Hibernate example source code file (AbstractAuditWorkUnit.java)

This example Hibernate source code file (AbstractAuditWorkUnit.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

abstractauditworkunit, auditconfiguration, auditworkunit, hashmap, io, map, object, object, revisiontype, revisiontype, serializable, serializable, sessionimplementor, string, string, util

The Hibernate AbstractAuditWorkUnit.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.synchronization.work;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import org.hibernate.Session;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.RevisionType;
import org.hibernate.envers.configuration.AuditConfiguration;
import org.hibernate.envers.configuration.AuditEntitiesConfiguration;
import org.hibernate.envers.strategy.AuditStrategy;

/**
 * @author Adam Warski (adam at warski dot org)
 * @author Stephanie Pau at Markit Group Plc
 * @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
 */
public abstract class AbstractAuditWorkUnit implements AuditWorkUnit {
	protected final SessionImplementor sessionImplementor;
    protected final AuditConfiguration verCfg;
    protected final Serializable id;
    protected final String entityName;
    protected final AuditStrategy auditStrategy;
    protected final RevisionType revisionType;

    private Object performedData;

    protected AbstractAuditWorkUnit(SessionImplementor sessionImplementor, String entityName, AuditConfiguration verCfg,
									Serializable id, RevisionType revisionType) {
		this.sessionImplementor = sessionImplementor;
        this.verCfg = verCfg;
        this.id = id;
        this.entityName = entityName;
        this.revisionType = revisionType;
        this.auditStrategy = verCfg.getAuditStrategy();
    }

    protected void fillDataWithId(Map<String, Object> data, Object revision) {
        AuditEntitiesConfiguration entitiesCfg = verCfg.getAuditEntCfg();

        Map<String, Object> originalId = new HashMap();
        originalId.put(entitiesCfg.getRevisionFieldName(), revision);

        verCfg.getEntCfg().get(getEntityName()).getIdMapper().mapToMapFromId(originalId, id);
        data.put(entitiesCfg.getRevisionTypePropName(), revisionType);
        data.put(entitiesCfg.getOriginalIdPropName(), originalId);
    }

    public void perform(Session session, Object revisionData) {
        Map<String, Object> data = generateData(revisionData);

        auditStrategy.perform(session, getEntityName(), verCfg, id, data, revisionData);

        setPerformed(data);
    }

    public Serializable getEntityId() {
        return id;
    }

    public boolean isPerformed() {
        return performedData != null;
    }

    public String getEntityName() {
        return entityName;
    }

    protected void setPerformed(Object performedData) {
        this.performedData = performedData;
    }

    public void undo(Session session) {
        if (isPerformed()) {
            session.delete(verCfg.getAuditEntCfg().getAuditEntityName(getEntityName()), performedData);
            session.flush();
        }
    }

    public RevisionType getRevisionType() {
        return revisionType;
    }
}