[jira] Reopened: (OPENJPA-697) @VersionColumns annotation throws exception when multiple columns are specified

["Pinaki Poddar (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OPENJPA-697?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pinaki Poddar reopened OPENJPA-697:
-----------------------------------


A relevant use case for multi-column versioning is setting version columns across primary and secondary tables. The version strategy and schema definition does not address the case where the columns are spread across multiple tables.

> @VersionColumns annotation throws exception when multiple columns are specified
> -------------------------------------------------------------------------------
>
>                 Key: OPENJPA-697
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-697
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jpa
>    Affects Versions: 1.2.0
>            Reporter: Dinkar Rao
>            Assignee: Pinaki Poddar
>            Priority: Minor
>             Fix For: 1.3.0
>
>
> The OpenJPA manual very briefly talks about the @VersionColumns annotation, but its usage is not clear. I have an entity that tries to use this annotation (below), but I get back an exception when I run the mapping tool against it:
> "Exception in thread "main" <openjpa-1.3.0-SNAPSHOT-runknown fatal user error>
> org.apache.openjpa.util.MetaDataException: For "entities.Employee<version>", expected 1 column(s),
> but found 2."
> @Entity
> @VersionColumns({@VersionColumn(name="vcol1"),@VersionColumn(name="vcol2")})
> @SecondaryTable(name="EADDRESS", pkJoinColumns=@PrimaryKeyJoinColumn(name="EMPID"))
> public class Employee {
>         @Id @GeneratedValue(strategy=GenerationType.AUTO)
>         private int empid;
>         private String name;
>        
>         @Column(table="EADDRESS")
>         private String street1;
>         @Column(table="EADDRESS")
>         private String street2;
>         @Column(table="EADDRESS")
>         private String city;
>         @Column(table="EADDRESS")
>         private int zipcode;
> }

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