public static function &parseSql($sStatement, $sParserName = 'statement', $bReturnFirstTree = false)
{
$aCache = Cache::highSpeed();
$sSqlCacheKey = '/db/sql/raw/' . md5($sStatement);
// 优先从缓存中查找
if (!($arrTrees = $aCache->item($sSqlCacheKey))) {
if (!($arrTrees =& BaseParserFactory::singleton()->create(true, null, $sParserName)->parse($sStatement, $bReturnFirstTree))) {
$null = null;
return $null;
}
// 写入缓存
$aCache->setItem($sSqlCacheKey, $arrTrees);
}
return $arrTrees;
}
/**
*
* @return ICache or null when cache didn't set
*/
public function cache()
{
return Cache::singleton();
}