Hibernate example source code file (AbstractCollectionMapper.java)

This example Hibernate source code file (AbstractCollectionMapper.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

abstractcollectionmapper, auditexception, class, collection, collection, hashset, io, map, map, object, object, reflection, serializable, set, t, t, util

The Hibernate AbstractCollectionMapper.java source code

/*
 * 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.envers.entities.mapper.relation;
import java.io.Serializable;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.RevisionType;
import org.hibernate.envers.configuration.AuditConfiguration;
import org.hibernate.envers.entities.mapper.PersistentCollectionChangeData;
import org.hibernate.envers.entities.mapper.PropertyMapper;
import org.hibernate.envers.entities.mapper.relation.lazy.initializor.Initializor;
import org.hibernate.envers.exception.AuditException;
import org.hibernate.envers.reader.AuditReaderImplementor;
import org.hibernate.envers.tools.reflection.ReflectionTools;
import org.hibernate.property.Setter;

/**
 * @author Adam Warski (adam at warski dot org)
 */
public abstract class AbstractCollectionMapper<T> implements PropertyMapper {
    protected final CommonCollectionMapperData commonCollectionMapperData;    
    protected final Class<? extends T> collectionClass;

    private final Constructor<? extends T> proxyConstructor;

    protected AbstractCollectionMapper(CommonCollectionMapperData commonCollectionMapperData,
                                       Class<? extends T> collectionClass, Class proxyClass) {
        this.commonCollectionMapperData = commonCollectionMapperData;
        this.collectionClass = collectionClass;

        try {
            proxyConstructor = proxyClass.getConstructor(Initializor.class);
        } catch (NoSuchMethodException e) {
            throw new AuditException(e);
        }
    }

    protected abstract Collection getNewCollectionContent(PersistentCollection newCollection);
    protected abstract Collection getOldCollectionContent(Serializable oldCollection);

    /**
     * Maps the changed collection element to the given map.
     * @param data Where to map the data.
     * @param changed The changed collection element to map.
     */
    protected abstract void mapToMapFromObject(Map<String, Object> data, Object changed);

    private void addCollectionChanges(List<PersistentCollectionChangeData> collectionChanges, Set