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<?php
require_once(dirname(__FILE__).'/TSqlMapper.php');
/**
* A DataMapper client class that can load a cached SqlMapper. Give the configuration
* file, it looks for a .cache file containing serialized TSqlMapClient instance to
* load. Usage:
*
* <code>
* $client = new TSqlMapClient;
* $sqlmap = $client->configure($configFile, true); //load from cache.
* $products = $sqlMap->queryForList('statementName');
* </code>
*
* To save the TSqlMapper instance to cache for later usage, call
* cacheConfiguration().
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @version $Id$
* @package System.DataAccess.SQLMap
* @since 3.0
*/
class TSqlMapClient
{
private $_mapper;
private $_cache;
public function configure($configFile, $loadFromCache=false)
{
if(is_null($this->_mapper))
$this->initMapper($configFile, $loadFromCache);
return $this->_mapper;
}
public function getInstance()
{
return $this->_mapper;
}
public function cacheConfiguration()
{
if(!is_null($this->_mapper) && $this->_cache !== false)
{
if(!is_file($this->_cache))
{
file_put_contents($this->_cache,serialize($this->_mapper));
return true;
}
}
return false;
}
protected function initMapper($file=null,$loadFromCache=false)
{
$this->_cache = $this->getCacheFile($file);
if($loadFromCache && $this->_cache !== false && is_file($this->_cache))
{
$this->_mapper = unserialize(file_get_contents($this->_cache));
}
else
{
$builder = new TDomSqlMapBuilder();
$this->_mapper = $builder->configure($file);
}
}
protected function getCacheFile($file)
{
$path = realpath($file);
if($path !== false)
return substr($path,0, strrpos($path,'.')).'.cache';
else
return false;
}
}
?>
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