedOn()) { + $arrWatch = $userservice->getWatchList($sId); + // From public bookmarks or user's own + $privacy = ' AND ((B.bStatus = 0) OR (B.uId = '. $sId .')'; + // From shared bookmarks in watchlist + foreach ($arrWatch as $w) { + $privacy .= ' OR (B.uId = '. $w .' AND B.bStatus = 1)'; + } + $privacy .= ') '; + // Not logged in + } else { + $privacy = ' AND B.bStatus = 0 '; + } + + $query = 'SELECT T.tag, COUNT(T.tag) AS bCount FROM '.$GLOBALS['tableprefix'].'bookmarks AS B LEFT JOIN '.$GLOBALS['tableprefix'].'bookmarks2tags AS T ON B.bId = T.bId WHERE B.bHash = "'. $hash .'" '. $privacy .'AND LEFT(T.tag, 7) <> "system:" GROUP BY T.tag ORDER BY bCount DESC'; + + if (!($dbresult =& $this->db->sql_query_limit($query, $limit))) { + message_die(GENERAL_ERROR, 'Could not get related tags for this hash', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + $output = $this->db->sql_fetchrowset($dbresult); + $this->db->sql_freeresult($dbresult); + return $output; + } + + function &getAdminTags($limit = 30, $logged_on_user = NULL, $days = NULL) { + // look for admin ids + $userservice = SemanticScuttle_Service_Factory :: getServiceInstance('User'); + $adminIds = $userservice->getAdminIds(); + + // ask for their tags + return $this->getPopularTags($adminIds, $limit, $logged_on_user, $days); + } + + function &getContactTags($user, $limit = 30, $logged_on_user = NULL, $days = NULL) { + // look for contact ids + $userservice = SemanticScuttle_Service_Factory :: getServiceInstance('User'); + $contacts = $userservice->getWatchlist($user); + + // add the user (to show him/her also his/her tags) + if(!is_null($logged_on_user)) { + $contacts[] = $logged_on_user; + } + + // ask for their tags + return $this->getPopularTags($contacts, $limit, $logged_on_user, $days); + } + + // $users can be {NULL, an id, an array of id} + function &getPopularTags($user = NULL, $limit = 30, $logged_on_user = NULL, $days = NULL) { + // Only count the tags that are visible to the current user. + if (($user != $logged_on_user) || is_null($user) || ($user === false)) + $privacy = ' AND B.bStatus = 0'; + else + $privacy = ''; + + if (is_null($days) || !is_int($days)) + $span = ''; + else + $span = ' AND B.bDatetime > "'. date('Y-m-d H:i:s', time() - (86400 * $days)) .'"'; + + $query = 'SELECT T.tag, COUNT(T.bId) AS bCount FROM '. $this->getTableName() .' AS T, '. $GLOBALS['tableprefix'] .'bookmarks AS B WHERE '; + if (is_null($user) || ($user === false)) { + $query .= 'B.bId = T.bId AND B.bStatus = 0'; + } elseif(is_array($user)) { + $query .= ' (1 = 0'; //tricks + foreach($user as $u) { + $query .= ' OR B.uId = '. $this->db->sql_escape($u) .' AND B.bId = T.bId'; + } + $query .= ' )'; + } else { + $query .= 'B.uId = '. $this->db->sql_escape($user) .' AND B.bId = T.bId'. $privacy; + } + $query .= $span .' AND LEFT(T.tag, 7) <> "system:" GROUP BY T.tag ORDER BY bCount DESC, tag'; + + if (!($dbresult =& $this->db->sql_query_limit($query, $limit))) { + message_die(GENERAL_ERROR, 'Could not get popular tags', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + $output = $this->db->sql_fetchrowset($dbresult); + $this->db->sql_freeresult($dbresult); + return $output; + } + + function hasTag($bookmarkid, $tag) { + $query = 'SELECT COUNT(*) AS tCount FROM '. $this->getTableName() .' WHERE bId = '. intval($bookmarkid) .' AND tag ="'. $this->db->sql_escape($tag) .'"'; + + if (! ($dbresult =& $this->db->sql_query($query)) ) { + message_die(GENERAL_ERROR, 'Could not find tag', '', __LINE__, __FILE__, $query, $this->db); + return false; + } + + if ($row =& $this->db->sql_fetchrow($dbresult)) { + if ($row['tCount'] > 0) { + $output = true; + } + } + $output = false; + $this->db->sql_freeresult($dbresult); + return $output; + } + + function renameTag($userid, $old, $new, $fromApi = false) { + $bookmarkservice =SemanticScuttle_Service_Factory::getServiceInstance('Bookmark'); + $tagservice =SemanticScuttle_Service_Factory::getServiceInstance('Tag'); + + if (is_null($userid) || is_null($old) || is_null($new)) + return false; + + // Find bookmarks with old tag + $bookmarksInfo =& $bookmarkservice->getBookmarks(0, NULL, $userid, $old); + $bookmarks =& $bookmarksInfo['bookmarks']; + + // Delete old tag + $this->deleteTag($userid, $old); + + // Attach new tags + $new = $tagservice->normalize($new); + + foreach(array_keys($bookmarks) as $key) { + $row =& $bookmarks[$key]; + $this->attachTags($row['bId'], $new, $fromApi, NULL, false); + } + + return true; + } + + function &tagCloud($tags = NULL, $steps = 5, $sizemin = 90, $sizemax = 225, $sortOrder = NULL) { + + if (is_null($tags) || count($tags) < 1) { + $output = false; + return $output; + } + + $min = $tags[count($tags) - 1]['bCount']; + $max = $tags[0]['bCount']; + + for ($i = 1; $i <= $steps; $i++) { + $delta = ($max - $min) / (2 * $steps - $i); + $limit[$i] = $i * $delta + $min; + } + $sizestep = ($sizemax - $sizemin) / $steps; + foreach ($tags as $row) { + $next = false; + for ($i = 1; $i <= $steps; $i++) { + if (!$next && $row['bCount'] <= $limit[$i]) { + $size = $sizestep * ($i - 1) + $sizemin; + $next = true; + } + } + $tempArray = array('size' => $size .'%'); + $row = array_merge($row, $tempArray); + $output[] = $row; + } + + if ($sortOrder == 'alphabet_asc') { + usort($output, create_function('$a,$b','return strcasecmp(utf8_deaccent($a["tag"]), utf8_deaccent($b["tag"]));')); + } + + return $output; + } + + function deleteAll() { + $query = 'TRUNCATE TABLE `'. $this->getTableName() .'`'; + $this->db->sql_query($query); + } + + + // Properties + function getTableName() { return $this->tablename; } + function setTableName($value) { $this->tablename = $value; } +} +?> |