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...ore/src/test/java/org/hibernate/orm/test/jpa/compliance/CriteriaRecursiveCteCopyTest.java
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/* | ||
* Hibernate, Relational Persistence for Idiomatic Java | ||
* | ||
* License: GNU Lesser General Public License (LGPL), version 2.1 or later | ||
* See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html | ||
*/ | ||
package org.hibernate.orm.test.jpa.compliance; | ||
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import java.util.List; | ||
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import org.hibernate.cfg.AvailableSettings; | ||
import org.hibernate.query.criteria.HibernateCriteriaBuilder; | ||
import org.hibernate.query.criteria.JpaCriteriaQuery; | ||
import org.hibernate.query.criteria.JpaCteCriteria; | ||
import org.hibernate.query.criteria.JpaRoot; | ||
import org.hibernate.query.hql.spi.SqmQueryImplementor; | ||
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import org.hibernate.testing.orm.junit.DialectFeatureChecks; | ||
import org.hibernate.testing.orm.junit.EntityManagerFactoryScope; | ||
import org.hibernate.testing.orm.junit.Jira; | ||
import org.hibernate.testing.orm.junit.Jpa; | ||
import org.hibernate.testing.orm.junit.RequiresDialectFeature; | ||
import org.hibernate.testing.orm.junit.Setting; | ||
import org.junit.jupiter.api.AfterAll; | ||
import org.junit.jupiter.api.BeforeAll; | ||
import org.junit.jupiter.api.Test; | ||
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import jakarta.persistence.Entity; | ||
import jakarta.persistence.GeneratedValue; | ||
import jakarta.persistence.Id; | ||
import jakarta.persistence.OneToOne; | ||
import jakarta.persistence.Tuple; | ||
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import static org.assertj.core.api.Assertions.assertThat; | ||
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/** | ||
* @author Marco Belladelli | ||
*/ | ||
@Jpa( | ||
annotatedClasses = CriteriaRecursiveCteCopyTest.Account.class, | ||
properties = @Setting( name = AvailableSettings.CRITERIA_COPY_TREE, value = "true" ) | ||
) | ||
@RequiresDialectFeature( feature = DialectFeatureChecks.SupportsRecursiveCtes.class ) | ||
@Jira( "https://hibernate.atlassian.net/browse/HHH-16483" ) | ||
public class CriteriaRecursiveCteCopyTest { | ||
@BeforeAll | ||
public void setUp(EntityManagerFactoryScope scope) { | ||
scope.inTransaction( entityManager -> { | ||
final Account parent = new Account( "Parent Account", null ); | ||
final Account child = new Account( "Child Account", parent ); | ||
entityManager.persist( parent ); | ||
entityManager.persist( child ); | ||
} ); | ||
} | ||
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@AfterAll | ||
public void tearDown(EntityManagerFactoryScope scope) { | ||
scope.inTransaction( entityManager -> { | ||
entityManager.createQuery( "delete from Account a where a.parent is not null" ).executeUpdate(); | ||
entityManager.createQuery( "delete from Account" ).executeUpdate(); | ||
} ); | ||
} | ||
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@Test | ||
public void testRecursiveCte(EntityManagerFactoryScope scope) { | ||
scope.inTransaction( entityManager -> { | ||
final HibernateCriteriaBuilder builder = (HibernateCriteriaBuilder) entityManager.getCriteriaBuilder(); | ||
final JpaCriteriaQuery<Tuple> query = builder.createTupleQuery(); | ||
final JpaCriteriaQuery<Tuple> nonRecurQuery = builder.createTupleQuery(); | ||
final JpaRoot<Account> nonRecurRoot = nonRecurQuery.from( Account.class ); | ||
nonRecurQuery.multiselect( | ||
nonRecurRoot.get( "id" ).alias( "id" ), | ||
nonRecurRoot.get( "name" ).alias( "name" ), | ||
nonRecurRoot.get( "parent" ).get( "id" ).alias( "parent_id" ) | ||
); | ||
nonRecurQuery.where( builder.like( builder.lower( nonRecurRoot.get( "name" ) ), "%child%" ) ); | ||
final JpaCteCriteria<Tuple> accountChainTable = query.withRecursiveUnionAll( nonRecurQuery, (cte) -> { | ||
final JpaCriteriaQuery<Tuple> innerQuery = builder.createTupleQuery(); | ||
final JpaRoot<Account> accountRoot = innerQuery.from( Account.class ); | ||
final JpaRoot<Tuple> cteRoot = innerQuery.from( cte ); | ||
innerQuery.multiselect( | ||
accountRoot.get( "id" ), | ||
accountRoot.get( "name" ), | ||
accountRoot.get( "parent" ).get( "id" ) | ||
); | ||
innerQuery.where( builder.equal( accountRoot.get( "id" ), cteRoot.get( "parent_id" ) ) ); | ||
return innerQuery; | ||
} ); | ||
final JpaRoot<Tuple> root = query.from( accountChainTable ); | ||
query.multiselect( root.get( "id" ), root.get( "name" ), root.get( "parent_id" ) ); | ||
final SqmQueryImplementor<Tuple> querySqm = (SqmQueryImplementor<Tuple>) entityManager.createQuery( query ); | ||
assertThat( querySqm.getSqmStatement() ) | ||
.withFailMessage( "Query statement should have been copied: [%s]", querySqm.getSqmStatement() ) | ||
.isNotSameAs( query ); | ||
final List<Tuple> resultList = querySqm.getResultList(); | ||
assertThat( resultList ).hasSize( 2 ); | ||
assertThat( resultList.get( 0 ).get( 1 ) ).isEqualTo( "Child Account" ); | ||
assertThat( resultList.get( 1 ).get( 1 ) ).isEqualTo( "Parent Account" ); | ||
} ); | ||
} | ||
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@Entity( name = "Account" ) | ||
public static class Account { | ||
@Id | ||
@GeneratedValue | ||
private Long id; | ||
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private String name; | ||
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@OneToOne | ||
private Account parent; | ||
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public Account() { | ||
} | ||
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public Account(String name, Account parent) { | ||
this.name = name; | ||
this.parent = parent; | ||
} | ||
} | ||
} |