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HHH-9106 : Merging multiple representations of the same entity (entitymanager test cases) 

(cherry picked from commit 055b0cacae)
This commit is contained in:
Gail Badner 2014-06-13 16:01:39 -07:00
parent cedc1e7667
commit 7791a7048a
5 changed files with 685 additions and 0 deletions
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109
hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/emops/Category.java Normal file
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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2014, Red Hat Inc. 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 Inc.
*
* 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.jpa.test.emops;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
/**
* @author Gail Badner
*/
@Entity
public class Category {
@Id
@GeneratedValue
private Long id;
private String name;
@ManyToOne( cascade = { CascadeType.PERSIST, CascadeType.MERGE } )
private Item exampleItem;
private int version;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Item getExampleItem() {
return exampleItem;
}
public void setExampleItem(Item exampleItem) {
this.exampleItem = exampleItem;
}
public int getVersion() {
return version;
}
public void setVersion(int version) {
this.version = version;
}
@Override
public String toString() {
return "Category{" +
"id=" + id +
", name='" + name + '\'' +
", version=" + version +
'}';
}
@Override
public boolean equals(Object o) {
if ( this == o ) {
return true;
}
if ( o == null || getClass() != o.getClass() ) {
return false;
}
Category category = (Category) o;
if ( name != null ? !name.equals( category.name ) : category.name != null ) {
return false;
}
return true;
}
@Override
public int hashCode() {
return name != null ? name.hashCode() : 0;
}
}

93
hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/emops/Hoarder.java Normal file
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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2014, Red Hat Inc. 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 Inc.
*
* 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.jpa.test.emops;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
/**
* @author Gail Badner
*/
@Entity
public class Hoarder {
@Id
@GeneratedValue
private Long id;
private String name;
@ManyToOne( cascade = { CascadeType.PERSIST, CascadeType.MERGE } )
private Item favoriteItem;
@OneToMany( cascade = { CascadeType.PERSIST, CascadeType.MERGE } )
@JoinColumn
private Set<Item> items = new HashSet<Item>();
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Item getFavoriteItem() {
return favoriteItem;
}
public void setFavoriteItem(Item favoriteItem) {
this.favoriteItem = favoriteItem;
}
public Set<Item> getItems() {
return items;
}
public void setItems(Set<Item> items) {
this.items = items;
}
@Override
public String toString() {
return "Hoarder{" +
"id=" + id +
", name='" + name + '\'' +
", favoriteItem=" + favoriteItem +
'}';
}
}

111
hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/emops/Item.java Normal file
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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2014, Red Hat Inc. 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 Inc.
*
* 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.jpa.test.emops;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
/**
* @author Gail Badner
*/
@Entity
public class Item {
@Id
@GeneratedValue
private Long id;
private int version;
private String name;
@ManyToOne( cascade = { CascadeType.PERSIST, CascadeType.MERGE } )
private Category category;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public int getVersion() {
return version;
}
public void setVersion(int version) {
this.version = version;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Category getCategory() {
return category;
}
public void setCategory(Category category) {
this.category = category;
}
@Override
public boolean equals(Object o) {
if ( this == o ) {
return true;
}
if ( o == null || getClass() != o.getClass() ) {
return false;
}
Item item = (Item) o;
if ( !name.equals( item.name ) ) {
return false;
}
return true;
}
@Override
public int hashCode() {
return name.hashCode();
}
@Override
public String toString() {
return "Item{" +
"id=" + id +
", version=" + version +
", name='" + name + '\'' +
//", category=" + category +
//", subItems=" + subItems +
'}';
}
}

197
hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/emops/MergeMultipleEntityRepresentationsAllowedTest.java Normal file
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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2014, Red Hat Inc. 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 Inc.
*
* 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.jpa.test.emops;
import java.util.List;
import javax.persistence.EntityManager;
import org.junit.Test;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.event.service.spi.EventListenerRegistry;
import org.hibernate.event.spi.EventType;
import org.hibernate.jpa.event.internal.core.JpaEntityCopyAllowedMergeEventListener;
import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
import org.hibernate.testing.TestForIssue;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
/**
* Tests merging multiple detached representations of the same entity using
* {@link org.hibernate.jpa.event.internal.core.JpaEntityCopyAllowedMergeEventListener}.
*
* @author Gail Badner
*/
@TestForIssue( jiraKey = "HHH-9106")
public class MergeMultipleEntityRepresentationsAllowedTest extends BaseEntityManagerFunctionalTestCase {
@Override
protected void afterEntityManagerFactoryBuilt() {
super.afterEntityManagerFactoryBuilt();
SessionFactoryImplementor sfi = entityManagerFactory().unwrap( SessionFactoryImplementor.class );
EventListenerRegistry registry = sfi.getServiceRegistry().getService( EventListenerRegistry.class );
registry.setListeners( EventType.MERGE, new JpaEntityCopyAllowedMergeEventListener() );
}
@Test
public void testCascadeFromDetachedToNonDirtyRepresentations() {
Item item1 = new Item();
item1.setName( "item1" );
Hoarder hoarder = new Hoarder();
hoarder.setName( "joe" );
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist( item1 );
em.persist( hoarder );
em.getTransaction().commit();
em.close();
// Get another representation of the same Item from a different EntityManager.
em = getOrCreateEntityManager();
Item item1_1 = em.find( Item.class, item1.getId() );
em.close();
// item1_1 and item1_2 are unmodified representations of the same persistent entity.
assertFalse( item1 == item1_1 );
assertTrue( item1.equals( item1_1 ) );
// Update hoarder (detached) to references both representations.
hoarder.getItems().add( item1 );
hoarder.setFavoriteItem( item1_1 );
em = getOrCreateEntityManager();
em.getTransaction().begin();
hoarder = em.merge( hoarder );
assertEquals( 1, hoarder.getItems().size() );
assertSame( hoarder.getFavoriteItem(), hoarder.getItems().iterator().next() );
assertEquals( item1.getId(), hoarder.getFavoriteItem().getId() );
assertEquals( item1.getCategory(), hoarder.getFavoriteItem().getCategory() );
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
hoarder = em.merge( hoarder );
assertEquals( 1, hoarder.getItems().size() );
assertSame( hoarder.getFavoriteItem(), hoarder.getItems().iterator().next() );
assertEquals( item1.getId(), hoarder.getFavoriteItem().getId() );
assertEquals( item1.getCategory(), hoarder.getFavoriteItem().getCategory() );
em.getTransaction().commit();
em.close();
cleanup();
}
@Test
public void testTopLevelManyToOneManagedNestedIsDetached() {
Item item1 = new Item();
item1.setName( "item1 name" );
Category category = new Category();
category.setName( "category" );
item1.setCategory( category );
category.setExampleItem( item1 );
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist( item1 );
em.getTransaction().commit();
em.close();
// get another representation of item1
em = getOrCreateEntityManager();
em.getTransaction().begin();
Item item1_1 = em.find( Item.class, item1.getId() );
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
Item item1Merged = em.merge( item1 );
item1Merged.setCategory( category );
category.setExampleItem( item1_1 );
// now item1Merged is managed and it has a nested detached item
em.merge( item1Merged );
assertEquals( category.getName(), item1Merged.getCategory().getName() );
assertSame( item1Merged, item1Merged.getCategory().getExampleItem() );
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
item1 = em.find( Item.class, item1.getId() );
assertEquals( category.getName(), item1.getCategory().getName() );
assertSame( item1, item1.getCategory().getExampleItem() );
em.getTransaction().commit();
em.close();
cleanup();
}
@SuppressWarnings( {"unchecked"})
private void cleanup() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
for ( Hoarder hoarder : (List<Hoarder>) em.createQuery( "from Hoarder" ).getResultList() ) {
hoarder.getItems().clear();
em.remove( hoarder );
}
for ( Category category : (List<Category>) em.createQuery( "from Category" ).getResultList() ) {
if ( category.getExampleItem() != null ) {
category.setExampleItem( null );
em.remove( category );
}
}
for ( Item item : (List<Item>) em.createQuery( "from Item" ).getResultList() ) {
item.setCategory( null );
em.remove( item );
}
em.createQuery( "delete from Item" ).executeUpdate();
em.getTransaction().commit();
em.close();
}
@Override
public Class[] getAnnotatedClasses() {
return new Class[] {
Category.class,
Hoarder.class,
Item.class
};
}
}

175
hibernate-entitymanager/src/test/java/org/hibernate/jpa/test/emops/MergeMultipleEntityRepresentationsNotAllowedTest.java Normal file
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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2014, Red Hat Inc. 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 Inc.
*
* 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.jpa.test.emops;
import java.util.List;
import javax.persistence.EntityManager;
import org.junit.Test;
import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
import org.hibernate.testing.TestForIssue;
import static junit.framework.TestCase.fail;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
/**
* Tests merging multiple detached representations of the same entity using
* a the default MergeEventListener (that does not allow this).
*
* @author Gail Badner
*/
@TestForIssue( jiraKey = "HHH-9106")
public class MergeMultipleEntityRepresentationsNotAllowedTest extends BaseEntityManagerFunctionalTestCase {
@Test
public void testCascadeFromDetachedToNonDirtyRepresentations() {
Item item1 = new Item();
item1.setName( "item1" );
Hoarder hoarder = new Hoarder();
hoarder.setName( "joe" );
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist( item1 );
em.persist( hoarder );
em.getTransaction().commit();
em.close();
// Get another representation of the same Item from a different session.
em = getOrCreateEntityManager();
Item item1_1 = em.find( Item.class, item1.getId() );
em.close();
// item1_1 and item1_2 are unmodified representations of the same persistent entity.
assertFalse( item1 == item1_1 );
assertTrue( item1.equals( item1_1 ) );
// Update hoarder (detached) to references both representations.
hoarder.getItems().add( item1 );
hoarder.setFavoriteItem( item1_1 );
em = getOrCreateEntityManager();
em.getTransaction().begin();
try {
em.merge( hoarder );
fail( "should have failed due IllegalStateException");
}
catch (IllegalStateException ex) {
//expected
}
finally {
em.getTransaction().rollback();
em.close();
}
cleanup();
}
@Test
public void testTopLevelManyToOneManagedNestedIsDetached() {
Item item1 = new Item();
item1.setName( "item1 name" );
Category category = new Category();
category.setName( "category" );
item1.setCategory( category );
category.setExampleItem( item1 );
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
em.persist( item1 );
em.getTransaction().commit();
em.close();
// get another representation of item1
em = getOrCreateEntityManager();
em.getTransaction().begin();
Item item1_1 = em.find( Item.class, item1.getId() );
em.getTransaction().commit();
em.close();
em = getOrCreateEntityManager();
em.getTransaction().begin();
Item item1Merged = em.merge( item1 );
item1Merged.setCategory( category );
category.setExampleItem( item1_1 );
// now item1Merged is managed and it has a nested detached item
try {
em.merge( item1Merged );
fail( "should have failed due IllegalStateException");
}
catch (IllegalStateException ex) {
//expected
}
finally {
em.getTransaction().rollback();
em.close();
}
cleanup();
}
@SuppressWarnings( {"unchecked"})
private void cleanup() {
EntityManager em = getOrCreateEntityManager();
em.getTransaction().begin();
for ( Hoarder hoarder : (List<Hoarder>) em.createQuery( "from Hoarder" ).getResultList() ) {
hoarder.getItems().clear();
em.remove( hoarder );
}
for ( Category category : (List<Category>) em.createQuery( "from Category" ).getResultList() ) {
if ( category.getExampleItem() != null ) {
category.setExampleItem( null );
em.remove( category );
}
}
for ( Item item : (List<Item>) em.createQuery( "from Item" ).getResultList() ) {
item.setCategory( null );
em.remove( item );
}
em.createQuery( "delete from Item" ).executeUpdate();
em.getTransaction().commit();
em.close();
}
@Override
public Class[] getAnnotatedClasses() {
return new Class[] {
Category.class,
Hoarder.class,
Item.class
};
}
}