package org.red5.server;

/*
 * RED5 Open Source Flash Server - http://www.osflash.org/red5
 * 
 * Copyright (c) 2006-2009 by respective authors (see below). All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or modify it under the 
 * terms of the GNU Lesser General Public License as published by the Free Software 
 * Foundation; either version 2.1 of the License, or (at your option) any later 
 * version. 
 * 
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY 
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 
 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along 
 * with this library; if not, write to the Free Software Foundation, Inc., 
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
 */

import org.red5.server.api.IGlobalScope;
import org.red5.server.api.IServer;
import org.red5.server.api.persistence.IPersistenceStore;
import org.red5.server.api.persistence.PersistenceUtils;

/**
 * Global scope is a top level scope. Server instance is meant to be injected
 * with Spring before initialization (otherwise NullPointerException is thrown).
 * 
 * @see org.red5.server.api.IGlobalScope
 * @see org.red5.server.api.IScope
 */
public class GlobalScope extends Scope implements IGlobalScope {
	// Red5 Server instance
	protected IServer server;

	/**
	 * 
	 * @param persistenceClass Persistent class name
	 * @throws Exception Exception
	 */
	@Override
	public void setPersistenceClass(String persistenceClass) throws Exception {
		this.persistenceClass = persistenceClass;
		// We'll have to wait for creation of the store object
		// until all classes have been initialized.
	}

	/**
	 * Get persistence store for scope
	 * 
	 * @return Persistence store
	 */
	@Override
	public IPersistenceStore getStore() {
		if (store != null) {
			return store;
		}

		try {
			store = PersistenceUtils.getPersistenceStore(this,
					this.persistenceClass);
		} catch (Exception error) {
			log.error("Could not create persistence store.", error);
			store = null;
		}
		return store;
	}

	/**
	 * Setter for server
	 * 
	 * @param server Server
	 */
	public void setServer(IServer server) {
		this.server = server;
	}

	/** {@inheritDoc} */
	@Override
	public IServer getServer() {
		return server;
	}

	/**
	 * Register global scope in server instance, then call initialization
	 */
	public void register() {
		server.registerGlobal(this);
		init();
	}

}