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/*
 * RED5 Open Source Media Server - https://github.com/Red5/
 * 
 * Copyright 2006-2016 by respective authors (see below). 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.
 */

package org.red5.server.api.persistence;

import java.util.Collection;
import java.util.Set;

/**
 * Storage for persistent objects.
 * 
 * @author The Red5 Project
 * @author Luke Hubbard ([email protected])
 * @author Joachim Bauch ([email protected])
 */

public interface IPersistenceStore {

    /**
     * Persist given object.
     * 
     * @param obj
     *            Object to store
     * @return 
     * true
     * 
* * on success, * *
     * false
     * 
* * otherwise */ public boolean save(IPersistable obj); /** * Load a persistent object with the given name. The object must provide either a constructor that takes an input stream as only parameter or an empty constructor so it can be loaded from the persistence store. * * @param name * the name of the object to load * @return The loaded object or * *
     * null
     * 
* * if no such object was found */ public IPersistable load(String name); /** * Load state of an already instantiated persistent object. * * @param obj * the object to initializ * @return true if the object was initialized, false otherwise */ public boolean load(IPersistable obj); /** * Delete the passed persistent object. * * @param obj * the object to delete * @return
     * true
     * 
* * if object was persisted and thus can be removed, * *
     * false
     * 
* * otherwise */ public boolean remove(IPersistable obj); /** * Delete the persistent object with the given name. * * @param name * the name of the object to delete * @return
     * true
     * 
* * if object was persisted and thus can be removed, * *
     * false
     * 
* * otherwise */ public boolean remove(String name); /** * Return iterator over the names of all already loaded objects in the storage. * * @return Set of all object names */ public Set getObjectNames(); /** * Return iterator over the already loaded objects in the storage. * * @return Set of all objects */ public Collection getObjects(); /** * Notify store that it's being closed. This allows the store to write any pending objects to disk. */ public void notifyClose(); }




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