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From "Fay Wang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (OPENJPA-793) Embeddables does not work properly with duplicate persistent field names
Date Thu, 27 Nov 2008 20:00:51 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Fay Wang updated OPENJPA-793:
-----------------------------

    Attachment: openjpa-793-3.patch

The logic to detect duplicate names in the embeddable is moved from EmbedFieldStrategy to
MappingRepository because openjpa  does not have complete informatioin about the metadata
when EmbedFieldStrategy.map is called. We need to wait until the meta data is processed completely
to detect if there is any duplicate field names in the embeddables (the same field name as
some field in its owning class, the same field name as some field in its own nested embeddable,
the same field name as some field in its sister embeddable contained in the same owning entity
class). 

> Embeddables does not work properly with duplicate persistent field names
> ------------------------------------------------------------------------
>
>                 Key: OPENJPA-793
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-793
>             Project: OpenJPA
>          Issue Type: Bug
>            Reporter: Fay Wang
>         Attachments: openjpa-793-1.patch, openjpa-793-3.patch, openjpa-793-testcase.patch,
openjpa-793.patch
>
>
> If an embeddable has the same persistent field names as its owning class, or two embeddables
contains the same field names and both are embedded in an entity class, openjpa will not work
properly due to the column name clashes. The fix is for openjpa to detect these situations
and throw an exception and for the application to use @AttributeOverride to specify unique
column names for the persistent fields in the embeddable.

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