HHH-8578 correct DeleteExecutor's use of where-clause

hibernate-core/src/main/java/org/hibernate/hql/internal/ast/exec/DeleteExecutor.java

@@ -64,13 +64,21 @@ public class DeleteExecutor extends BasicExecutor {
 		final SessionFactoryImplementor factory = walker.getSessionFactoryHelper().getFactory();
 		final Dialect dialect = factory.getDialect();
 		
-		final DeleteStatement deleteStatement = ( DeleteStatement ) walker.getAST();
-		final AST whereClause = deleteStatement.getWhereClause();
-		
 		try {
+			final DeleteStatement deleteStatement = ( DeleteStatement ) walker.getAST();
+			
+			final String idSubselectWhere;
+			if (deleteStatement.hasWhereClause()) {
+				final AST whereClause = deleteStatement.getWhereClause();
 				final SqlGenerator gen = new SqlGenerator( factory );
 				gen.whereClause( whereClause );
 				parameterSpecifications = gen.getCollectedParameters();
+				idSubselectWhere = gen.getSQL().length() > 7 ? gen.getSQL() : "";
+			}
+			else {
+				parameterSpecifications = new ArrayList<ParameterSpecification>();
+				idSubselectWhere = "";
+			}
 			
 			// If many-to-many, delete the FK row in the collection table.
 			for ( Type type : persister.getPropertyTypes() ) {
@@ -86,7 +94,6 @@ public class DeleteExecutor extends BasicExecutor {
 									" the constraints or manually clear the associations prior to deleting the entities." );
 						}
 						else {
-							final String idSubselectWhere = gen.getSQL().length() > 7 ? gen.getSQL() : "";
 							final String idSubselect = "(select "
 									+ StringHelper.join( ", ", persister.getIdentifierColumnNames() ) + " from "
 									+ persister.getTableName() + idSubselectWhere + ")";

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

@@ -30,9 +30,7 @@ import static org.junit.Assert.fail;
 
 import java.util.ArrayList;
 import java.util.Date;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 import junit.framework.AssertionFailedError;
 
@@ -73,6 +71,10 @@ public class BulkManipulationTest extends BaseCoreFunctionalTestCase {
 		};
 	}
 
+	protected Class<?>[] getAnnotatedClasses() {
+		return new Class<?>[] { Farm.class, Crop.class };
+	}
+
 	@Test
 	public void testDeleteNonExistentEntity() {
 		Session s = openSession();
@@ -1193,11 +1195,48 @@ public class BulkManipulationTest extends BaseCoreFunctionalTestCase {
 	}
 	
 	@Test
-	@TestForIssue( jiraKey = "HHH-1917" )
+	@TestForIssue( jiraKey = "HHH-8476" )
 	public void testManyToManyBulkDelete() {
 		Session s = openSession();
 		Transaction t = s.beginTransaction();
 
+		Farm farm1 = new Farm();
+		farm1.setName( "farm1" );
+		Crop crop = new Crop();
+		crop.setName( "crop1" );
+		farm1.setCrops( new ArrayList() );
+		farm1.getCrops().add( crop );
+		s.save( farm1 );
+
+		Farm farm2 = new Farm();
+		farm2.setName( "farm2" );
+		farm2.setCrops( new ArrayList() );
+		farm2.getCrops().add( crop );
+		s.save( farm2 );
+		
+		s.flush();
+		
+		try {
+			s.createQuery( "delete from Farm f where f.name='farm1'" ).executeUpdate();
+			assertEquals( s.createQuery( "from Farm" ).list().size(), 1 );
+			s.createQuery( "delete from Farm" ).executeUpdate();
+			assertEquals( s.createQuery( "from Farm" ).list().size(), 0 );
+		}
+		catch (ConstraintViolationException cve) {
+			fail("The join table was not cleared prior to the bulk delete.");
+		}
+		finally {
+			t.rollback();
+			s.close();
+		}
+	}
+	
+	@Test
+	@TestForIssue( jiraKey = "HHH-1917" )
+	public void testManyToManyBulkDeleteMultiTable() {
+		Session s = openSession();
+		Transaction t = s.beginTransaction();
+
 		Human friend = new Human();
 		friend.setName( new Name( "Bob", 'B', "Bobbert" ) );
 		s.save( friend );
@@ -1210,19 +1249,10 @@ public class BulkManipulationTest extends BaseCoreFunctionalTestCase {
 		
 		s.flush();
 		
-		Zoo zoo = new Zoo();
-		Map directors = new HashMap();
-		directors.put( brett.getId().toString(), brett );
-		zoo.setDirectors( directors );
-		s.save( zoo );
-		
-		s.flush();
-		
 		try {
-			// non-multitable
-			s.createQuery( "delete from Zoo" ).executeUpdate();
 			// multitable (joined subclass)
 			s.createQuery( "delete from Human" ).executeUpdate();
+			assertEquals( s.createQuery( "from Human" ).list().size(), 0 );
 		}
 		catch (ConstraintViolationException cve) {
 			fail("The join table was not cleared prior to the bulk delete.");

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

@@ -0,0 +1,69 @@
+/* 
+ * Hibernate, Relational Persistence for Idiomatic Java
+ * 
+ * JBoss, Home of Professional Open Source
+ * Copyright 2013 Red Hat Inc. and/or its affiliates and other contributors
+ * as indicated by the @authors tag. All rights reserved.
+ * See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * 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, v. 2.1.
+ * This program is distributed in the hope that it will be useful, but WITHOUT A
+ * 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,
+ * v.2.1 along with this distribution; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301, USA.
+ */
+package org.hibernate.test.hql;
+
+import java.util.List;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.ManyToMany;
+
+/**
+ * @author Brett Meyer
+ */
+@Entity
+public class Crop {
+
+	@Id @GeneratedValue
+	private long id;
+	
+	private String name;
+	
+	@ManyToMany(mappedBy = "crops", cascade = CascadeType.ALL)
+	private List<Farm> farms;
+
+	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 List<Farm> getFarms() {
+		return farms;
+	}
+
+	public void setFarms(List<Farm> farms) {
+		this.farms = farms;
+	}
+
+}

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

@@ -0,0 +1,68 @@
+/* 
+ * Hibernate, Relational Persistence for Idiomatic Java
+ * 
+ * JBoss, Home of Professional Open Source
+ * Copyright 2013 Red Hat Inc. and/or its affiliates and other contributors
+ * as indicated by the @authors tag. All rights reserved.
+ * See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * 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, v. 2.1.
+ * This program is distributed in the hope that it will be useful, but WITHOUT A
+ * 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,
+ * v.2.1 along with this distribution; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA  02110-1301, USA.
+ */
+package org.hibernate.test.hql;
+
+import java.util.List;
+
+import javax.persistence.CascadeType;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.ManyToMany;
+
+/**
+ * @author Brett Meyer
+ */
+@Entity
+public class Farm {
+
+	@Id @GeneratedValue
+	private long id;
+	
+	private String name;
+	
+	@ManyToMany(cascade = CascadeType.ALL)
+	private List<Crop> crops;
+
+	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 List<Crop> getCrops() {
+		return crops;
+	}
+
+	public void setCrops(List<Crop> crops) {
+		this.crops = crops;
+	}
+}