HHH-9090 - HQL: parser is trying to reuse parent implied join for subquery

(cherry picked from commit 133f0825a3)

hibernate-core/src/test/java/org/hibernate/test/hql/SubQueryTest.java

@@ -0,0 +1,101 @@
+/*
+ * 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.test.hql;
+
+import java.util.Set;
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+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;
+
+/**
+ * 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
+		public Integer id;
+		public String rootName;
+		@OneToOne
+		public Branch branch;
+	}
+
+
+	@Entity( name = "Branch" )
+	@Table( name = "BRANCH" )
+	public static class Branch {
+		@Id
+		public Integer id;
+		public String branchName;
+
+		@OneToMany
+		public Set<Leaf> leaves;
+	}
+
+	@Entity( name = "Leaf" )
+	@Table( name = "LEAF" )
+	public static class Leaf {
+		@Id
+		public Integer id;
+		public String leafName;
+	}
+
+	@Override
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class[] { Root.class, Branch.class, Leaf.class };
+	}
+
+	@Test
+	@TestForIssue( jiraKey = "HHH-9090" )
+	@FailureExpected( jiraKey = "HHH-9090" )
+	public void testCorrelatedJoin() {
+		Session s = openSession();
+		s.beginTransaction();
+
+		// simple syntax check of the generated SQL
+		final String qry = "from Root as r " +
+				"where r.branch.branchName = 'some branch name' " +
+				"  and exists( from r.branch.leaves as s where s.leafName = 'some leaf name')";
+		s.createQuery( qry ).list();
+
+		s.getTransaction().commit();
+		s.close();
+	}
+}