Hibernate example source code file (ListBinder.java)

This example Hibernate source code file (ListBinder.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

collection, ejb3column, ejb3column, ejb3joincolumn, ejb3joincolumn, indexbackref, indexbackref, listbinder, mappings, override, override, simplevaluebinder, util, xclass, xproperty

The Hibernate ListBinder.java source code

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2010, 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.cfg.annotations;

import java.util.Map;
import org.hibernate.AnnotationException;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.MappingException;
import org.hibernate.annotations.OrderBy;
import org.hibernate.annotations.Sort;
import org.hibernate.annotations.common.reflection.XClass;
import org.hibernate.annotations.common.reflection.XProperty;
import org.hibernate.cfg.CollectionSecondPass;
import org.hibernate.cfg.Ejb3Column;
import org.hibernate.cfg.Ejb3JoinColumn;
import org.hibernate.cfg.Mappings;
import org.hibernate.cfg.PropertyHolder;
import org.hibernate.cfg.PropertyHolderBuilder;
import org.hibernate.cfg.SecondPass;
import org.hibernate.internal.util.StringHelper;
import org.hibernate.mapping.Collection;
import org.hibernate.mapping.IndexBackref;
import org.hibernate.mapping.List;
import org.hibernate.mapping.OneToMany;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.SimpleValue;
import org.jboss.logging.Logger;

/**
 * Bind a list to the underlying Hibernate configuration
 *
 * @author Matthew Inger
 * @author Emmanuel Bernard
 */
@SuppressWarnings({"unchecked", "serial"})
public class ListBinder extends CollectionBinder {
    private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, ListBinder.class.getName());

	public ListBinder() {
	}

	@Override
    protected Collection createCollection(PersistentClass persistentClass) {
		return new org.hibernate.mapping.List( getMappings(), persistentClass );
	}

	@Override
    public void setSqlOrderBy(OrderBy orderByAnn) {
        if (orderByAnn != null) LOG.orderByAnnotationIndexedCollection();
	}

	@Override
    public void setSort(Sort sortAnn) {
        if (sortAnn != null) LOG.sortAnnotationIndexedCollection();
	}

	@Override
	public SecondPass getSecondPass(
			final Ejb3JoinColumn[] fkJoinColumns,
			final Ejb3JoinColumn[] keyColumns,
			final Ejb3JoinColumn[] inverseColumns,
			final Ejb3Column[] elementColumns,
			Ejb3Column[] mapKeyColumns,
			final Ejb3JoinColumn[] mapKeyManyToManyColumns,
			final boolean isEmbedded,
			final XProperty property,
			final XClass collType,
			final boolean ignoreNotFound,
			final boolean unique,
			final TableBinder assocTableBinder,
			final Mappings mappings) {
		return new CollectionSecondPass( mappings, ListBinder.this.collection ) {
			@Override
            public void secondPass(Map persistentClasses, Map inheritedMetas)
					throws MappingException {
				bindStarToManySecondPass(
						persistentClasses, collType, fkJoinColumns, keyColumns, inverseColumns, elementColumns,
						isEmbedded, property, unique, assocTableBinder, ignoreNotFound, mappings
				);
				bindIndex( mappings );
			}
		};
	}

	private void bindIndex(final Mappings mappings) {
		if ( !indexColumn.isImplicit() ) {
			PropertyHolder valueHolder = PropertyHolderBuilder.buildPropertyHolder(
					this.collection,
					StringHelper.qualify( this.collection.getRole(), "key" ),
					(XClass) null,
					(XProperty) null, propertyHolder, mappings
			);
			List list = (List) this.collection;
			if ( !list.isOneToMany() ) indexColumn.forceNotNull();
			indexColumn.setPropertyHolder( valueHolder );
			SimpleValueBinder value = new SimpleValueBinder();
			value.setColumns( new Ejb3Column[] { indexColumn } );
			value.setExplicitType( "integer" );
			value.setMappings( mappings );
			SimpleValue indexValue = value.make();
			indexColumn.linkWithValue( indexValue );
			list.setIndex( indexValue );
			list.setBaseIndex( indexColumn.getBase() );
			if ( list.isOneToMany() && !list.getKey().isNullable() && !list.isInverse() ) {
				String entityName = ( (OneToMany) list.getElement() ).getReferencedEntityName();
				PersistentClass referenced = mappings.getClass( entityName );
				IndexBackref ib = new IndexBackref();
				ib.setName( '_' + propertyName + "IndexBackref" );
				ib.setUpdateable( false );
				ib.setSelectable( false );
				ib.setCollectionRole( list.getRole() );
				ib.setEntityName( list.getOwner().getEntityName() );
				ib.setValue( list.getIndex() );
				referenced.addProperty( ib );
			}
		}
		else {
			Collection coll = this.collection;
			throw new AnnotationException(
					"List/array has to be annotated with an @OrderColumn (or @IndexColumn): "
							+ coll.getRole()
			);
		}
	}
}