instantiationoptimizeradapter.java

来自「一个Java持久层类库」· Java 代码 · 共 33 行

package org.hibernate.bytecode.javassist;

import org.hibernate.bytecode.ReflectionOptimizer;
import org.hibernate.InstantiationException;

import java.io.Serializable;

/**
 * The {@link ReflectionOptimizer.InstantiationOptimizer} implementation for Javassist
 * which simply acts as an adpater to the {@link FastClass} class.
 *
 * @author Steve Ebersole
 */
public class InstantiationOptimizerAdapter implements ReflectionOptimizer.InstantiationOptimizer, Serializable {
	private final 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 Javassist optimizer: ",
			        fastClass.getJavaClass(), t
			);
		}
	}
}