org.hibernate.cache.infinispan.util.CacheCommandFactory Maven / Gradle / Ivy

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Integration for Infinispan into Hibernate as a second-level caching service
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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2013, Red Hat Inc. or third-party contributors as
 * indicated by the @author tags or express copyright attribution
 * statements applied by the authors.  All third-party contributions are
 * distributed under license by Red Hat Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program 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 distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.hibernate.cache.infinispan.util;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import org.hibernate.cache.infinispan.impl.BaseRegion;

import org.infinispan.commands.ReplicableCommand;
import org.infinispan.commands.module.ExtendedModuleCommandFactory;
import org.infinispan.commands.remote.CacheRpcCommand;

/**
 * Command factory
 *
 * @author Galder Zamarreño
 * @since 4.0
 */
public class CacheCommandFactory implements ExtendedModuleCommandFactory {

   /**
    * Keeps track of regions to which second-level cache specific
    * commands have been plugged.
    */
	private ConcurrentMap allRegions =
			new ConcurrentHashMap();

   /**
    * Add region so that commands can be cleared on shutdown.
    *
    * @param regionName name of the region
    * @param region instance to keep track of
    */
	public void addRegion(String regionName, BaseRegion region) {
		allRegions.put( regionName, region );
	}

   /**
    * Clear all regions from this command factory.
    *
    * @param regionNames collection of regions to clear
    */
	public void clearRegions(List regionNames) {
		for ( String regionName : regionNames ) {
			allRegions.remove( regionName );
		}
	}

	@Override
	public Map> getModuleCommands() {
		final Map> map = new HashMap>( 3 );
		map.put( CacheCommandIds.EVICT_ALL, EvictAllCommand.class );
		return map;
	}

	@Override
	public CacheRpcCommand fromStream(byte commandId, Object[] args, String cacheName) {
		CacheRpcCommand c;
		switch ( commandId ) {
			case CacheCommandIds.EVICT_ALL:
				c = new EvictAllCommand( cacheName, allRegions.get( cacheName ) );
				break;
			default:
				throw new IllegalArgumentException( "Not registered to handle command id " + commandId );
		}
		c.setParameters( commandId, args );
		return c;
	}

	@Override
	public ReplicableCommand fromStream(byte commandId, Object[] args) {
		// Should not be called while this factory only
		// provides cache specific replicable commands.
		return null;
	}

}