HHH-7246 - Fix and test
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@ -28,11 +28,13 @@ import java.util.Map;
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import org.hibernate.HibernateException;
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import org.hibernate.collection.spi.PersistentCollection;
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import org.hibernate.dialect.Oracle8iDialect;
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import org.hibernate.engine.spi.SessionImplementor;
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import org.hibernate.envers.configuration.AuditConfiguration;
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import org.hibernate.envers.entities.PropertyData;
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import org.hibernate.envers.exception.AuditException;
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import org.hibernate.envers.reader.AuditReaderImplementor;
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import org.hibernate.envers.tools.StringTools;
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import org.hibernate.envers.tools.Tools;
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import org.hibernate.envers.tools.reflection.ReflectionTools;
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import org.hibernate.property.DirectPropertyAccessor;
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@ -62,8 +64,12 @@ public class SinglePropertyMapper implements PropertyMapper, SimpleMapperBuilder
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public boolean mapToMapFromEntity(SessionImplementor session, Map<String, Object> data, Object newObj, Object oldObj) {
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data.put(propertyData.getName(), newObj);
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return !Tools.objectsEqual(newObj, oldObj);
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boolean dbLogicallyDifferent = true;
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if ((session.getFactory().getDialect() instanceof Oracle8iDialect) && (newObj instanceof String || oldObj instanceof String)) {
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// Don't generate new revision when database replaces empty string with NULL during INSERT or UPDATE statements.
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dbLogicallyDifferent = !(StringTools.isEmpty((String) newObj) && StringTools.isEmpty((String) oldObj));
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}
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return dbLogicallyDifferent && !Tools.objectsEqual(newObj, oldObj);
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}
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@Override
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@ -0,0 +1,67 @@
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package org.hibernate.envers.test.integration.basic;
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import java.util.Arrays;
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import javax.persistence.EntityManager;
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import junit.framework.Assert;
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import org.junit.Test;
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import org.hibernate.dialect.Oracle8iDialect;
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import org.hibernate.envers.test.BaseEnversJPAFunctionalTestCase;
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import org.hibernate.envers.test.Priority;
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import org.hibernate.envers.test.entities.StrTestEntity;
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import org.hibernate.testing.RequiresDialect;
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import org.hibernate.testing.TestForIssue;
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/**
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* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
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*/
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@TestForIssue(jiraKey = "HHH-7246")
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@RequiresDialect(Oracle8iDialect.class)
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public class EmptyStringTest extends BaseEnversJPAFunctionalTestCase {
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private Integer emptyId = null;
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private Integer nullId = null;
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@Override
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protected Class<?>[] getAnnotatedClasses() {
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return new Class<?>[]{StrTestEntity.class};
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}
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@Test
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@Priority(10)
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public void initData() {
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EntityManager em = getEntityManager();
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// Revision 1
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em.getTransaction().begin();
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StrTestEntity emptyEntity = new StrTestEntity("");
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em.persist(emptyEntity);
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StrTestEntity nullEntity = new StrTestEntity(null);
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em.persist(nullEntity);
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em.getTransaction().commit();
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emptyId = emptyEntity.getId();
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nullId = nullEntity.getId();
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em.close();
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em = getEntityManager();
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// Should not generate revision after NULL to "" modification and vice versa on Oracle.
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em.getTransaction().begin();
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emptyEntity = em.find(StrTestEntity.class, emptyId);
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emptyEntity.setStr(null);
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em.merge(emptyEntity);
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nullEntity = em.find(StrTestEntity.class, nullId);
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nullEntity.setStr("");
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em.merge(nullEntity);
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em.getTransaction().commit();
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em.close();
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}
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@Test
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public void testRevisionsCounts() {
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Assert.assertEquals(Arrays.asList(1), getAuditReader().getRevisions(StrTestEntity.class, emptyId));
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Assert.assertEquals(Arrays.asList(1), getAuditReader().getRevisions(StrTestEntity.class, nullId));
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}
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}
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