ECCache
Abstract
Class used for a simple caching.
Discussion
At present the underlying mechanism is very simple: If
the object has a reference counter value of greater/equal 1 then the
object relies in the dictionary. If the counter equals 0 then the
object will be removed. Please note that the "reference counter"
mentioned here refers to cache-internal counter and not to that of
an object in general.
Methods
- -addObject
- adds an object to the cache.
- -addObject:forKey:
- adds an object to the cache.
- -allKeys
- -decrementRefCounterFor
- Decrements the internal reference counter by one of the object
identified by the given key.
- -decrementRefCounterForKey:
- Decrements the internal reference counter by one of the object
identified by the given key.
- -objectExistsForKey:
- checks wether an object exists for the given key
- -objectForKey
- get the cached object identified by the given key
- -objectForKey:incrementRefCounter:
- get the cached object identified by the given key
- -referenceCounterOfObjectForKey:
- -referenceCountOfObjectForKey
- -removeObjectForKey:
- removes the specified entry from the cache
adds an object to the cache.
See Also:
- addObject:forKey:
- addObject: (id) anObject forKey: (id <NSCopying>) aKey;
- method result
- self
adds an object to the cache.
See Also:
- addObject
- addObject: (id) anObject forKey: (id <NSCopying>) aKey;
- (id <ECIterator>) allKeys;
- method result
- iterator over all keys
Decrements the internal reference counter by one of the object
identified by the given key.
See Also:
- decrementRefCounterForKey:
- (void) decrementRefCounterForKey: (id) aKey;
Decrements the internal reference counter by one of the object
identified by the given key.
See Also:
- decrementRefCounterFor
- (void) decrementRefCounterForKey: (id) aKey;
checks wether an object exists for the given key
- (BOOL) objectExistsForKey: (id) aKey;
Parameter Descriptions
aKey
- key of the object
- method result
- YES if existent, NO otherwise
get the cached object identified by the given key
See Also:
- objectForKey:incrementRefCounter:
- objectForKey: (id) aKey incrementRefCounter: (BOOL) doIncrement;
Parameter Descriptions
doIncrement
- The internal reference count will be incremented by 1 if
this parameter equals YES
- method result
- related object or nil if not existent
get the cached object identified by the given key
See Also:
- objectForKey
- objectForKey: (id) aKey incrementRefCounter: (BOOL) doIncrement;
Parameter Descriptions
doIncrement
- The internal reference count will be incremented by 1 if
this parameter equals YES
See Also:
- referenceCountOfObjectForKey
- (unsigned int) referenceCounterOfObjectForKey: (id) aKey;
Parameter Descriptions
aKey
- key of object to look for.
See Also:
- referenceCounterOfObjectForKey:
- (unsigned int) referenceCounterOfObjectForKey: (id) aKey;
Parameter Descriptions
aKey
- key of object to look for.
- method result
- return the current reference count for the specified object. Return 0
if the object does not exist
removes the specified entry from the cache
- (void) removeObjectForKey: (id) aKey;
Parameter Descriptions
aKey
- key of the entry to be removed
Discussion
Does nothing if the element could not be found.
(Last Updated August 27, 2006)