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/*******************************************************************************
 * * Copyright 2012 Impetus Infotech.
 *  *
 *  * 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.
 ******************************************************************************/
package com.impetus.kundera.cache;

/**
 * Implementors define a caching algorithm. All implementors must be
 * threadsafe.
 * 
 * @author animesh.kumar
 */
public interface Cache extends javax.persistence.Cache
{

    /**
     * Size.
     * 
     * @return the int
     */
    int size();

    /**
     * Get an item from the cache.
     * 
     * @param key
     *            the key
     * @return the object
     */
    Object get(Object key);

    /**
     * Add an item to the cache.
     * 
     * @param key
     *            the key
     * @param value
     *            the value
     */
    void put(Object key, Object value);

}