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<?php
/**
*
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @version $Id$
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TCachingStatement implements IMappedStatement
{
private $_mappedStatement;
public function __construct(TMappedStatement $statement)
{
$this->_mappedStatement = $statement;
}
public function getID()
{
return $this->_mappedStatement->getID();
}
public function getStatement()
{
return $this->_mappedStatement->getStatement();
}
public function getSqlMap()
{
return $this->_mappedStatement->getSqlMap();
}
public function executeQueryForMap($connection, $parameter,
$keyProperty, $valueProperty=null, $delegate=null)
{
$sql = $this->createCommand($connection, $parameter);
$key = $this->getCacheKey(array($sql, $keyProperty, $valueProperty));
$map = $this->getStatement()->getCache()->get($key);
if(is_null($map))
{
$map = $this->_mappedStatement->runQueryForMap(
$connection, $parameter, $sql, $keyProperty, $valueProperty, $delegate);
$this->getStatement()->getCache()->set($key, $map);
}
return $map;
}
public function executeUpdate($connection, $parameter)
{
return $this->_mappedStatement->executeUpdate($connection, $parameter);
}
public function executeInsert($connection, $parameter)
{
return $this->executeInsert($connection, $parameter);
}
public function executeQueryForList($connection, $parameter,
$result, $skip=-1, $max=-1, $delegate=null)
{
$sql = $this->createCommand($connection, $parameter);
$key = $this->getCacheKey(array($sql, $skip, $max));
$list = $this->getStatement()->getCache()->get($key);
if(is_null($list))
{
$list = $this->_mappedStatement->runQueryForList(
$connection, $parameter, $sql, $result, $skip, $max, $delegate);
$this->getStatement()->getCache()->set($key, $list);
}
return $list;
}
public function executeQueryForObject($connection, $parameter, $result)
{
$sql = $this->createCommand($connection, $parameter);
$key = $this->getCacheKey($sql);
$object = $this->getStatement()->getCache()->get($key);
if(is_null($object))
{
$object = $this->_mappedStatement->runQueryForObject(
$connection, $sql, $result);
$this->getStatement()->getCache()->set($key, $object);
}
return $object;
}
protected function getCacheKey($object)
{
$cacheKey = new TSqlMapCacheKey($object);
return $cacheKey->getHash();
}
protected function createCommand($connection, $parameter)
{
return $this->_mappedStatement->getCommand()->create(
$connection, $this->getStatement(), $parameter);
}
}
?>
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