DataStore.java

/*
 * Copyright 1999-2011 Alibaba Group.
 *
 *  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.alibaba.dubbo.common.store;

import com.alibaba.dubbo.common.extension.SPI;

import java.util.Map;

/**
 * @author <a href="mailto:gang.lvg@alibaba-inc.com">kimi</a>
 */
@SPI("simple")
public interface DataStore {

    /**
     * return a snapshot value of componentName
     */
    Map<String,Object> get(String componentName);

    Object get(String componentName, String key);

    void put(String componentName, String key, Object value);

    void remove(String componentName, String key);

}