noopaccessor.java

hibernate-distribution-3.3.1.GA-dist.zip源码

/*
 * 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.property;

import java.lang.reflect.Method;
import java.util.Map;

import org.hibernate.HibernateException;
import org.hibernate.PropertyNotFoundException;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.engine.SessionImplementor;

/**
 * Used to declare properties not represented at the pojo level
 * 
 * @author Michael Bartmann
 */
public class NoopAccessor implements PropertyAccessor {

	public Getter getGetter(Class arg0, String arg1) throws PropertyNotFoundException {
		return new NoopGetter();
	}

	public Setter getSetter(Class arg0, String arg1) throws PropertyNotFoundException {
		return new NoopSetter();
	}

	/**
	 * A Getter which will always return null. It should not be called anyway.
	 */
	private static class NoopGetter implements Getter {

		/**
		 * @return always null
		 */
		public Object get(Object target) throws HibernateException {
			return null;
		}

		public Object getForInsert(Object target, Map map, SessionImplementor arg1)
				throws HibernateException {
			return null;
		}

		public Class getReturnType() {
			return Object.class;
		}

		public String getMethodName() {
			return null;
		}

		public Method getMethod() {
			return null;
		}

	}

	/**
	 * A Setter which will just do nothing.
	 */
	private static class NoopSetter implements Setter {

		public void set(Object target, Object value, SessionFactoryImplementor arg2)
				throws HibernateException {
			// do not do anything
		}

		public String getMethodName() {
			return null;
		}

		public Method getMethod() {
			return null;
		}

	}
}