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https://issues.apache.org/jira/browse/OLINGO-185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13957581#comment-13957581
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Chandan V.A commented on OLINGO-185:
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Hi Carl,
Please refer to the updated proposal at -
https://wiki.apache.org/Olingo/ojp-handling-blob-proposal.
A new call back interface OnJPAWriteContent is introduced with the Library
which should be used for providing JPA provider specific implementation of Blob
and Clob objects. The reference scenario which uses EclipseLink as JPA provider
and HSQL DB as the underlying DB platform has following implementation for
supporting HSQL DB specific Blob and Clob objects.
A) JPA Converters
(org.apache.olingo.odata2.jpa.processor.ref.converter.BlobToByteConverter) to
convert a byte based DB column to Blob based Entity Property.
B) A call back implementation
org.apache.olingo.odata2.jpa.processor.ref.extension.OnDBWriteContent to
instantiate Blob and Clob objects.
I hope this should address the use case. Can you please check whether this
works for your Hibernate based providers.
Thanks
Kind regards
Chandan
> support for Clob
> ----------------
>
> Key: OLINGO-185
> URL: https://issues.apache.org/jira/browse/OLINGO-185
> Project: Olingo
> Issue Type: New Feature
> Components: odata2-jpa
> Affects Versions: V2 1.2.0
> Reporter: Carl J. Mosca
> Assignee: Chandan V.A
> Priority: Blocker
> Labels: blob, clob, jpa
> Fix For: V2 1.3.0
>
> Attachments:
> org.apache.olingo.odata2.jpa.processor.core.access.model.JPATypeConverter.java.diff
>
>
> support for Clob (other BLOB types?) We have successfully processed these as
> String type
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