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Blob question [message #387928]

Mon, 18 May 2009 21:21

hanys

Messages: 188
Registered: July 2009

Senior Member

Hello,

I have an Entity which I want to have a much data as its part.
And I don't want to have all data in the memory like using byte[].
Instead I want to use java.sql.Blob to store it.

How can I write a DAO object accessing the database for save/load using
EclipseLink and JPA?
Using hibernate it's done like Hibernate.createBlob.
How can I do it using EclipseLink?

I haven't found anything in google, that's why I am asking here.

Can you please help me.

BR,
Jan

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Re: Blob question [message #387937 is a reply to message #387928]

Tue, 19 May 2009 17:42

hanys

Messages: 188
Registered: July 2009

Senior Member

I found that JPA doesn't support streaming of blobs.

"Jan" <ahanys@seznam.cz> p

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Re: Blob question [message #387950 is a reply to message #387937]

Tue, 19 May 2009 19:46

James Sutherland

Messages: 1939
Registered: July 2009
Location: Ottawa, Canada

Senior Member

You best bet is probably to access through JDBC.

You could probably map an attribute of type Blob directly, but it may not
be very useful.

---
James
http://www.nabble.com/EclipseLink---Users-f26658.html

James : Wiki : Book : Blog : Twitter

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