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From Pinaki Poddar <ppod...@apache.org>
Subject Re: svn commit: r687806 - in /openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/jdbc/query: TestMultipleEntityProjection.java domain/Magazine.java domain/Publisher.java
Date Thu, 21 Aug 2008 22:14:12 GMT

My bad -- coding by ctrl-C, ctrl-V -- corrected now.


Craig L Russell wrote:
> 
> Hi Pinaki,
> 
> Nice test case. But I'm confused why there is a prolog with  
> TestLockGroupsWithHorizontalBaseType.java. May be good to remove this  
> bit...
> 
> Craig
> 
> On Aug 21, 2008, at 10:11 AM, ppoddar@apache.org wrote:
> 
>> Author: ppoddar
>> Date: Thu Aug 21 10:11:42 2008
>> New Revision: 687806
>>
>> URL: http://svn.apache.org/viewvc?rev=687806&view=rev
>> Log:
>> Add a test case for projection of multiple entity.
>>
>> Added:
>>    openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/TestMultipleEntityProjection.java
>>    openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/domain/Magazine.java
>>    openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/domain/Publisher.java
>>
>> Added: openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/ 
>> apache/openjpa/persistence/jdbc/query/ 
>> TestMultipleEntityProjection.java
>> URL:
>> http://svn.apache.org/viewvc/openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/jdbc/query/TestMultipleEntityProjection.java?rev=687806&view=auto
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> ======================================================================
>> --- openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/TestMultipleEntityProjection.java  
>> (added)
>> +++ openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/TestMultipleEntityProjection.java Thu  
>> Aug 21 10:11:42 2008
>> @@ -0,0 +1,161 @@
>> +/*
>> + * TestLockGroupsWithHorizontalBaseType.java
>> + *
>> + * Created on October 4, 2006, 5:03 PM
>> + *
>> + * To change this template, choose Tools | Template Manager
>> + * and open the template in the editor.
>> + */
>> +
>> +/*
>> + * Licensed to the Apache Software Foundation (ASF) under one
>> + * or more contributor license agreements.  See the NOTICE file
>> + * distributed with this work for additional information
>> + * regarding copyright ownership.  The ASF licenses this file
>> + * to you under the Apache License, Version 2.0 (the
>> + * "License"); you may not use this file except in compliance
>> + * with the License.  You may obtain a copy of the License at
>> + *
>> + * http://www.apache.org/licenses/LICENSE-2.0
>> + *
>> + * Unless required by applicable law or agreed to in writing,
>> + * software distributed under the License is distributed on an
>> + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
>> + * KIND, either express or implied.  See the License for the
>> + * specific language governing permissions and limitations
>> + * under the License.
>> + */
>> +package org.apache.openjpa.persistence.jdbc.query;
>> +
>> +import java.util.List;
>> +
>> +import javax.persistence.EntityManager;
>> +import javax.persistence.Query;
>> +
>> +import org.apache.openjpa.persistence.jdbc.query.domain.Magazine;
>> +import org.apache.openjpa.persistence.jdbc.query.domain.Publisher;
>> +import org.apache.openjpa.persistence.test.SingleEMFTestCase;
>> +
>> +/**
>> + * Tests multiple entities in projection are returned with both  
>> inner and outer
>> + * joins.
>> + *
>> + * Originally reported in
>> + * 
>> "http://n2.nabble.com/Selecting-multiple-objects---bug--tc732941.html 
  ">
>> + * OpenJPA mailing list 
>> + *
>> + * @author Pinaki Poddar
>> + *
>> + */
>> +public class TestMultipleEntityProjection extends SingleEMFTestCase {
>> +	private static boolean INNER_JOIN = true;
>> +	private static String[][] MAGAZINE_PUBLISHER_NAME_PAIRS = {
>> +		new String[] {"Times",      "Publisher-0"},
>> +		new String[] {"Times Life", "Publisher-1"},
>> +		new String[] {"Times Kid",  null},
>> +		new String[] {"Newsweek",   "Publisher-3"},
>> +		new String[] {"People",     null},
>> +		new String[] {"Nature",     "Publisher-5"},
>> +		new String[] {"MIT Review", "Publisher-6"},
>> +		new String[] {"Wired",      "Publisher-7"},
>> +		
>> +	};
>> +	
>> +	public void setUp() {
>> +		super.setUp(CLEAR_TABLES, Magazine.class, Publisher.class);
>> +		createData();
>> +	}
>> +
>> +	/**
>> +	 * Create Magazine and associate Publisher unless its name is null.
>> +	 */
>> +	void createData() {
>> +		EntityManager em = emf.createEntityManager();
>> +		em.getTransaction().begin();
>> +		for (int i = 0; i < MAGAZINE_PUBLISHER_NAME_PAIRS.length; i++) {
>> +			String magName = MAGAZINE_PUBLISHER_NAME_PAIRS[i][0];
>> +			String pubName = MAGAZINE_PUBLISHER_NAME_PAIRS[i][1];
>> +			Magazine mag = new Magazine();
>> +			mag.setName(magName);
>> +			if (pubName != null) {
>> +				Publisher pub = new Publisher();
>> +				pub.setName(pubName);
>> +				mag.setPublisher(pub);
>> +				em.persist(pub);
>> +			}
>> +			em.persist(mag);
>> +		}
>> +		em.getTransaction().commit();
>> +	}
>> +
>> +	public void testMultipleEntitiesInProjectionUsingOuterJoin() {
>> +		String jpql = "select m, p " +
>> +		              "from Magazine m left outer join m.publisher p " +
>> +		              "where ((:useName = false) or (m.name like :name))";
>> +		EntityManager em = emf.createEntityManager();
>> +		Query query = em.createQuery(jpql);
>> +		
>> +		String magKey = "Times";
>> +		query.setParameter("useName", true);
>> +		query.setParameter("name", '%'+magKey+'%');
>> +		
>> +		List result = query.getResultList();
>> +		
>> +		int expecetedCount = getExpecetedResultCount(magKey, !INNER_JOIN);
>> +		assertFalse(result.isEmpty());
>> +		assertEquals(expecetedCount, result.size());
>> +		for (Object o : result) {
>> +			assertTrue(o instanceof Object[]);
>> +			Object[] row = (Object[])o;
>> +			assertEquals(2, row.length);
>> +			assertTrue(row[0] instanceof Magazine);
>> +			assertTrue(row[1] == null || row[1] instanceof Publisher);
>> +			assertNotNull(row[0]);
>> +			assertEquals(((Magazine)row[0]).getPublisher(), row[1]);
>> +		}
>> +	}
>> +	
>> +	public void testMultipleEntitiesInProjectionUsingInnerJoin() {
>> +		String jpql = "select m, p " +
>> +		              "from Magazine m inner join m.publisher p " +
>> +		              "where ((:useName = false) or (m.name like :name))";
>> +		EntityManager em = emf.createEntityManager();
>> +		Query query = em.createQuery(jpql);
>> +		
>> +		String magKey = "Times";
>> +		query.setParameter("useName", true);
>> +		query.setParameter("name", '%'+magKey+'%');
>> +		
>> +		List result = query.getResultList();
>> +		
>> +		int expecetedCount = getExpecetedResultCount(magKey, INNER_JOIN);
>> +		assertFalse(result.isEmpty());
>> +		assertEquals(expecetedCount, result.size());
>> +		for (Object o : result) {
>> +			assertTrue(o instanceof Object[]);
>> +			Object[] row = (Object[])o;
>> +			assertEquals(2, row.length);
>> +			assertTrue(row[0] instanceof Magazine);
>> +			assertTrue(row[1] instanceof Publisher);
>> +			assertNotNull(row[0]);
>> +			assertNotNull(row[1]);
>> +			assertEquals(((Magazine)row[0]).getPublisher(), row[1]);
>> +		}
>> +	}
>> +	
>> +	/**
>> +	 * Count number of expected result based on inner/outer join  
>> condition and
>> +	 * the name of the Magazine.
>> +	 */
>> +	private int getExpecetedResultCount(String key, boolean innerJoin) {
>> +		int count = 0;
>> +		for (int i = 0; i < MAGAZINE_PUBLISHER_NAME_PAIRS.length; i++) {
>> +			String magName = MAGAZINE_PUBLISHER_NAME_PAIRS[i][0];
>> +			String pubName = MAGAZINE_PUBLISHER_NAME_PAIRS[i][1];
>> +			if (magName.indexOf(key) != -1)
>> +				if (!innerJoin || (innerJoin && pubName != null))
>> +					count++;
>> +		}
>> +		return count;
>> +	}
>> +}
>>
>> Added: openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/ 
>> apache/openjpa/persistence/jdbc/query/domain/Magazine.java
>> URL:
>> http://svn.apache.org/viewvc/openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/jdbc/query/domain/Magazine.java?rev=687806&view=auto
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> ======================================================================
>> --- openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/domain/Magazine.java (added)
>> +++ openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/domain/Magazine.java Thu Aug 21  
>> 10:11:42 2008
>> @@ -0,0 +1,61 @@
>> +/*
>> + * Licensed to the Apache Software Foundation (ASF) under one
>> + * or more contributor license agreements.  See the NOTICE file
>> + * distributed with this work for additional information
>> + * regarding copyright ownership.  The ASF licenses this file
>> + * to you under the Apache License, Version 2.0 (the
>> + * "License"); you may not use this file except in compliance
>> + * with the License.  You may obtain a copy of the License at
>> + *
>> + * http://www.apache.org/licenses/LICENSE-2.0
>> + *
>> + * Unless required by applicable law or agreed to in writing,
>> + * software distributed under the License is distributed on an
>> + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
>> + * KIND, either express or implied.  See the License for the
>> + * specific language governing permissions and limitations
>> + * under the License.
>> + */
>> +package org.apache.openjpa.persistence.jdbc.query.domain;
>> +
>> +import javax.persistence.*;
>> +
>> +/**
>> + * Simple persistent entity as a target of bi-directional one-to-one
>> + * association.
>> + *
>> + * @author Pinaki Poddar
>> + *
>> + */
>> +@Entity
>> +public class Magazine {
>> +	@Id
>> +	@GeneratedValue
>> +	private long id;
>> +
>> +	private String name;
>> +	
>> +	@OneToOne
>> +	private Publisher publisher;
>> +
>> +	public String getName() {
>> +		return name;
>> +	}
>> +
>> +	public void setName(String name) {
>> +		this.name = name;
>> +	}
>> +
>> +	public long getId() {
>> +		return id;
>> +	}
>> +
>> +	public Publisher getPublisher() {
>> +		return publisher;
>> +	}
>> +
>> +	public void setPublisher(Publisher publisher) {
>> +		this.publisher = publisher;
>> +	}
>> +
>> +}
>>
>> Added: openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/ 
>> apache/openjpa/persistence/jdbc/query/domain/Publisher.java
>> URL:
>> http://svn.apache.org/viewvc/openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/jdbc/query/domain/Publisher.java?rev=687806&view=auto
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> = 
>> ======================================================================
>> --- openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/domain/Publisher.java (added)
>> +++ openjpa/trunk/openjpa-persistence-jdbc/src/test/java/org/apache/ 
>> openjpa/persistence/jdbc/query/domain/Publisher.java Thu Aug 21  
>> 10:11:42 2008
>> @@ -0,0 +1,50 @@
>> +/*
>> + * Licensed to the Apache Software Foundation (ASF) under one
>> + * or more contributor license agreements.  See the NOTICE file
>> + * distributed with this work for additional information
>> + * regarding copyright ownership.  The ASF licenses this file
>> + * to you under the Apache License, Version 2.0 (the
>> + * "License"); you may not use this file except in compliance
>> + * with the License.  You may obtain a copy of the License at
>> + *
>> + * http://www.apache.org/licenses/LICENSE-2.0
>> + *
>> + * Unless required by applicable law or agreed to in writing,
>> + * software distributed under the License is distributed on an
>> + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
>> + * KIND, either express or implied.  See the License for the
>> + * specific language governing permissions and limitations
>> + * under the License.
>> + */
>> +package org.apache.openjpa.persistence.jdbc.query.domain;
>> +
>> +import javax.persistence.*;
>> +
>> +/**
>> + * Simple persistent entity as a target of uni-directional one-to-one
>> + * association.
>> + *
>> + * @author Pinaki Poddar
>> + *
>> + */
>> +@Entity
>> +public class Publisher {
>> +	@Id
>> +	@GeneratedValue
>> +	private long id;
>> +
>> +	private String name;
>> +	
>> +	public String getName() {
>> +		return name;
>> +	}
>> +
>> +	public void setName(String name) {
>> +		this.name = name;
>> +	}
>> +
>> +	public long getId() {
>> +		return id;
>> +	}
>> +
>> +}
>>
>>
> 
> Craig L Russell
> Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
> 408 276-5638 mailto:Craig.Russell@sun.com
> P.S. A good JDO? O, Gasp!
> 
> 
>  
> 

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