diff options
Diffstat (limited to 'services/bookmark2tagservice.php')
| -rw-r--r-- | services/bookmark2tagservice.php | 832 |
1 files changed, 417 insertions, 415 deletions
diff --git a/services/bookmark2tagservice.php b/services/bookmark2tagservice.php index 9cafec9..26a05c1 100644 --- a/services/bookmark2tagservice.php +++ b/services/bookmark2tagservice.php @@ -1,188 +1,189 @@ <?php class Bookmark2TagService { - var $db; - var $tablename; - - function &getInstance(&$db) { - static $instance; - if (!isset($instance)) - $instance =& new Bookmark2TagService($db); - return $instance; - } - - function Bookmark2TagService(&$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; - } - } - - //clean tags from strange characters - $tags = str_replace(array('"', '\''), "_", $tags); - - - $tags_count = count($tags); - for ($i = 0; $i < $tags_count; $i++) { - $tags[$i] = trim(strtolower($tags[$i])); - if ($fromApi) { - include_once(dirname(__FILE__) .'/../functions.inc.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(dirname(__FILE__) .'/../functions.inc.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 =& ServiceFactory::getServiceInstance('BookmarkService'); - $tts =& ServiceFactory::getServiceInstance('Tag2TagService'); - - // Create links between tags - foreach($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); + var $db; + var $tablename; + + function &getInstance(&$db) { + static $instance; + if (!isset($instance)) + $instance =& new Bookmark2TagService($db); + return $instance; + } + + function Bookmark2TagService(&$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; + } + } + + //clean tags from strange characters + $tags = str_replace(array('"', '\''), "_", $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(dirname(__FILE__) .'/../functions.inc.php'); + $tags[$i] = convertTag($tags[$i], 'in'); } - $tags[$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], '>', $uId); + } + + if ($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(dirname(__FILE__) .'/../functions.inc.php'); + if ($keys = multi_array_search($extension, $GLOBALS['filetypes'])) { + $tags[] = 'system:filetype:'. $extension; + $tags[] = 'system:media:'. array_shift($keys); } - $tags[$key] = $pieces[$nbPieces-1]; // Attach just the last tag to the bookmark - } - } + } + // 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 =& ServiceFactory::getServiceInstance('BookmarkService'); + $tts =& ServiceFactory::getServiceInstance('Tag2TagService'); + + // Create links between tags + foreach($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] != '') { - $values = array( + + } + + // Add the categories to the DB. + for ($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 =& ServiceFactory::getServiceInstance('BookmarkService'); - - $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,
+ ); + + 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 =& ServiceFactory::getServiceInstance('BookmarkService'); + + $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',
@@ -191,245 +192,246 @@ class Bookmark2TagService { $GLOBALS['tableprefix'].'bookmarks',
$uId);
- if (!($dbresult =& $this->db->sql_query($query))) {
- message_die(GENERAL_ERROR, 'Could not delete tags', '', __LINE__, __FILE__, $query, $this->db);
- return false;
- }
+ if (!($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_int($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 tag'; - - 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']; - } - - return $tags; - } - - function &getTags($userid = NULL) { - $userservice =& ServiceFactory::getServiceInstance('UserService'); - $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); - 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); - return $output; - } - - // Returns the most popular tags used for a particular bookmark hash - function &getRelatedTagsByHash($hash, $limit = 20) { - $userservice = & ServiceFactory :: getServiceInstance('UserService'); - $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; - } - return $this->db->sql_fetchrowset($dbresult); - } - - 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'; - } 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); - 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 ($row['tCount'] > 0) { - return true; - } - } - return false; - } - - function renameTag($userid, $old, $new, $fromApi = false) { - $bookmarkservice =& ServiceFactory::getServiceInstance('BookmarkService'); - - if (is_null($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, $old); - - // Attach new tags - foreach(array_keys($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 = $value; } + return true;
+ } + + function &getTagsForBookmark($bookmarkid) { + if (!is_int($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 tag'; + + 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']; + } + + return $tags; + } + + function &getTags($userid = NULL) { + $userservice =& ServiceFactory::getServiceInstance('UserService'); + $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); + 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); + return $output; + } + + // Returns the most popular tags used for a particular bookmark hash + function &getRelatedTagsByHash($hash, $limit = 20) { + $userservice = & ServiceFactory :: getServiceInstance('UserService'); + $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); + return $output; + } + + function &getPopularTags($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'; + } 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); + 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 ($row['tCount'] > 0) { + return true; + } + } + return false; + } + + function renameTag($userid, $old, $new, $fromApi = false) { + $bookmarkservice =& ServiceFactory::getServiceInstance('BookmarkService'); + + if (is_null($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, $old); + + // Attach new tags + foreach(array_keys($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; } } ?> |