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<?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 tag statistics 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_TagStat 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 $instance;
}
protected function __construct($db)
{
$this->db = $db;
$this->tablename = $GLOBALS['tableprefix'] .'tagsstats';
}
function getNbChildren($tag1, $relationType, $uId) {
$tts =SemanticScuttle_Service_Factory::get('Tag2Tag');
$query = "SELECT tag1, relationType, uId FROM `". $tts->getTableName() ."`";
$query.= " WHERE tag1 = '" .$tag1 ."'";
$query.= " AND relationType = '". $relationType ."'";
$query.= " AND uId = '".$uId."'";
$dbres = $this->db->sql_query($query);
$rows = $this->db->sql_numrows($dbres);
$this->db->sql_freeresult($dbres);
return $rows;
}
function getNbDescendants($tag1, $relationType, $uId) {
$query = "SELECT nb FROM `". $this->getTableName() ."`";
$query.= " WHERE tag1 = '" .$tag1 ."'";
$query.= " AND relationType = '". $relationType ."'";
$query.= " AND uId = '".$uId."'";
$dbresults = $this->db->sql_query($query);
$row = $this->db->sql_fetchrow($dbresults);
$this->db->sql_freeresult($dbresults);
if($row['nb'] == null) {
return 0;
} else {
return (int) $row['nb'];
}
}
function getMaxDepth($tag1, $relationType, $uId) {
$query = "SELECT depth FROM `". $this->getTableName() ."`";
$query.= " WHERE tag1 = '" .$tag1 ."'";
$query.= " AND relationType = '". $relationType ."'";
$query.= " AND uId = '".$uId."'";
$dbresults = $this->db->sql_query($query);
$row = $this->db->sql_fetchrow($dbresults);
$this->db->sql_freeresult($dbresults);
if($row['depth'] == null) {
return 0;
} else {
return (int) $row['depth'];
};
}
function getNbUpdates($tag1, $relationType, $uId) {
$query = "SELECT nbupdate FROM `". $this->getTableName() ."`";
$query.= " WHERE tag1 = '" .$tag1 ."'";
$query.= " AND relationType = '". $relationType ."'";
$query.= " AND uId = '".$uId."'";
$dbresults = $this->db->sql_query($query);
$row = $this->db->sql_fetchrow($dbresults);
$this->db->sql_freeresult($dbresults);
if($row['nbupdate'] == null) {
return 0;
} else {
return (int) $row['nbupdate'];
}
}
function existStat($tag1, $relationType, $uId) {
$query = "SELECT tag1, relationType, uId FROM `". $this->getTableName() ."`";
$query.= " WHERE tag1 = '" .$tag1 ."'";
$query.= " AND relationType = '". $relationType ."'";
$query.= " AND uId = '".$uId."'";
$dbres = $this->db->sql_query($query);
$rows = $this->db->sql_numrows($dbres);
$this->db->sql_freeresult($dbres);
return $rows > 0;
}
function createStat($tag1, $relationType, $uId) {
$query = "INSERT INTO `". $this->getTableName() ."`";
$query.= "(tag1, relationType, uId)";
$query.= " VALUES ('".$tag1."','".$relationType."','".$uId."')";
$this->db->sql_query($query);
}
function updateStat($tag1, $relationType, $uId=null, $stoplist=array()) {
if(in_array($tag1, $stoplist)) {
return false;
}
$tts =SemanticScuttle_Service_Factory::get('Tag2Tag');
$linkedTags = $tts->getLinkedTags($tag1, $relationType, $uId);
$nbDescendants = 0;
$maxDepth = 0;
foreach($linkedTags as $linkedTag) {
$nbDescendants+= 1 + $this->getNbDescendants($linkedTag, $relationType, $uId);
$maxDepth = max($maxDepth, 1 + $this->getMaxDepth($linkedTag, $relationType, $uId));
}
$this->setNbDescendants($tag1, $relationType, $uId, $nbDescendants);
$this->setMaxDepth($tag1, $relationType, $uId, $maxDepth);
$this->increaseNbUpdate($tag1, $relationType, $uId);
// propagation to the precedent tags
$linkedTags = $tts->getLinkedTags($tag1, $relationType, $uId, true);
$stoplist[] = $tag1;
foreach($linkedTags as $linkedTag) {
$this->updateStat($linkedTag, $relationType, $uId, $stoplist);
}
}
function updateAllStat() {
$tts =SemanticScuttle_Service_Factory::get('Tag2Tag');
$query = "SELECT tag1, uId FROM `". $tts->getTableName() ."`";
$query.= " WHERE relationType = '>'";
//die($query);
if (! ($dbresult = $this->db->sql_query($query)) ){
message_die(GENERAL_ERROR, 'Could not update stats', '', __LINE__, __FILE__, $query, $this->db);
return false;
}
$rowset = $this->db->sql_fetchrowset($dbresult);
foreach($rowset as $row) {
$this->updateStat($row['tag1'], '>', $row['uId']);
}
$this->db->sql_freeresult($dbresult);
}
function setNbDescendants($tag1, $relationType, $uId, $nb) {
if(!$this->existStat($tag1, $relationType, $uId)) {
$this->createStat($tag1, $relationType, $uId);
}
$query = "UPDATE `". $this->getTableName() ."`";
$query.= " SET nb = ". $nb;
$query.= " WHERE tag1 = '" .$tag1 ."'";
$query.= " AND relationType = '". $relationType ."'";
$query.= " AND uId = '".$uId."'";
$this->db->sql_freeresult($this->db->sql_query($query));
}
function setMaxDepth($tag1, $relationType, $uId, $depth) {
if(!$this->existStat($tag1, $relationType, $uId)) {
$this->createStat($tag1, $relationType, $uId);
}
$query = "UPDATE `". $this->getTableName() ."`";
$query.= " SET depth = ". $depth;
$query.= " WHERE tag1 = '" .$tag1 ."'";
$query.= " AND relationType = '". $relationType ."'";
$query.= " AND uId = '".$uId."'";
$this->db->sql_query($query);
}
function increaseNbUpdate($tag1, $relationType, $uId) {
if(!$this->existStat($tag1, $relationType, $uId)) {
$this->createStat($tag1, $relationType, $uId);
}
$query = "UPDATE `". $this->getTableName() ."`";
$query.= " SET nbupdate = nbupdate + 1";
$query.= " WHERE tag1 = '" .$tag1 ."'";
$query.= " AND relationType = '". $relationType ."'";
$query.= " AND uId = '".$uId."'";
//die($query);
$this->db->sql_query($query);
}
function deleteTagStatForUser($uId) {
$query = 'DELETE FROM '. $this->getTableName() .' WHERE uId = '. intval($uId);
if (!($dbresult = $this->db->sql_query($query))) {
message_die(GENERAL_ERROR, 'Could not delete tag stats', '', __LINE__,
__FILE__, $query, $this->db);
return false;
}
return true;
}
function deleteAll() {
$query = 'TRUNCATE TABLE `'. $this->getTableName() .'`';
$this->db->sql_query($query);
}
}
?>
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