Hibernate example source code file (RevisionConstraintQuery.java)

This example Hibernate source code file (RevisionConstraintQuery.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, integer, integer, list, list, long, object, priority, revisionconstraintquery, strinttestentity, strinttestentity, suppresswarnings, test, test, util

The Hibernate RevisionConstraintQuery.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.query;

import org.hibernate.ejb.Ejb3Configuration;
import org.hibernate.envers.RevisionType;
import org.hibernate.envers.query.AuditEntity;
import org.hibernate.envers.test.AbstractEntityTest;
import org.hibernate.envers.test.Priority;
import org.hibernate.envers.test.entities.StrIntTestEntity;
import org.junit.Test;

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

/**
 * @author Adam Warski (adam at warski dot org)
 */
@SuppressWarnings({"unchecked"})
public class RevisionConstraintQuery extends AbstractEntityTest {
    private Integer id1;

    public void configure(Ejb3Configuration cfg) {
        cfg.addAnnotatedClass(StrIntTestEntity.class);
    }

    @Test
    @Priority(10)
    public void initData() {
        // Revision 1
        EntityManager em = getEntityManager();
        em.getTransaction().begin();

        StrIntTestEntity site1 = new StrIntTestEntity("a", 10);
        StrIntTestEntity site2 = new StrIntTestEntity("b", 15);

        em.persist(site1);
        em.persist(site2);

        id1 = site1.getId();
        Integer id2 = site2.getId();

        em.getTransaction().commit();

        // Revision 2
        em.getTransaction().begin();

        site1 = em.find(StrIntTestEntity.class, id1);
        site2 = em.find(StrIntTestEntity.class, id2);

        site1.setStr1("d");
        site2.setNumber(20);

        em.getTransaction().commit();

        // Revision 3
        em.getTransaction().begin();

        site1 = em.find(StrIntTestEntity.class, id1);
        site2 = em.find(StrIntTestEntity.class, id2);

        site1.setNumber(1);
        site2.setStr1("z");

        em.getTransaction().commit();

        // Revision 4
        em.getTransaction().begin();

        site1 = em.find(StrIntTestEntity.class, id1);
        site2 = em.find(StrIntTestEntity.class, id2);

        site1.setNumber(5);
        site2.setStr1("a");

        em.getTransaction().commit();
    }
    
    @Test
    public void testRevisionsLtQuery() {
        List result = getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, false, true)
                .addProjection(AuditEntity.revisionNumber().distinct())
                .add(AuditEntity.revisionNumber().lt(3))
                .getResultList();

        assert Arrays.asList(1, 2).equals(result);
    }

    @Test
    public void testRevisionsGeQuery() {
        List result = getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, false, true)
                .addProjection(AuditEntity.revisionNumber().distinct())
                .add(AuditEntity.revisionNumber().ge(2))
                .getResultList();

        assert Arrays.asList(2, 3, 4).equals(result);
    }

    @Test
    public void testRevisionsLeWithPropertyQuery() {
        List result = getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, false, true)
                .addProjection(AuditEntity.revisionNumber())
                .add(AuditEntity.revisionNumber().le(3))
                .add(AuditEntity.property("str1").eq("a"))
                .getResultList();

        assert Arrays.asList(1).equals(result);
    }

    @Test
    public void testRevisionsGtWithPropertyQuery() {
        List result = getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, false, true)
                .addProjection(AuditEntity.revisionNumber())
                .add(AuditEntity.revisionNumber().gt(1))
                .add(AuditEntity.property("number").lt(10))
                .getResultList();

        assert Arrays.asList(3, 4).equals(result);
    }

    @Test
    public void testRevisionProjectionQuery() {
        Object[] result = (Object[]) getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, false, true)
                .addProjection(AuditEntity.revisionNumber().max())
                .addProjection(AuditEntity.revisionNumber().count())
                .addProjection(AuditEntity.revisionNumber().countDistinct())
                .addProjection(AuditEntity.revisionNumber().min())
                .add(AuditEntity.id().eq(id1))
                .getSingleResult();

        assert (Integer) result[0] == 4;
        assert (Long) result[1] == 4;
        assert (Long) result[2] == 4;
        assert (Integer) result[3] == 1;
    }

    @Test
    public void testRevisionOrderQuery() {
        List result = getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, false, true)
                .addProjection(AuditEntity.revisionNumber())
                .add(AuditEntity.id().eq(id1))
                .addOrder(AuditEntity.revisionNumber().desc())
                .getResultList();

        assert Arrays.asList(4, 3, 2, 1).equals(result);
    }

    @Test
    public void testRevisionCountQuery() {
        // The query shouldn't be ordered as always, otherwise - we get an exception.
        Object result = getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, false, true)
                .addProjection(AuditEntity.revisionNumber().count())
                .add(AuditEntity.id().eq(id1))
                .getSingleResult();

        assert (Long) result == 4;
    }

    @Test
    public void testRevisionTypeEqQuery() {
        // The query shouldn't be ordered as always, otherwise - we get an exception.
        List results = getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, true, true)
                .add(AuditEntity.id().eq(id1))
                .add(AuditEntity.revisionType().eq(RevisionType.MOD))
                .getResultList();
        
        assert results.size() == 3;
        assert results.get(0).equals(new StrIntTestEntity("d", 10, id1));
        assert results.get(1).equals(new StrIntTestEntity("d", 1, id1));
        assert results.get(2).equals(new StrIntTestEntity("d", 5, id1));
    }

    @Test
    public void testRevisionTypeNeQuery() {
        // The query shouldn't be ordered as always, otherwise - we get an exception.
        List results = getAuditReader().createQuery()
                .forRevisionsOfEntity(StrIntTestEntity.class, true, true)
                .add(AuditEntity.id().eq(id1))
                .add(AuditEntity.revisionType().ne(RevisionType.MOD))
                .getResultList();

        assert results.size() == 1;
        assert results.get(0).equals(new StrIntTestEntity("a", 10, id1));
    }
}