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<?php
/**
* @version $Id: table.php 14401 2010-01-26 14:10:00Z louis $
* @package Joomla.Framework
* @subpackage Table
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
/**
* Abstract Table class
*
* Parent classes to all tables.
*
* @abstract
* @package Joomla.Framework
* @subpackage Table
* @since 1.0
* @tutorial Joomla.Framework/jtable.cls
*/
class JTable extends JObject
{
/**
* Name of the table in the db schema relating to child class
*
* @var string
* @access protected
*/
var $_tbl = '';
/**
* Name of the primary key field in the table
*
* @var string
* @access protected
*/
var $_tbl_key = '';
/**
* Database connector
*
* @var JDatabase
* @access protected
*/
var $_db = null;
/**
* Object constructor to set table and key field
*
* Can be overloaded/supplemented by the child class
*
* @access protected
* @param string $table name of the table in the db schema relating to child class
* @param string $key name of the primary key field in the table
* @param object $db JDatabase object
*/
function __construct( $table, $key, &$db )
{
$this->_tbl = $table;
$this->_tbl_key = $key;
$this->_db =& $db;
}
/**
* Returns a reference to the a Table object, always creating it
*
* @param type $type The table type to instantiate
* @param string $prefix A prefix for the table class name. Optional.
* @param array $options Configuration array for model. Optional.
* @return database A database object
* @since 1.5
*/
function &getInstance( $type, $prefix = 'JTable', $config = array() )
{
$false = false;
$type = preg_replace('/[^A-Z0-9_\.-]/i', '', $type);
$tableClass = $prefix.ucfirst($type);
if (!class_exists( $tableClass ))
{
jimport('joomla.filesystem.path');
if($path = JPath::find(JTable::addIncludePath(), strtolower($type).'.php'))
{
require_once $path;
if (!class_exists( $tableClass ))
{
JError::raiseWarning( 0, 'Table class ' . $tableClass . ' not found in file.' );
return $false;
}
}
else
{
JError::raiseWarning( 0, 'Table ' . $type . ' not supported. File not found.' );
return $false;
}
}
//Make sure we are returning a DBO object
if (array_key_exists('dbo', $config)) {
$db =& $config['dbo'];
} else {
$db = & JFactory::getDBO();
}
$instance = new $tableClass($db);
//$instance->setDBO($db);
return $instance;
}
/**
* Get the internal database object
*
* @return object A JDatabase based object
*/
function &getDBO()
{
return $this->_db;
}
/**
* Set the internal database object
*
* @param object $db A JDatabase based object
* @return void
*/
function setDBO(&$db)
{
$this->_db =& $db;
}
/**
* Gets the internal table name for the object
*
* @return string
* @since 1.5
*/
function getTableName()
{
return $this->_tbl;
}
/**
* Gets the internal primary key name
*
* @return string
* @since 1.5
*/
function getKeyName()
{
return $this->_tbl_key;
}
/**
* Resets the default properties
* @return void
*/
function reset()
{
$k = $this->_tbl_key;
foreach ($this->getProperties() as $name => $value)
{
if($name != $k)
{
$this->$name = $value;
}
}
}
/**
* Binds a named array/hash to this object
*
* Can be overloaded/supplemented by the child class
*
* @access public
* @param $from mixed An associative array or object
* @param $ignore mixed An array or space separated list of fields not to bind
* @return boolean
*/
function bind( $from, $ignore=array() )
{
$fromArray = is_array( $from );
$fromObject = is_object( $from );
if (!$fromArray && !$fromObject)
{
$this->setError( get_class( $this ).'::bind failed. Invalid from argument' );
return false;
}
if (!is_array( $ignore )) {
$ignore = explode( ' ', $ignore );
}
foreach ($this->getProperties() as $k => $v)
{
// internal attributes of an object are ignored
if (!in_array( $k, $ignore ))
{
if ($fromArray && isset( $from[$k] )) {
$this->$k = $from[$k];
} else if ($fromObject && isset( $from->$k )) {
$this->$k = $from->$k;
}
}
}
return true;
}
/**
* Loads a row from the database and binds the fields to the object properties
*
* @access public
* @param mixed Optional primary key. If not specifed, the value of current key is used
* @return boolean True if successful
*/
function load( $oid=null )
{
$k = $this->_tbl_key;
if ($oid !== null) {
$this->$k = $oid;
}
$oid = $this->$k;
if ($oid === null) {
return false;
}
$this->reset();
$db =& $this->getDBO();
$query = 'SELECT *'
. ' FROM '.$this->_tbl
. ' WHERE '.$this->_tbl_key.' = '.$db->Quote($oid);
$db->setQuery( $query );
if ($result = $db->loadAssoc( )) {
return $this->bind($result);
}
else
{
$this->setError( $db->getErrorMsg() );
return false;
}
}
/**
* Generic check method
*
* Can be overloaded/supplemented by the child class
*
* @access public
* @return boolean True if the object is ok
*/
function check()
{
return true;
}
/**
* Inserts a new row if id is zero or updates an existing row in the database table
*
* Can be overloaded/supplemented by the child class
*
* @access public
* @param boolean If false, null object variables are not updated
* @return null|string null if successful otherwise returns and error message
*/
function store( $updateNulls=false )
{
$k = $this->_tbl_key;
if( $this->$k)
{
$ret = $this->_db->updateObject( $this->_tbl, $this, $this->_tbl_key, $updateNulls );
}
else
{
$ret = $this->_db->insertObject( $this->_tbl, $this, $this->_tbl_key );
}
if( !$ret )
{
$this->setError(get_class( $this ).'::store failed - '.$this->_db->getErrorMsg());
return false;
}
else
{
return true;
}
}
/**
* Description
*
* @access public
* @param $dirn
* @param $where
*/
function move( $dirn, $where='' )
{
if (!in_array( 'ordering', array_keys($this->getProperties())))
{
$this->setError( get_class( $this ).' does not support ordering' );
return false;
}
$k = $this->_tbl_key;
$sql = "SELECT $this->_tbl_key, ordering FROM $this->_tbl";
if ($dirn < 0)
{
$sql .= ' WHERE ordering < '.(int) $this->ordering;
$sql .= ($where ? ' AND '.$where : '');
$sql .= ' ORDER BY ordering DESC';
}
else if ($dirn > 0)
{
$sql .= ' WHERE ordering > '.(int) $this->ordering;
$sql .= ($where ? ' AND '. $where : '');
$sql .= ' ORDER BY ordering';
}
else
{
$sql .= ' WHERE ordering = '.(int) $this->ordering;
$sql .= ($where ? ' AND '.$where : '');
$sql .= ' ORDER BY ordering';
}
$this->_db->setQuery( $sql, 0, 1 );
$row = null;
$row = $this->_db->loadObject();
if (isset($row))
{
$query = 'UPDATE '. $this->_tbl
. ' SET ordering = '. (int) $row->ordering
. ' WHERE '. $this->_tbl_key .' = '. $this->_db->Quote($this->$k)
;
$this->_db->setQuery( $query );
if (!$this->_db->query())
{
$err = $this->_db->getErrorMsg();
JError::raiseError( 500, $err );
}
$query = 'UPDATE '.$this->_tbl
. ' SET ordering = '.(int) $this->ordering
. ' WHERE '.$this->_tbl_key.' = '.$this->_db->Quote($row->$k)
;
$this->_db->setQuery( $query );
if (!$this->_db->query())
{
$err = $this->_db->getErrorMsg();
JError::raiseError( 500, $err );
}
$this->ordering = $row->ordering;
}
else
{
$query = 'UPDATE '. $this->_tbl
. ' SET ordering = '.(int) $this->ordering
. ' WHERE '. $this->_tbl_key .' = '. $this->_db->Quote($this->$k)
;
$this->_db->setQuery( $query );
if (!$this->_db->query())
{
$err = $this->_db->getErrorMsg();
JError::raiseError( 500, $err );
}
}
return true;
}
/**
* Returns the ordering value to place a new item last in its group
*
* @access public
* @param string query WHERE clause for selecting MAX(ordering).
*/
function getNextOrder ( $where='' )
{
if (!in_array( 'ordering', array_keys($this->getProperties()) ))
{
$this->setError( get_class( $this ).' does not support ordering' );
return false;
}
$query = 'SELECT MAX(ordering)' .
' FROM ' . $this->_tbl .
($where ? ' WHERE '.$where : '');
$this->_db->setQuery( $query );
$maxord = $this->_db->loadResult();
if ($this->_db->getErrorNum())
{
$this->setError($this->_db->getErrorMsg());
return false;
}
return $maxord + 1;
}
/**
* Compacts the ordering sequence of the selected records
*
* @access public
* @param string Additional where query to limit ordering to a particular subset of records
*/
function reorder( $where='' )
{
$k = $this->_tbl_key;
if (!in_array( 'ordering', array_keys($this->getProperties() ) ))
{
$this->setError( get_class( $this ).' does not support ordering');
return false;
}
if ($this->_tbl == '#__content_frontpage')
{
$order2 = ", content_id DESC";
}
else
{
$order2 = "";
}
$query = 'SELECT '.$this->_tbl_key.', ordering'
. ' FROM '. $this->_tbl
. ' WHERE ordering >= 0' . ( $where ? ' AND '. $where : '' )
. ' ORDER BY ordering'.$order2
;
$this->_db->setQuery( $query );
if (!($orders = $this->_db->loadObjectList()))
{
$this->setError($this->_db->getErrorMsg());
return false;
}
// compact the ordering numbers
for ($i=0, $n=count( $orders ); $i < $n; $i++)
{
if ($orders[$i]->ordering >= 0)
{
if ($orders[$i]->ordering != $i+1)
{
$orders[$i]->ordering = $i+1;
$query = 'UPDATE '.$this->_tbl
. ' SET ordering = '. (int) $orders[$i]->ordering
. ' WHERE '. $k .' = '. $this->_db->Quote($orders[$i]->$k)
;
$this->_db->setQuery( $query);
$this->_db->query();
}
}
}
return true;
}
/**
* Generic check for whether dependancies exist for this object in the db schema
*
* can be overloaded/supplemented by the child class
*
* @access public
* @param string $msg Error message returned
* @param int Optional key index
* @param array Optional array to compiles standard joins: format [label=>'Label',name=>'table name',idfield=>'field',joinfield=>'field']
* @return true|false
*/
function canDelete( $oid=null, $joins=null )
{
$k = $this->_tbl_key;
if ($oid) {
$this->$k = intval( $oid );
}
if (is_array( $joins ))
{
$select = "$k";
$join = "";
foreach( $joins as $table )
{
$select .= ', COUNT(DISTINCT '.$table['idfield'].') AS '.$table['idfield'];
$join .= ' LEFT JOIN '.$table['name'].' ON '.$table['joinfield'].' = '.$k;
}
$query = 'SELECT '. $select
. ' FROM '. $this->_tbl
. $join
. ' WHERE '. $k .' = '. $this->_db->Quote($this->$k)
. ' GROUP BY '. $k
;
$this->_db->setQuery( $query );
if (!$obj = $this->_db->loadObject())
{
$this->setError($this->_db->getErrorMsg());
return false;
}
$msg = array();
$i = 0;
foreach( $joins as $table )
{
$k = $table['idfield'] . $i;
if ($obj->$k)
{
$msg[] = JText::_( $table['label'] );
}
$i++;
}
if (count( $msg ))
{
$this->setError("noDeleteRecord" . ": " . implode( ', ', $msg ));
return false;
}
else
{
return true;
}
}
return true;
}
/**
* Default delete method
*
* can be overloaded/supplemented by the child class
*
* @access public
* @return true if successful otherwise returns and error message
*/
function delete( $oid=null )
{
//if (!$this->canDelete( $msg ))
//{
// return $msg;
//}
$k = $this->_tbl_key;
if ($oid) {
$this->$k = intval( $oid );
}
$query = 'DELETE FROM '.$this->_db->nameQuote( $this->_tbl ).
' WHERE '.$this->_tbl_key.' = '. $this->_db->Quote($this->$k);
$this->_db->setQuery( $query );
if ($this->_db->query())
{
return true;
}
else
{
$this->setError($this->_db->getErrorMsg());
return false;
}
}
/**
* Checks out a row
*
* @access public
* @param integer The id of the user
* @param mixed The primary key value for the row
* @return boolean True if successful, or if checkout is not supported
*/
function checkout( $who, $oid = null )
{
if (!in_array( 'checked_out', array_keys($this->getProperties()) )) {
return true;
}
$k = $this->_tbl_key;
if ($oid !== null) {
$this->$k = $oid;
}
$date =& JFactory::getDate();
$time = $date->toMysql();
$query = 'UPDATE '.$this->_db->nameQuote( $this->_tbl ) .
' SET checked_out = '.(int)$who.', checked_out_time = '.$this->_db->Quote($time) .
' WHERE '.$this->_tbl_key.' = '. $this->_db->Quote($this->$k);
$this->_db->setQuery( $query );
$this->checked_out = $who;
$this->checked_out_time = $time;
return $this->_db->query();
}
/**
* Checks in a row
*
* @access public
* @param mixed The primary key value for the row
* @return boolean True if successful, or if checkout is not supported
*/
function checkin( $oid=null )
{
if (!(
in_array( 'checked_out', array_keys($this->getProperties()) ) ||
in_array( 'checked_out_time', array_keys($this->getProperties()) )
)) {
return true;
}
$k = $this->_tbl_key;
if ($oid !== null) {
$this->$k = $oid;
}
if ($this->$k == NULL) {
return false;
}
$query = 'UPDATE '.$this->_db->nameQuote( $this->_tbl ).
' SET checked_out = 0, checked_out_time = '.$this->_db->Quote($this->_db->getNullDate()) .
' WHERE '.$this->_tbl_key.' = '. $this->_db->Quote($this->$k);
$this->_db->setQuery( $query );
$this->checked_out = 0;
$this->checked_out_time = '';
return $this->_db->query();
}
/**
* Description
*
* @access public
* @param $oid
* @param $log
*/
function hit( $oid=null, $log=false )
{
if (!in_array( 'hits', array_keys($this->getProperties()) )) {
return;
}
$k = $this->_tbl_key;
if ($oid !== null) {
$this->$k = intval( $oid );
}
$query = 'UPDATE '. $this->_tbl
. ' SET hits = ( hits + 1 )'
. ' WHERE '. $this->_tbl_key .'='. $this->_db->Quote($this->$k);
$this->_db->setQuery( $query );
$this->_db->query();
$this->hits++;
}
/**
* Check if an item is checked out
*
* This function can be used as a static function too, when you do so you need to also provide the
* a value for the $against parameter.
*
* @static
* @access public
* @param integer $with The userid to preform the match with, if an item is checked out
* by this user the function will return false
* @param integer $against The userid to perform the match against when the function is used as
* a static function.
* @return boolean
*/
function isCheckedOut( $with = 0, $against = null)
{
if(isset($this) && is_a($this, 'JTable') && is_null($against)) {
$against = $this->get( 'checked_out' );
}
//item is not checked out, or being checked out by the same user
if (!$against || $against == $with) {
return false;
}
$session =& JTable::getInstance('session');
return $session->exists($against);
}
/**
* Generic save function
*
* @access public
* @param array Source array for binding to class vars
* @param string Filter for the order updating
* @param mixed An array or space separated list of fields not to bind
* @returns TRUE if completely successful, FALSE if partially or not succesful.
*/
function save( $source, $order_filter='', $ignore='' )
{
if (!$this->bind( $source, $ignore )) {
return false;
}
if (!$this->check()) {
return false;
}
if (!$this->store()) {
return false;
}
if (!$this->checkin()) {
return false;
}
if ($order_filter)
{
$filter_value = $this->$order_filter;
$this->reorder( $order_filter ? $this->_db->nameQuote( $order_filter ).' = '.$this->_db->Quote( $filter_value ) : '' );
}
$this->setError('');
return true;
}
/**
* Generic Publish/Unpublish function
*
* @access public
* @param array An array of id numbers
* @param integer 0 if unpublishing, 1 if publishing
* @param integer The id of the user performnig the operation
* @since 1.0.4
*/
function publish( $cid=null, $publish=1, $user_id=0 )
{
JArrayHelper::toInteger( $cid );
$user_id = (int) $user_id;
$publish = (int) $publish;
$k = $this->_tbl_key;
if (count( $cid ) < 1)
{
if ($this->$k) {
$cid = array( $this->$k );
} else {
$this->setError("No items selected.");
return false;
}
}
$cids = $k . '=' . implode( ' OR ' . $k . '=', $cid );
$query = 'UPDATE '. $this->_tbl
. ' SET published = ' . (int) $publish
. ' WHERE ('.$cids.')'
;
$checkin = in_array( 'checked_out', array_keys($this->getProperties()) );
if ($checkin)
{
$query .= ' AND (checked_out = 0 OR checked_out = '.(int) $user_id.')';
}
$this->_db->setQuery( $query );
if (!$this->_db->query())
{
$this->setError($this->_db->getErrorMsg());
return false;
}
if (count( $cid ) == 1 && $checkin)
{
if ($this->_db->getAffectedRows() == 1) {
$this->checkin( $cid[0] );
if ($this->$k == $cid[0]) {
$this->published = $publish;
}
}
}
$this->setError('');
return true;
}
/**
* Export item list to xml
*
* @access public
* @param boolean Map foreign keys to text values
*/
function toXML( $mapKeysToText=false )
{
$xml = '<record table="' . $this->_tbl . '"';
if ($mapKeysToText)
{
$xml .= ' mapkeystotext="true"';
}
$xml .= '>';
foreach (get_object_vars( $this ) as $k => $v)
{
if (is_array($v) or is_object($v) or $v === NULL)
{
continue;
}
if ($k[0] == '_')
{ // internal field
continue;
}
$xml .= '<' . $k . '><![CDATA[' . $v . ']]></' . $k . '>';
}
$xml .= '</record>';
return $xml;
}
/**
* Add a directory where JTable should search for table types. You may
* either pass a string or an array of directories.
*
* @access public
* @param string A path to search.
* @return array An array with directory elements
* @since 1.5
*/
function addIncludePath( $path=null )
{
static $paths;
if (!isset($paths)) {
$paths = array( dirname( __FILE__ ).DS.'table' );
}
// just force path to array
settype($path, 'array');
if (!empty( $path ) && !in_array( $path, $paths ))
{
// loop through the path directories
foreach ($path as $dir)
{
// no surrounding spaces allowed!
$dir = trim($dir);
// add to the top of the search dirs
// so that custom paths are searched before core paths
array_unshift($paths, $dir);
}
}
return $paths;
}
}