openjpa-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ignacio Andreu (JIRA)" <>
Subject [jira] Updated: (OPENJPA-130) Streaming LOB support
Date Thu, 20 Mar 2008 21:03:24 GMT


Ignacio Andreu updated OPENJPA-130:

    Attachment: OPENJPA-130-2.patch

This patch corrects some bugs and add new test cases.

New test cases & fixed bugs:

    - testUpdateWithNull
    - testUpdateANullObjectWithoutNull


    - blobBufferSize and clobBufferSize. I've increased the buffer value.

BTW, I'm trying to add Streaming support to Derby, my approach is not finished yet, It loads
the results from the database when I use the load() method but it fails when I try to load
with a Query. Next week i will put here my approach.

> Streaming LOB support
> ---------------------
>                 Key: OPENJPA-130
>                 URL:
>             Project: OpenJPA
>          Issue Type: New Feature
>          Components: datacache, jdbc, jpa, kernel
>            Reporter: Patrick Linskey
>            Assignee: Ignacio Andreu
>             Fix For: 1.1.0
>         Attachments: OPENJPA-130-2.patch, OPENJPA-130.patch, OPENJPA-130.patch
> BLOB and CLOB fields can only be mapped in their entirety in OpenJPA. It would be nice
to support fields of type (for BLOBs) and (for CLOBs).
> The usage pattern could look like so:
> @Entity
> public class Employee {
>     ...
>     private InputStream photoStream;
>     public void setPhotoStream(InputStream in) {
>         photoStream = in;
>     }
>     public InputStream getPhotoStream() {
>         return photoStream;
>     }
> }
> So, when the user wants to provide a stream, she will set the InputStream field, and
when the user wants to obtain a stream, she will use the field.
> The behavior of such an implementation would be a bit different than how other fields
work, in that if the user set the stream and then consumed it within a single transaction,
presumably no data would be written out to the database at commit time. But that is the nature
of streams.
> (FTR, I think that I stole this idea from an email Craig Russell sent out years ago.)

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message