framework/caching/dependencies/CCacheDependency.php
private function getHash()
	{
		if($this->_hash===null)
			$this->_hash=sha1(serialize($this));
		return $this->_hash;
	}
private function getHash()
	{
		if($this->_hash===null)
			$this->_hash=sha1(serialize($this));
		return $this->_hash;
	}
private function getHash ( ) { if ( $ this -> _hash === null ) $ this -> _hash = sha1 ( serialize ( $ this ) ) ; return $ this -> _hash ; }
Generates a unique hash that identifies this cache dependency.
@return string the hash for this cache dependency
Generates a unique hash that identifies this cache dependency .