[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2680) Blobs not updated on Session.merge() for detached instances

[Chris Bredesen (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_29800 ] 

Chris Bredesen commented on HHH-2680:
-------------------------------------

A workaround is to manually copy the BLOB data after the merge. Line 94 shows the bug:

        session.merge(domain); // changes blob value to 44

Changing it to this avoids the problem:

        Domain merged = (Domain) session.merge(domain);
        merged.setBlob(Hibernate.createBlob(domain.getBlob().getBinaryStream()));

> Blobs not updated on Session.merge() for detached instances
> -----------------------------------------------------------
>
>                 Key: HHH-2680
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2680
>             Project: Hibernate3
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.2.2, 3.2.4.sp1
>         Environment: Windows XP Prof., Java 1.5_010, HSQLDB 1.8.0
>            Reporter: Timo Thomas
>         Attachments: BlobTest.zip
>
>
> Blob columns are not updated when a detached instance is saved at the session with merge(). See attached TestCase.

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