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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-2343) Version field returns null when explicity projected from a JOIN in SELECT clause
Date Thu, 17 Oct 2013 20:00:42 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-2343?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13798340#comment-13798340
] 

ASF subversion and git services commented on OPENJPA-2343:
----------------------------------------------------------

Commit 1533235 from [~jpaheath] in branch 'openjpa/branches/2.3.x'
[ https://svn.apache.org/r1533235 ]

OPENJPA-2343: Version field returns null when explicity projected from a JOIN in SELECT clause
- based fix off of patch provided by Howard Kelsey.  Merged 2.2.x commit to 2.3.x.

> Version field returns null when explicity projected from a JOIN in SELECT clause
> --------------------------------------------------------------------------------
>
>                 Key: OPENJPA-2343
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2343
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: query
>    Affects Versions: 2.3.0, 2.2.1
>            Reporter: howard kelsey
>            Assignee: Rick Curtis
>             Fix For: 2.3.0
>
>         Attachments: OPENJPA-2343-2.2.1.x.patch
>
>
> With these entities: 
> @Entity
> public class Foo {
>     private int id;
>     private int version;
>     @Id
> 	public int getId() {
> 		return id;
> 	}
> 	public void setId(int id) {
> 		this.id = id;
> 	}
> 	public void setVersion(int version) {
> 		this.version = version;
> 	}	
> 	@Version
> 	public int getVersion() {
> 		return this.version;
> 	}
> }
> @Entity
> public class Bar{
> 	private int id;
> 	private Foo foo;
>     @Id
> 	public int getId() {
> 		return id;
> 	}
> 	public void setId(int id) {
> 		this.id = id;
> 	}
>     public void setFoo(Foo foo) {
>         this.foo = foo;
>     }
>     @ManyToOne
>     public Foo getFoo() {
>         return foo;
>     }
> }
> Insert a record for each associating foo with bar.
> Foo foo = new Foo();
> em.getTransaction().begin(); 
> em.persist(foo); 
> Bar bar = new Bar();
> bar.setFoo(foo);
> em.persist(bar);
> em.getTransaction().commit(); 
> em.close(); 
> queries 
> select bar.id as id, foo as foo from Bar bar join bar.foo foo
> The version field is available via foo.getVersion()
> select bar.id as id, foo.version as version from Bar bar join bar.foo foo
> version is always null.
> By enabling the jdbc debug I can see that the actual SQL being run is correct but the
value is just not hydrated.



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