Hibernate example source code file (TernaryMapFlush.java)

This example Hibernate source code file (TernaryMapFlush.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

abstractentitytest, entitymanager, hashmap, integer, integer, inttestentity, inttestentity, priority, strtestentity, strtestentity, ternarymapentity, ternarymapentity, ternarymapflush, test, util

The Hibernate TernaryMapFlush.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.test.integration.manytomany.ternary;

import org.hibernate.ejb.Ejb3Configuration;
import org.hibernate.envers.test.AbstractEntityTest;
import org.hibernate.envers.test.Priority;
import org.hibernate.envers.test.entities.IntTestEntity;
import org.hibernate.envers.test.entities.StrTestEntity;
import org.hibernate.envers.test.tools.TestTools;
import org.junit.Test;

import javax.persistence.EntityManager;
import java.util.Arrays;
import java.util.HashMap;

import static org.junit.Assert.*;

/**
 * @author Adam Warski (adam at warski dot org)
 */
public class TernaryMapFlush extends AbstractEntityTest {
    private Integer str1_id;
    private Integer str2_id;
    private Integer int1_id;
    private Integer int2_id;
    private Integer map1_id;

    public void configure(Ejb3Configuration cfg) {
        cfg.addAnnotatedClass(TernaryMapEntity.class);
        cfg.addAnnotatedClass(StrTestEntity.class);
        cfg.addAnnotatedClass(IntTestEntity.class);
    }

    @Test
    @Priority(10)
    public void createData() {
        EntityManager em = getEntityManager();

        StrTestEntity str1 = new StrTestEntity("a");
        StrTestEntity str2 = new StrTestEntity("b");
        IntTestEntity int1 = new IntTestEntity(1);
        IntTestEntity int2 = new IntTestEntity(2);
        TernaryMapEntity map1 = new TernaryMapEntity();

        // Revision 1 (int1 -> str1)
        em.getTransaction().begin();

        em.persist(str1);
        em.persist(str2);
        em.persist(int1);
        em.persist(int2);

        map1.getMap().put(int1, str1);

        em.persist(map1);

        em.getTransaction().commit();

        // Revision 2 (removing int1->str1, flushing, adding int1->str1 again and a new int2->str2 mapping to force a change)

        em.getTransaction().begin();

        map1 = em.find(TernaryMapEntity.class, map1.getId());
        str1 = em.find(StrTestEntity.class, str1.getId());
        int1 = em.find(IntTestEntity.class, int1.getId());

        map1.setMap(new HashMap<IntTestEntity, StrTestEntity>());
        
        em.flush();

        map1.getMap().put(int1, str1);
        map1.getMap().put(int2, str2);

        em.getTransaction().commit();

        // Revision 3 (removing int1->str1, flushing, overwriting int2->str1)

        em.getTransaction().begin();

        map1 = em.find(TernaryMapEntity.class, map1.getId());
        str1 = em.find(StrTestEntity.class, str1.getId());
        int1 = em.find(IntTestEntity.class, int1.getId());

        map1.getMap().remove(int1);

        em.flush();

        map1.getMap().put(int2, str1);

        em.getTransaction().commit();

        //

        map1_id = map1.getId();
        str1_id = str1.getId();
        str2_id = str2.getId();
        int1_id = int1.getId();
        int2_id = int2.getId();
    }

    @Test
    public void testRevisionsCounts() {
        assertEquals(Arrays.asList(1, 2, 3), getAuditReader().getRevisions(TernaryMapEntity.class, map1_id));
        assertEquals(Arrays.asList(1), getAuditReader().getRevisions(StrTestEntity.class, str1_id));
        assertEquals(Arrays.asList(1), getAuditReader().getRevisions(StrTestEntity.class, str2_id));
        assertEquals(Arrays.asList(1) ,getAuditReader().getRevisions(IntTestEntity.class, int1_id));
        assertEquals(Arrays.asList(1) ,getAuditReader().getRevisions(IntTestEntity.class, int2_id));
    }

    @Test
    public void testHistoryOfMap1() {
        StrTestEntity str1 = getEntityManager().find(StrTestEntity.class, str1_id);
        StrTestEntity str2 = getEntityManager().find(StrTestEntity.class, str2_id);
        IntTestEntity int1 = getEntityManager().find(IntTestEntity.class, int1_id);
        IntTestEntity int2 = getEntityManager().find(IntTestEntity.class, int2_id);

        TernaryMapEntity rev1 = getAuditReader().find(TernaryMapEntity.class, map1_id, 1);
        TernaryMapEntity rev2 = getAuditReader().find(TernaryMapEntity.class, map1_id, 2);
        TernaryMapEntity rev3 = getAuditReader().find(TernaryMapEntity.class, map1_id, 3);

        assertEquals(rev1.getMap(), TestTools.makeMap(int1, str1));
        assertEquals(rev2.getMap(), TestTools.makeMap(int1, str1, int2, str2));
        assertEquals(rev3.getMap(), TestTools.makeMap(int2, str1));
    }
}