[jira] Commented: (OPENJPA-1837) ElementCollection contains Embeddable with blob value fails in Oracle

["Fay Wang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OPENJPA-1837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12922602#action_12922602 ] 

Fay Wang commented on OPENJPA-1837:
-----------------------------------

The two flags in OracleDictionary:

        maxEmbeddedBlobSize = 4000;
        maxEmbeddedClobSize = 4000;

are intended for applications using pre-11.2.0.1 jdbc driver. When these flags are set, MaxEmbeddedLobFieldStrategy will be used as for any Lob fields. The Lob field can appear in an Embeddable, which may be an element in the ElementCollection. It can also be a field in an entity.  The above exception is thrown when the Lob field is in an Embeddable and the embeddable is an element of an ElementCollection.

The limitation of 4000 is fixed in jdbc driver 11.2.0.1. The patch for this JIRA is to fix the exception for applications which still use pre-11.2.0.1 driver. 

> ElementCollection contains Embeddable with blob value fails in Oracle
> ---------------------------------------------------------------------
>
>                 Key: OPENJPA-1837
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1837
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jdbc
>    Affects Versions: 2.0.1
>            Reporter: Fay Wang
>            Assignee: Fay Wang
>             Fix For: 2.0.1
>
>         Attachments: Openjpa-1837-1.patch, OPENJPA-1837.patch
>
>
> An element collection which contains Embeddable with Lob field fails with Oracle:
> <openjpa-2.1.0-SNAPSHOT-runknown fatal user error> org.apache.openjpa.persistence.ArgumentException: "org.apache.openjpa.persistence.jdbc.annotations.EmbedOwner.embedCollection<element:class org.apache.openjpa.persistence.jdbc.annotations.EmbedValue>" is mapped as embedded, but embedded field "org.apache.openjpa.persistence.jdbc.annotations.EmbedOwner.embedCollection.org.apache.openjpa.persistence.jdbc.annotations.EmbedValue.blob" is not embeddable. Embedded element/key/value types are limited to simple fields and direct relations to other persistent types. 

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