/***
 * Copyright (c) 2009 Caelum - www.caelum.com.br/opensource 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 br.com.caelum.vraptor.proxy;

import java.util.concurrent.ConcurrentMap;

import javax.enterprise.context.ApplicationScoped;

import org.objenesis.Objenesis;
import org.objenesis.ObjenesisStd;
import org.objenesis.instantiator.ObjectInstantiator;

import com.google.common.collect.MapMaker;

/**
 * Objenesis implementation for {@link InstanceCreator}.
 * 
 * @author Otávio Scherer Garcia
 * @since 3.3.1
 */
@ApplicationScoped
public class ObjenesisInstanceCreator implements InstanceCreator {
	
	// TODO use cache API
	private final ConcurrentMap<Class<?>, ObjectInstantiator> CACHE = new MapMaker().makeMap();
	private final Objenesis objenesis = new ObjenesisStd();

	public <T> T instanceFor(Class<T> clazz) {
		ObjectInstantiator instantiator = CACHE.get(clazz);
		if (instantiator == null) {
			instantiator = objenesis.getInstantiatorOf(clazz);
			CACHE.put(clazz, instantiator);
		}
		
		return clazz.cast(instantiator.newInstance());
	}
}

/***
 * Copyright (c) 2009 Caelum - www.caelum.com.br/opensource 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 br.com.caelum.vraptor.proxy;

import java.util.concurrent.ConcurrentMap;

import javax.enterprise.context.ApplicationScoped;

import org.objenesis.Objenesis;
import org.objenesis.ObjenesisStd;
import org.objenesis.instantiator.ObjectInstantiator;

import com.google.common.collect.MapMaker;

/**
 * Objenesis implementation for {@link InstanceCreator}.
 * 
 * @author Otávio Scherer Garcia
 * @since 3.3.1
 */
@ApplicationScoped
public class ObjenesisInstanceCreator implements InstanceCreator {
	
	// TODO use cache API
	private final ConcurrentMap<Class<?>, ObjectInstantiator> cache = new MapMaker().makeMap();
	private final Objenesis objenesis = new ObjenesisStd();

	public <T> T instanceFor(Class<T> clazz) {
		ObjectInstantiator instantiator = cache.get(clazz);
		if (instantiator == null) {
			instantiator = objenesis.getInstantiatorOf(clazz);
			cache.put(clazz, instantiator);
		}
		
		return clazz.cast(instantiator.newInstance());
	}
}

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