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Hibernate example source code file (IndexPropertyAccessor.java)

This example Hibernate source code file (IndexPropertyAccessor.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

getter, getter, indexgetter, indexpropertyaccessor, indexsetter, indexsetter, map, method, object, object, propertyaccessor, reflection, setter, string, string, util

The Hibernate IndexPropertyAccessor.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2009 by Red Hat Inc and/or its affiliates or by
 * third-party contributors as indicated by either @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.property;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.util.Map;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.engine.spi.SessionImplementor;

/**
 * Represents a "back-reference" to the index of a collection.
 *
 * @author Gavin King
 */
public class IndexPropertyAccessor implements PropertyAccessor {
	private final String propertyName;
	private final String entityName;

	/**
	 * Constructs a new instance of IndexPropertyAccessor.
	 *
	 * @param collectionRole The collection role which this back ref references.
	 * @param entityName The name of the entity owning the collection.
	 */
	public IndexPropertyAccessor(String collectionRole, String entityName) {
		this.propertyName = collectionRole.substring( entityName.length()+1 );
		this.entityName = entityName;
	}

	public Setter getSetter(Class theClass, String propertyName) {
		return new IndexSetter();
	}

	public Getter getGetter(Class theClass, String propertyName) {
		return new IndexGetter();
	}


	/**
	 * The Setter implementation for index backrefs.
	 */
	public static final class IndexSetter implements Setter {
		/**
		 * {@inheritDoc}
		 */
		public Method getMethod() {
			return null;
		}

		/**
		 * {@inheritDoc}
		 */
		public String getMethodName() {
			return null;
		}

		/**
		 * {@inheritDoc}
		 */
		public void set(Object target, Object value, SessionFactoryImplementor factory) {
			// do nothing...
		}

	}


	/**
	 * The Getter implementation for index backrefs.
	 */
	public class IndexGetter implements Getter {
		public Object getForInsert(Object target, Map mergeMap, SessionImplementor session) throws HibernateException {
			if (session==null) {
				return BackrefPropertyAccessor.UNKNOWN;
			}
			else {
				return session.getPersistenceContext()
						.getIndexInOwner(entityName, propertyName, target, mergeMap);
			}
		}

		/**
		 * {@inheritDoc}
		 */
		public Object get(Object target)  {
			return BackrefPropertyAccessor.UNKNOWN;
		}

		/**
		 * {@inheritDoc}
		 */
		public Member getMember() {
			return null;
		}

		/**
		 * {@inheritDoc}
		 */
		public Method getMethod() {
			return null;
		}

		/**
		 * {@inheritDoc}
		 */
		public String getMethodName() {
			return null;
		}

		/**
		 * {@inheritDoc}
		 */
		public Class getReturnType() {
			return Object.class;
		}
	}
}

Other Hibernate examples (source code examples)

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