/*
* 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.test.hql;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import org.hibernate.Session;
import org.hibernate.testing.FailureExpected;
import org.hibernate.testing.TestForIssue;
import org.hibernate.testing.junit4.BaseCoreFunctionalTestCase;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
/**
* NOTE : some subquery related tests still exist in other test classes in the suite. This is a later
* attempt to create a more targeted set of subquery related tests.
*
* @author Steve Ebersole
*/
public class SubQueryTest extends BaseCoreFunctionalTestCase {
@Entity( name = "Root" )
@Table( name = "ROOT" )
public static class Root {
@Id
@GeneratedValue
public Integer id;
public String rootName;
@OneToOne
public Branch branch;
}
@Entity( name = "Branch" )
@Table( name = "BRANCH" )
public static class Branch {
@Id
@GeneratedValue
public Integer id;
public String branchName;
@OneToMany
public List<Leaf> leaves;
}
@Entity( name = "Leaf" )
@Table( name = "LEAF" )
public static class Leaf {
@Id
@GeneratedValue
public Integer id;
public String leafName;
}
@Override
protected Class<?>[] getAnnotatedClasses() {
return new Class[] { Root.class, Branch.class, Leaf.class };
}
@Test
@TestForIssue( jiraKey = "HHH-9090" )
public void testCorrelatedJoin() {
Session s = openSession();
s.beginTransaction();
Root root = new Root();
root.rootName = "root name";
root.branch = new Branch();
root.branch.branchName = "branch";
root.branch.leaves = new ArrayList<Leaf>();
Leaf leaf1 = new Leaf();
leaf1.leafName = "leaf1";
Leaf leaf2 = new Leaf();
leaf2.leafName = "leaf2";
root.branch.leaves.add( leaf1 );
root.branch.leaves.add( leaf2 );
s.persist( leaf1 );
s.persist( leaf2 );
s.persist( root.branch );
s.persist( root );
Root otherRoot = new Root();
otherRoot.rootName = "other root name";
otherRoot.branch = new Branch();
otherRoot.branch.branchName = "other branch";
otherRoot.branch.leaves = new ArrayList<Leaf>();
Leaf otherLeaf1 = new Leaf();
otherLeaf1.leafName = "leaf1";
Leaf otherLeaf3 = new Leaf();
otherLeaf3.leafName = "leaf3";
otherRoot.branch.leaves.add( otherLeaf1 );
otherRoot.branch.leaves.add( otherLeaf3 );
s.persist( otherLeaf1 );
s.persist( otherLeaf3 );
s.persist( otherRoot.branch );
s.persist( otherRoot );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
String qry = "from Root as r " +
"where r.branch.branchName = 'branch' " +
" and exists( from r.branch.leaves as s where s.leafName = 'leaf1')";
Root rootQueried = (Root) s.createQuery( qry ).uniqueResult();
assertEquals( root.rootName, rootQueried.rootName );
assertEquals( root.branch.branchName, rootQueried.branch.branchName );
assertEquals( leaf1.leafName, rootQueried.branch.leaves.get( 0 ).leafName );
assertEquals( leaf2.leafName, rootQueried.branch.leaves.get( 1 ).leafName );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
qry = "from Root as r " +
"where r.branch.branchName = 'branch' " +
" and exists( from r.branch.leaves as s where s.leafName = 'leaf3')";
assertNull( s.createQuery( qry ).uniqueResult() );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
qry = "from Root as r " +
"where exists( from r.branch.leaves as s where r.branch.branchName = 'branch' and s.leafName = 'leaf1')";
rootQueried = (Root) s.createQuery( qry ).uniqueResult();
assertEquals( root.rootName, rootQueried.rootName );
assertEquals( root.branch.branchName, rootQueried.branch.branchName );
assertEquals( leaf1.leafName, rootQueried.branch.leaves.get( 0 ).leafName );
assertEquals( leaf2.leafName, rootQueried.branch.leaves.get( 1 ).leafName );
s.getTransaction().commit();
s.close();
s = openSession();
s.beginTransaction();
qry = "from Root as r" +
" where exists( from Root r1 where r1.branch.branchName = r.branch.branchName and r1.branch.branchName != 'other branch')";
rootQueried = (Root) s.createQuery( qry ).uniqueResult();
assertEquals( root.rootName, rootQueried.rootName );
assertEquals( root.branch.branchName, rootQueried.branch.branchName );
assertEquals( leaf1.leafName, rootQueried.branch.leaves.get( 0 ).leafName );
assertEquals( leaf2.leafName, rootQueried.branch.leaves.get( 1 ).leafName );
s.getTransaction().commit();
s.close();
}
@Test
@TestForIssue( jiraKey = "HHH-1689, SQM-30" )
public void testSubQueryAsSearchedCaseResultExpression() {
final String query = "SELECT CASE WHEN l.id IS NOT NULL THEN (SELECT COUNT(r.id) FROM Root r) ELSE 0 END FROM Leaf l";
// simple syntax check
Session s = openSession();
s.beginTransaction();
s.createQuery( query ).list();
s.getTransaction().commit();
s.close();
}
@Test
@TestForIssue( jiraKey = "HHH-1689, SQM-30" )
public void testSubQueryAsSearchedCaseExpression() {
final String query = "SELECT CASE WHEN (SELECT COUNT(r.id) FROM Root r) > 1 THEN 1 ELSE 0 END FROM Leaf l";
// simple syntax check
Session s = openSession();
s.beginTransaction();
s.createQuery( query ).list();
s.getTransaction().commit();
s.close();
}
@Test
@TestForIssue( jiraKey = "HHH-1689, SQM-30" )
public void testSubQueryAsCaseElseResultExpression() {
final String query = "SELECT CASE WHEN l.id > 1 THEN 1 ELSE (SELECT COUNT(r.id) FROM Root r) END FROM Leaf l";
// simple syntax check
Session s = openSession();
s.beginTransaction();
s.createQuery( query ).list();
s.getTransaction().commit();
s.close();
}
@Test
@TestForIssue( jiraKey = "HHH-1689, SQM-30" )
public void testSubQueryAsSimpleCaseTestExpression() {
final String query = "SELECT CASE (SELECT COUNT(r.id) FROM Root r) WHEN 1 THEN 1 ELSE 0 END FROM Leaf l";
// simple syntax check
Session s = openSession();
s.beginTransaction();
s.createQuery( query ).list();
s.getTransaction().commit();
s.close();
}
@Test
@TestForIssue( jiraKey = "HHH-1689, SQM-30" )
public void testSubQueryAsSimpleCaseWhenExpression() {
final String query = "SELECT CASE l.id WHEN (SELECT COUNT(r.id) FROM Root r) THEN 1 ELSE 0 END FROM Leaf l";
// simple syntax check
Session s = openSession();
s.beginTransaction();
s.createQuery( query ).list();
s.getTransaction().commit();
s.close();
}
}