It subclasses BigInteger to get around some of the restrictions we have about what can be mapped as a Basic. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Search everywhere only in this topic. If not, what code would you write to get the stream?

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You can override the schema for the entire persistence unit using an orm.

BlobProxy which does goes around this. Does the connection you initially read it with need to stay open in order to get the stream?

EclipseLink JPA With PostgreSQL

I need to store quite large binaries in my DB so storing them as byte-arrays PG’s bytea doesn’t work for me, I need to work with streams. Search everywhere only in this topic. I’m testing throughout the summer and see how it goes. Nov 21 ’12 at 8: You could add to it as needed. Post as a guest Name. Currently, by default, when reading EclipseLink will read all the data in the BLOB by default – the reason is because after we are done with the connection, we will not have that option anymore.


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By using our site, you acknowledge that you have read and understand postgrexql Cookie PolicyPrivacy Policyand our Terms of Service. A Customizer like this should workaround the Read issue: Do you need a connection for the duration of the postgrssql that you use it?

There are a couple of parts that are a little hacky, so we still should add an enhancement request to make this work more smoothly.

It looks like that code makes EL able to read blobs, but not to write them, or generate correct schema. I am still looking in to the best way to get around that issue. Do you keep the stream open for a long period of time? On Jun 24,at 4: I don’t understand the question, what do you mean?

EclipseLink – Users – Blob and PostgreSQL

When it comes to handelign LOBs I need something like this: I ran into something similar with HSQL. Do you make any use of the LOB object aside from during a read or a write in a transaction? I probably could change schema via native SQL directly but is postggresql a way to bind schema to persistence unit?


I want to access schema 00 or 01 in testdb database. What I need is large files not fit in RAM to be part of a transaction when writing data.


Some key points about the example: There is quite alot of functionality that can be overridden through subclassing our various database platforms. Sign up or log in Sign up using Google. In that case I ended up unwrapping the Eclipselink session from the injected EntityManager, getting a connection and creating a prepared eclipselinm whose ResultSet I iterated, grabbing the blob stream like so:.

Stack Overflow works best with JavaScript enabled. Which in HSQL’s case has pretty big implications. If so, that will be a challenge given the constraints of the JPA world. Is the code attached to this eclipdelink any help?

In reply to this post by Andreas Joseph Krogh. Are there any examples around using PG with Blobs, using streams not byte[]?