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https://issues.apache.org/jira/browse/OPENJPA-130?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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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
Modified:
- 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: https://issues.apache.org/jira/browse/OPENJPA-130
> 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 java.io.InputStream (for BLOBs) and
> java.io.Reader (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.)
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