2 * Copyright 2005-2010 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.cache;
18 import java.io.Serializable;
21 * The <code>Cache</code> interface represents a cache intended for
22 * application-level caching. In some circumstances it is more optimal to
23 * implement caching directly in the code instead of relying on Hibernate
24 * caching methods. This interface abstracts from the used cache implementation.
25 * Cache implementations must be thread-safe.
27 public interface Cache<KeyType extends Serializable, ValueType extends Serializable> {
29 * Adds a key-value pair to the cache.
36 void put(KeyType aKey, ValueType aValue);
39 * Retrieves a value from the cache.
44 * @return Value or null if expired..
46 ValueType get(KeyType aKey);
49 * Removes an entry from the cache.
52 * Key to remove the entry for.
54 void remove(KeyType aKey);
57 * Removes all entries from the cache.