TagCloudTriggers.php
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<?php
/*
* $Id: $
*
* KnowledgeTree Open Source Edition
* Document Management Made Simple
* Copyright (C) 2004 - 2008 The Jam Warehouse Software (Pty) Limited
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 3 as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can contact The Jam Warehouse Software (Pty) Limited, Unit 1, Tramber Place,
* Blake Street, Observatory, 7925 South Africa. or email info@knowledgetree.com.
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU General Public License version 3.
*
* In accordance with Section 7(b) of the GNU General Public License version 3,
* these Appropriate Legal Notices must retain the display of the "Powered by
* KnowledgeTree" logo and retain the original copyright notice. If the display of the
* logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
* must display the words "Powered by KnowledgeTree" and retain the original
* copyright notice.
* Contributor( s): ______________________________________
*
*/
/**
* Trigger for document add (postValidate)
*
*/
class KTAddDocumentTrigger {
var $aInfo = null;
/**
* function to set the info for the trigger
*
* @param array $aInfo
*/
function setInfo(&$aInfo) {
$this->aInfo =& $aInfo;
}
/**
* postValidate method for trigger
*
* @return unknown
*/
function postValidate() {
global $default;
$oDocument =& $this->aInfo['document'];
$aMeta = & $this->aInfo['aOptions'];
$iDocId = $oDocument->getID();
// get tag id from document_fields table where name = Tag
$sQuery = 'SELECT df.id AS id FROM document_fields AS df ' .
'WHERE df.name = \'Tag\'';
$sTags = DBUtil::getOneResultKey(array($sQuery), 'id');
if (PEAR::isError($sTags)) {
// XXX: log error
return false;
}
$tagString = '';
// add tags
if ($sTags) {
if (count($aMeta['metadata']) > 0)
{
foreach($aMeta['metadata'] as $aMetaData)
{
$oProxy = $aMetaData[0];
if($oProxy->iId == $sTags)
{
$tagString = $aMetaData[1];
}
}
}
if($tagString != ''){
$words_table = KTUtil::getTableName('tag_words');
$tagString = str_replace(' ', ' ', $tagString);
$tags = explode(',',$tagString);
$aTagIds = array();
foreach($tags as $sTag)
{
$sTag = trim($sTag);
$sTag = utf8_decode($sTag);
$sTag = mb_strtolower($sTag);
$sTag = utf8_encode($sTag);
$res = DBUtil::getOneResult(array("SELECT id FROM $words_table WHERE tag = ?", array($sTag)));
if (PEAR::isError($res)) {
return $res;
}
if (is_null($res))
{
$id = & DBUtil::autoInsert($words_table, array('tag'=>$sTag));
$aTagIds[$sTag] = $id;
}
else
{
$aTagIds[$sTag] = $res['id'];
}
}
$doc_tags = KTUtil::getTableName('document_tags');
foreach($aTagIds as $sTag=>$tagid)
{
DBUtil::autoInsert($doc_tags, array(
'document_id'=>$iDocId,
'tag_id'=>$tagid),
array('noid'=>true));
}
}
}
}
}
/**
* Trigger for document edit (postValidate)
*
*/
class KTEditDocumentTrigger {
var $aInfo = null;
/**
* function to set the info for the trigger
*
* @param array $aInfo
*/
function setInfo(&$aInfo) {
$this->aInfo =& $aInfo;
}
/**
* postValidate method for trigger
*
* @return unknown
*/
function postValidate() {
global $default;
$oDocument =& $this->aInfo['document'];
$aMeta = & $this->aInfo['aOptions'];
// get document id
$iDocId = $oDocument->getID();
// get all tags that are linked to the document
$sQuery = 'SELECT tw.id FROM tag_words AS tw, document_tags AS dt, documents AS d ' .
'WHERE dt.tag_id = tw.id ' .
'AND dt.document_id = d.id ' .
'AND d.id = ?';
$aParams = array($iDocId);
$aTagId = DBUtil::getResultArray(array($sQuery, $aParams));
if (PEAR::isError($aTagId)) {
// XXX: log error
return false;
}
// if there are any related tags proceed
if ($aTagId) {
// delete all entries from document_tags table for the document
$sQuery = 'DELETE FROM document_tags ' .
'WHERE document_id = ?';
$aParams = array($iDocId);
$removed = DBUtil::runQuery(array($sQuery, $aParams));
if (PEAR::isError($removed)) {
// XXX: log error
return false;
}
}
// proceed to add the tags as per normal
$sQuery = 'SELECT df.id AS id FROM document_fields AS df ' .
'WHERE df.name = \'Tag\'';
$sTags = DBUtil::getOneResultKey(array($sQuery), 'id');
if (PEAR::isError($sTags)) {
// XXX: log error
return false;
}
$tagString = '';
if ($sTags) {
// it is actually correct using $aMeta. It is different to the add trigger above...
if (count($aMeta) > 0)
{
foreach($aMeta as $aMetaData)
{
$oProxy = $aMetaData[0];
if($oProxy->iId == $sTags)
{
$tagString = $aMetaData[1];
break;
}
}
}
if($tagString != ''){
$words_table = KTUtil::getTableName('tag_words');
$tagString = str_replace(' ', ' ', $tagString);
$tags = explode(',',$tagString);
$aTagIds = array();
foreach($tags as $sTag)
{
$sTag = trim($sTag);
$sTag = utf8_decode($sTag);
$sTag = mb_strtolower($sTag);
$sTag = utf8_encode($sTag);
$res = DBUtil::getOneResult(array("SELECT id FROM $words_table WHERE tag = ?", array($sTag)));
if (PEAR::isError($res)) {
return $res;
}
if (is_null($res))
{
$id = & DBUtil::autoInsert($words_table, array('tag'=>$sTag));
$aTagIds[$sTag] = $id;
}
else
{
$aTagIds[$sTag] = $res['id'];
}
}
$doc_tags = KTUtil::getTableName('document_tags');
foreach($aTagIds as $sTag=>$tagid)
{
DBUtil::autoInsert($doc_tags, array(
'document_id'=>$iDocId,
'tag_id'=>$tagid),
array('noid'=>true));
}
}
}
}
}
?>