instantiationoptimizeradapter.java

来自「hibernate-distribution-3.3.1.GA-dist.zip」· Java 代码 · 共 71 行

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
 *
 * 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.bytecode.cglib;

import org.hibernate.bytecode.ReflectionOptimizer;
import org.hibernate.repackage.cglib.reflect.FastClass;
import org.hibernate.InstantiationException;

import java.io.Serializable;
import java.io.ObjectOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;

/**
 * The {@link ReflectionOptimizer.InstantiationOptimizer} implementation for CGLIB
 * which simply acts as an adpater to the {@link FastClass} class.
 *
 * @author Steve Ebersole
 */
public class InstantiationOptimizerAdapter implements ReflectionOptimizer.InstantiationOptimizer, Serializable {
	private FastClass fastClass;

	public InstantiationOptimizerAdapter(FastClass fastClass) {
		this.fastClass = fastClass;
	}

	public Object newInstance() {
		try {
			return fastClass.newInstance();
		}
		catch ( Throwable t ) {
			throw new InstantiationException(
					"Could not instantiate entity with CGLIB optimizer: ",
			        fastClass.getJavaClass(),
			        t
			);
		}
	}

	private void writeObject(ObjectOutputStream out) throws IOException {
		out.writeObject( fastClass.getJavaClass() );
	}

	private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
		Class beanClass = ( Class ) in.readObject();
		fastClass = FastClass.create( beanClass );
	}
}