openjpa-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Vermeulen (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (OPENJPA-2317) Criteria API doesn' generate LEFT OUTER JOIN in subquery as expected
Date Wed, 15 May 2013 14:03:16 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-2317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13658329#comment-13658329
] 

Vermeulen edited comment on OPENJPA-2317 at 5/15/13 2:01 PM:
-------------------------------------------------------------

Probably a duplicate of OPENJPA-2318 for which I believe I found the solution.
                
      was (Author: slowstrider):
    Probably a duplicate of OPENJPA-2317 for which I believe I found the solution.
                  
> Criteria API doesn' generate LEFT OUTER JOIN in subquery as expected
> --------------------------------------------------------------------
>
>                 Key: OPENJPA-2317
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2317
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: criteria
>    Affects Versions: 2.1.1
>         Environment: Windows/Oracle
>            Reporter: Lev
>
> I have 3 entity classes classes
> @Entity
> @Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
> public class DiscoveryObjectImpl implements DiscoveryObject {
> 	@Id
> 	private String id;
> 	public String getId() {
> 		return id;
> 	}
> 	public void setId(String id) {
> 		this.id = id;
> 	}
> }
> @Entity
> public class VirtualTableImpl extends DiscoveryObjectImpl {
> @OneToMany(mappedBy="table")
> 	private List<ColumnImpl> column = new ArrayList<ColumnImpl>();
> }
> @Entity
> public class ColumnImpl extends DiscoveryObjectImpl {
> @ManyToOne(cascade = CascadeType.PERSIST, optional=true)
> 	VirtualTableImpl table;
> }
> test code 
> public void test() {
> 		EntityManager em = OpenJPAPersistence.createEntityManagerFactory("Test", "test/persistence.xml").createEntityManager();
>         CriteriaBuilder cb = em.getCriteriaBuilder();
>         CriteriaQuery<VirtualTableImpl> cri = cb.createQuery(VirtualTableImpl.class);
>         Root<VirtualTableImpl> tbl = cri.from(VirtualTableImpl.class);
>         Subquery<Integer> sq = cri.subquery(Integer.class);
>         Root<VirtualTableImpl> tbl1 = sq.from(VirtualTableImpl.class);
>         Path<ColumnImpl> cols = tbl1.join("column", JoinType.LEFT);
>         sq.where(cb.isNull(cols), cb.equal(tbl1, tbl));
>         sq.select(cb.literal(new Integer(1)));
>         cri.where(cb.exists(sq));
>         em.createQuery(cri).getResultList();
> }
> persistence.xml
> <persistence xmlns="http://java.sun.com/xml/ns/persistence"
>     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>     xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
>     version="1.0">
>  <persistence-unit name="Test" transaction-type="RESOURCE_LOCAL">
>  	<provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>
>  	<class>com.ibm.infosphere.test.model.interfaces.impl.DiscoveryObjectImpl</class>
>  	<class>com.ibm.infosphere.test.model.interfaces.impl.VirtualTableImpl</class>
>  	<class>com.ibm.infosphere.test.model.interfaces.impl.ColumnImpl</class>
>  	<exclude-unlisted-classes>true</exclude-unlisted-classes> 			
> 	<properties>
> 			<property name="openjpa.Log" value="DefaultLevel=ERROR, Runtime=ERROR, Tool=ERROR,
SQL=TRACE, MetaData=ERROR"/>
> 			<property name="openjpa.DynamicEnhancementAgent"  value="false"/>
>             <property name="openjpa.RuntimeUnenhancedClasses" value="supported"/>
>             <property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
>             <property name="openjpa.InitializeEagerly" value="true"/>
>             <property name="openjpa.jdbc.DBDictionary" value="oracle"/>
>             <property name="openjpa.jdbc.DBDictionary" value="MaxTableNameLength=61"/>
>             <property name="openjpa.jdbc.DBDictionary" value="useWildCardForCount=true"/>
>             <property name="openjpa.jdbc.DBDictionary" value="JoinSyntax=sql92"/>
>  			<property name="openjpa.ConnectionURL" value="jdbc:oracle:thin:@localhost:1521:orcl"/>
> 			 
>     		<property name="openjpa.ConnectionDriverName" value="oracle.jdbc.driver.OracleDriver"/>

>       		<property name="openjpa.ConnectionUserName" value="********"/>
>       		<property name="openjpa.ConnectionPassword" value="*********"/>
>             <property name="openjpa.ConnectionFactoryProperties"    value="PrettyPrint=true,
PrettyPrintLineLength=80, PrintParameters=true"/>
>             <property name="openjpa.DataCache"                value="true"/>  
     
>             <property name="openjpa.RemoteCommitProvider"     value="sjvm"/>  
         
>             <property name="openjpa.jdbc.QuerySQLCache"       value="true(EnableStatistics=true)"/>
           
> 		</properties>
> </persistence-unit>
> </persistence>
> The SQL trace is as the following SELECT t2.id 
>     FROM VirtualTableImpl t2 
>     WHERE (EXISTS (SELECT ? FROM VirtualTableImpl t0 INNER JOIN ColumnImpl t1 ON 
>         t0.id = t1.TABLE_ID WHERE (t1.id IS NULL AND t0.id = t2.id))) 
> Please note that sub query contains INNER JOIN instead of LEFT OUTER JOIN

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message