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Hibernate example source code file (AccessOptimizerAdapter.java)

This example Hibernate source code file (AccessOptimizerAdapter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Hibernate tags/keywords

accessoptimizeradapter, bulkaccessor, bulkaccessor, bulkaccessorexception, bulkaccessorexception, class, io, javassist, object, property_set_exception, propertyaccessexception, propertyaccessexception, string, string, throwable

The Hibernate AccessOptimizerAdapter.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2008-2011, 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.bytecode.internal.javassist;

import java.io.Serializable;

import org.hibernate.PropertyAccessException;
import org.hibernate.bytecode.spi.ReflectionOptimizer;

/**
 * The {@link ReflectionOptimizer.AccessOptimizer} implementation for Javassist
 * which simply acts as an adapter to the {@link BulkAccessor} class.
 *
 * @author Steve Ebersole
 */
public class AccessOptimizerAdapter implements ReflectionOptimizer.AccessOptimizer, Serializable {

	public static final String PROPERTY_GET_EXCEPTION =
		"exception getting property value with Javassist (set hibernate.bytecode.use_reflection_optimizer=false for more info)";

	public static final String PROPERTY_SET_EXCEPTION =
		"exception setting property value with Javassist (set hibernate.bytecode.use_reflection_optimizer=false for more info)";

	private final BulkAccessor bulkAccessor;
	private final Class mappedClass;

	public AccessOptimizerAdapter(BulkAccessor bulkAccessor, Class mappedClass) {
		this.bulkAccessor = bulkAccessor;
		this.mappedClass = mappedClass;
	}

	public String[] getPropertyNames() {
		return bulkAccessor.getGetters();
	}

	public Object[] getPropertyValues(Object object) {
		try {
			return bulkAccessor.getPropertyValues( object );
		}
		catch ( Throwable t ) {
			throw new PropertyAccessException(
					t,
			        PROPERTY_GET_EXCEPTION,
			        false,
			        mappedClass,
			        getterName( t, bulkAccessor )
				);
		}
	}

	public void setPropertyValues(Object object, Object[] values) {
		try {
			bulkAccessor.setPropertyValues( object, values );
		}
		catch ( Throwable t ) {
			throw new PropertyAccessException(
					t,
			        PROPERTY_SET_EXCEPTION,
			        true,
			        mappedClass,
			        setterName( t, bulkAccessor )
			);
		}
	}

	private static String setterName(Throwable t, BulkAccessor accessor) {
		if (t instanceof BulkAccessorException ) {
			return accessor.getSetters()[ ( (BulkAccessorException) t ).getIndex() ];
		}
		else {
			return "?";
		}
	}

	private static String getterName(Throwable t, BulkAccessor accessor) {
		if (t instanceof BulkAccessorException ) {
			return accessor.getGetters()[ ( (BulkAccessorException) t ).getIndex() ];
		}
		else {
			return "?";
		}
	}
}

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