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<?php
/**
* TActiveRecordHasOne class file.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2007 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Id$
* @package System.Data.ActiveRecord.Relations
*/
/**
* Loads base active record relationship class.
*/
Prado::using('System.Data.ActiveRecord.Relations.TActiveRecordRelation');
/**
* TActiveRecordHasOne models the object relationship that a record (the source object)
* property is an instance of foreign record object having a foreign key
* related to the source object.
*
*
*
*
* @author Wei Zhuo <weizho[at]gmail[dot]com>
* @version $Id$
* @package System.Data.ActiveRecord.Relations
* @since 3.1
*/
class TActiveRecordHasOne extends TActiveRecordRelation
{
/**
* Get the foreign key index values from the results and make calls to the
* database to find the corresponding foreign objects.
* @param array original results.
*/
protected function collectForeignObjects(&$results)
{
$fkObject = $this->getContext()->getForeignRecordFinder();
$fkeys = $this->findForeignKeys($fkObject, $this->getSourceRecord());
$properties = array_values($fkeys);
$fields = array_keys($fkeys);
$indexValues = $this->getIndexValues($properties, $results);
$fkObjects = $this->findForeignObjects($fields,$indexValues);
$this->populateResult($results,$properties,$fkObjects,$fields);
}
/**
* Sets the foreign objects to the given property on the source object.
* @param TActiveRecord source object.
* @param array foreign objects.
*/
protected function setObjectProperty($source, $properties, &$collections)
{
$hash = $this->getObjectHash($source, $properties);
$prop = $this->getContext()->getProperty();
if(isset($collections[$hash]) && count($collections[$hash]) > 0)
{
if(count($collections[$hash]) > 1)
throw new TActiveRecordException('ar_belongs_to_multiple_result');
$source->{$prop} = $collections[$hash][0];
}
}
}
?>
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