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Posted to dev@openjpa.apache.org by "Maria Jurcovicova (Resolved) (JIRA)" <ji...@apache.org> on 2012/02/23 14:35:48 UTC
[jira] [Resolved] (OPENJPA-2125) Default join table name does not
follow JPA v2 specification
[ https://issues.apache.org/jira/browse/OPENJPA-2125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Maria Jurcovicova resolved OPENJPA-2125.
----------------------------------------
Resolution: Invalid
Ah OK, it is true that it can be read that way. Thank you for the answer.
I'm resolving the issue as 'invalid'.
> Default join table name does not follow JPA v2 specification
> ------------------------------------------------------------
>
> Key: OPENJPA-2125
> URL: https://issues.apache.org/jira/browse/OPENJPA-2125
> Project: OpenJPA
> Issue Type: Bug
> Components: jdbc, jpa
> Affects Versions: 2.1.1
> Reporter: Maria Jurcovicova
>
> According to JPA v2 specification, two types of relationship use join table to keep relational data:
> * many-to-many described in page 48,
> * unidirectional one-to-many described in page 50.
> In both cases, the joining table name should be composed from entity names (e.g. class names) by default. OpenJPA uses entity table names by default.
> Quote from JPA v2 specification:
> "Entity A is mapped to a table named A.
> Entity B is mapped to a table named B.
> There is a join table that is named A_B (owner name first). The join table has ..."
> Example entities:
> @Entity
> @Table(name="tblMtmOwner")
> public class MtmOwner {
> @Id
> private long id;
> private String name;
> @ManyToMany
> private Collection<MtmInverse> inverses = new ArrayList<MtmInverse>();
> }
>
> @Entity
> public class MtmInverse{
> @Id
> private long id;
> @ManyToMany(mappedBy="inverses")
> @MapKey(name="name")
> private Map<String, MtmOwner> owners = new HashMap<String, MtmOwner>();
> }
> Expected join table name: MtmOwner_MtmInverse
> OpenJPA join table name: tblMtmOwner_MtmInverse
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