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JFPopularityCache.h
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JFPopularityCache.h
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//
// JFPopularityCache.h
// JFCommon
//
// Created by Jason Fuerstenberg on 2010/04/26.
// Copyright 2010 Jason Fuerstenberg. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#import <Foundation/Foundation.h>
#import "JFPopularityCacheable.h"
// The default max capacity
#define JFPopularityCacheDefaultMaxCapacity 10
/*
* The popularity cache.
* Objects fall out of the cache from the rear when the object count exceeds the maximum capacity.
* Objects that are just added are considered popular and are pushed to the front of the cache.
*/
@interface JFPopularityCache : NSObject {
// The cache's maximum capacity.
NSUInteger _maxCapacity;
// The inner cache dictionary.
NSMutableDictionary *_cache;
// The popularity rank.
NSMutableArray *_popularity;
}
#pragma mark - Properties
@property (nonatomic, readonly) NSDictionary *cache;
#pragma mark - Methods
- (void) setMaxCapacity: (NSUInteger) maxCapacity;
- (NSUInteger) maxCapacity;
- (NSUInteger) objectCount;
- (void) clear;
- (id) addObject: (id) object withKey: (NSString *) key;
- (id) removeObjectWithKey: (NSString *) key;
- (id) removeLastObject;
- (BOOL) containsObject: (id) object;
- (id) objectWithKey: (NSString *) key;
@end