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HHH-13725 - Implement ManyToOne associations support

This commit is contained in:
Andrea Boriero 2019-11-14 10:14:49 +00:00 committed by Steve Ebersole
parent bfb640196d
commit 86dee1f66c
1 changed files with 64 additions and 24 deletions
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88
hibernate-core/src/test/java/org/hibernate/orm/test/sql/exec/manytoone/ManyToOneTest.java
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@ -46,7 +46,7 @@ import static org.junit.Assert.assertTrue;
public class ManyToOneTest { public class ManyToOneTest {
@Test @Test
public void testHqlSelect(SessionFactoryScope scope) { public void testHqlSelectWithoutJoin(SessionFactoryScope scope) {
StatisticsImplementor statistics = scope.getSessionFactory().getStatistics(); StatisticsImplementor statistics = scope.getSessionFactory().getStatistics();
statistics.clear(); statistics.clear();
scope.inTransaction( scope.inTransaction(
@ -56,7 +56,7 @@ public class ManyToOneTest {
createQuery( "from OtherEntity", OtherEntity.class ) createQuery( "from OtherEntity", OtherEntity.class )
.uniqueResult(); .uniqueResult();
assertThat( statistics.getPrepareStatementCount(), is(1L) ); assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
assertThat( otherEntity.getName(), is( "Bar" ) ); assertThat( otherEntity.getName(), is( "Bar" ) );
SimpleEntity simpleEntity = otherEntity.getSimpleEntity(); SimpleEntity simpleEntity = otherEntity.getSimpleEntity();
@ -67,7 +67,7 @@ public class ManyToOneTest {
assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) ); assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) );
assertThat( simpleEntity.getName(), is( "Fab" ) ); assertThat( simpleEntity.getName(), is( "Fab" ) );
assertThat( statistics.getPrepareStatementCount(), is(2L) ); assertThat( statistics.getPrepareStatementCount(), is( 2L ) );
assertTrue( Hibernate.isInitialized( simpleEntity ) ); assertTrue( Hibernate.isInitialized( simpleEntity ) );
} }
@ -94,15 +94,43 @@ public class ManyToOneTest {
createQuery( "from OtherEntity", OtherEntity.class ) createQuery( "from OtherEntity", OtherEntity.class )
.uniqueResult(); .uniqueResult();
// the ManyToOne is eager but the value is not null so a second query is executed // the ManyToOne is eager but the value is not null so a second query is executed
assertThat( statistics.getPrepareStatementCount(), is(2L) ); assertThat( statistics.getPrepareStatementCount(), is( 2L ) );
assertThat( otherEntity.getName(), is( "Bar" ) ); assertThat( otherEntity.getName(), is( "Bar" ) );
SimpleEntity simpleEntity = otherEntity.getSimpleEntity(); SimpleEntity simpleEntity = otherEntity.getSimpleEntity();
assertFalse( Hibernate.isInitialized( simpleEntity ) ); assertFalse( Hibernate.isInitialized( simpleEntity ) );
AnotherSimpleEntity anotherSimpleEntity = otherEntity.getAnotherSimpleEntity(); AnotherSimpleEntity anotherSimpleEntity = otherEntity.getAnotherSimpleEntity();
assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) ); assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) );
assertThat( statistics.getPrepareStatementCount(), is(2L) );
assertThat( statistics.getPrepareStatementCount(), is( 2L ) );
}
);
}
@Test
public void testHQLSelectWithJoin(SessionFactoryScope scope) {
StatisticsImplementor statistics = scope.getSessionFactory().getStatistics();
statistics.clear();
scope.inTransaction(
session -> {
OtherEntity otherEntity = session.
createQuery( "from OtherEntity o join o.simpleEntity", OtherEntity.class )
.uniqueResult();
assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
assertThat( otherEntity.getName(), is( "Bar" ) );
SimpleEntity simpleEntity = otherEntity.getSimpleEntity();
assertFalse( Hibernate.isInitialized( simpleEntity ) );
assertThat( simpleEntity, notNullValue() );
assertThat( simpleEntity.getName(), is( "Fab" ) );
assertThat( statistics.getPrepareStatementCount(), is( 2L ) );
AnotherSimpleEntity anotherSimpleEntity = otherEntity.getAnotherSimpleEntity();
assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) );
assertThat( statistics.getPrepareStatementCount(), is( 2L ) );
} }
); );
} }
@ -116,16 +144,19 @@ public class ManyToOneTest {
OtherEntity otherEntity = session. OtherEntity otherEntity = session.
createQuery( "from OtherEntity o join fetch o.simpleEntity", OtherEntity.class ) createQuery( "from OtherEntity o join fetch o.simpleEntity", OtherEntity.class )
.uniqueResult(); .uniqueResult();
assertThat( statistics.getPrepareStatementCount(), is(1L) ); assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
assertThat( otherEntity.getName(), is( "Bar" ) ); assertThat( otherEntity.getName(), is( "Bar" ) );
assertTrue( Hibernate.isInitialized( otherEntity.getSimpleEntity() ) );
assertThat( otherEntity.getSimpleEntity(), notNullValue() );
assertThat( otherEntity.getSimpleEntity().getName(), is( "Fab" ) ); SimpleEntity simpleEntity = otherEntity.getSimpleEntity();
assertTrue( Hibernate.isInitialized( simpleEntity ) );
assertThat( simpleEntity, notNullValue() );
assertThat( simpleEntity.getName(), is( "Fab" ) );
AnotherSimpleEntity anotherSimpleEntity = otherEntity.getAnotherSimpleEntity(); AnotherSimpleEntity anotherSimpleEntity = otherEntity.getAnotherSimpleEntity();
assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) ); assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) );
assertThat( statistics.getPrepareStatementCount(), is(1L) );
assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
} }
); );
} }
@ -142,15 +173,19 @@ public class ManyToOneTest {
OtherEntity.class OtherEntity.class
) )
.uniqueResult(); .uniqueResult();
assertThat( statistics.getPrepareStatementCount(), is(1L) ); assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
assertThat( otherEntity.getName(), is( "Bar" ) ); assertThat( otherEntity.getName(), is( "Bar" ) );
assertTrue( Hibernate.isInitialized( otherEntity.getSimpleEntity() ) );
assertThat( otherEntity.getSimpleEntity(), notNullValue() );
assertThat( otherEntity.getSimpleEntity().getName(), is( "Fab" ) ); SimpleEntity simpleEntity = otherEntity.getSimpleEntity();
assertTrue( Hibernate.isInitialized( simpleEntity ) );
assertThat( simpleEntity, notNullValue() );
assertThat( simpleEntity.getName(), is( "Fab" ) );
assertTrue( Hibernate.isInitialized( otherEntity.getAnotherSimpleEntity() ) ); assertTrue( Hibernate.isInitialized( otherEntity.getAnotherSimpleEntity() ) );
assertThat( otherEntity.getAnotherSimpleEntity(), nullValue() ); assertThat( otherEntity.getAnotherSimpleEntity(), nullValue() );
assertThat( statistics.getPrepareStatementCount(), is(1L) );
assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
} }
); );
@ -172,18 +207,22 @@ public class ManyToOneTest {
scope.inTransaction( scope.inTransaction(
session -> { session -> {
OtherEntity otherEntity = session. OtherEntity otherEntity = session.
createQuery( "from OtherEntity o join fetch o.simpleEntity left join fetch o.anotherSimpleEntity", OtherEntity.class ) createQuery(
"from OtherEntity o join fetch o.simpleEntity left join fetch o.anotherSimpleEntity",
OtherEntity.class
)
.uniqueResult(); .uniqueResult();
// the ManyToOne is eager but the value is not null so a second query is executed // the ManyToOne is eager but the value is not null so a second query is executed
assertThat( statistics.getPrepareStatementCount(), is(1L) ); assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
assertThat( otherEntity.getName(), is( "Bar" ) ); assertThat( otherEntity.getName(), is( "Bar" ) );
SimpleEntity simpleEntity = otherEntity.getSimpleEntity(); SimpleEntity simpleEntity = otherEntity.getSimpleEntity();
assertTrue( Hibernate.isInitialized( simpleEntity ) ); assertTrue( Hibernate.isInitialized( simpleEntity ) );
AnotherSimpleEntity anotherSimpleEntity = otherEntity.getAnotherSimpleEntity(); AnotherSimpleEntity anotherSimpleEntity = otherEntity.getAnotherSimpleEntity();
assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) ); assertTrue( Hibernate.isInitialized( anotherSimpleEntity ) );
assertThat( statistics.getPrepareStatementCount(), is(1L) );
assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
} }
); );
} }
@ -195,11 +234,12 @@ public class ManyToOneTest {
scope.inTransaction( scope.inTransaction(
session -> { session -> {
OtherEntity otherEntity = session.get( OtherEntity.class, 2 ); OtherEntity otherEntity = session.get( OtherEntity.class, 2 );
assertThat( otherEntity.getName(), is( "Bar" ) ); assertThat( otherEntity.getName(), is( "Bar" ) );
assertFalse( Hibernate.isInitialized( otherEntity.getSimpleEntity() ) ); assertFalse( Hibernate.isInitialized( otherEntity.getSimpleEntity() ) );
assertTrue( Hibernate.isInitialized( otherEntity.getAnotherSimpleEntity() ) ); assertTrue( Hibernate.isInitialized( otherEntity.getAnotherSimpleEntity() ) );
assertThat( statistics.getPrepareStatementCount(), is(1L) );
assertThat( statistics.getPrepareStatementCount(), is( 1L ) );
} }
); );
} }