addValue() protected method

Stores a value identified by a key into cache if the cache does not contain this key.

This is the implementation of the method declared in the parent class.

protected boolean addValue ( $key, $value, $duration )
$key	string	The key identifying the value to be cached
$value	mixed	The value to be cached. Most often it's a string. If you have disabled $serializer, it could be something else.
$duration	integer	The number of seconds in which the cached value will expire. 0 means never expire.
return	boolean	True if the value is successfully stored into cache, false otherwise

addValues() protected method

Adds multiple key-value pairs to cache.

The default implementation calls addValue() multiple times add values one by one. If the underlying cache storage supports multiadd, this method should be overridden to exploit that feature.

protected array addValues ( $data, $duration )
$data	array	Array where key corresponds to cache key while value is the value stored
$duration	integer	The number of seconds in which the cached values will expire. 0 means never expire.
return	array	Array of failed keys

deleteValue() protected method

Deletes a value with the specified key from cache This is the implementation of the method declared in the parent class.

protected boolean deleteValue ( $key )
$key	string	The key of the value to be deleted
return	boolean	If no error happens during deletion

exists() public method

Checks whether a specified key exists in the cache.

This can be faster than getting the value from the cache if the data is big. Note that this method does not check whether the dependency associated with the cached data, if there is any, has changed. So a call to get() may return false while exists returns true.

public boolean exists ( $key )
$key	mixed	A key identifying the cached value. This can be a simple string or a complex data structure consisting of factors representing the key.
return	boolean	True if a value exists in cache, false if the value is not in the cache or expired.

flushValues() protected method

Deletes all values from cache.

This is the implementation of the method declared in the parent class.

protected boolean flushValues ( )
return	boolean	Whether the flush operation was successful.

getValue() protected method

Retrieves a value from cache with a specified key.

This is the implementation of the method declared in the parent class.

protected string|boolean getValue ( $key )
$key	string	A unique key identifying the cached value
return	string|boolean	The value stored in cache, false if the value is not in the cache or expired.

getValues() protected method

Retrieves multiple values from cache with the specified keys.

protected array getValues ( $keys )
$keys	array	A list of keys identifying the cached values
return	array	A list of cached values indexed by the keys

setValue() protected method

Stores a value identified by a key in cache.

This is the implementation of the method declared in the parent class.

protected boolean setValue ( $key, $value, $duration )
$key	string	The key identifying the value to be cached
$value	mixed	The value to be cached. Most often it's a string. If you have disabled $serializer, it could be something else.
$duration	integer	The number of seconds in which the cached value will expire. 0 means never expire.
return	boolean	True if the value is successfully stored into cache, false otherwise

setValues() protected method

Stores multiple key-value pairs in cache.

protected array setValues ( $data, $duration )
$data	array	Array where key corresponds to cache key while value is the value stored
$duration	integer	The number of seconds in which the cached values will expire. 0 means never expire.
return	array	Array of failed keys