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| Re: [CDO] Allowing (or ignoring) duplicate objects for certain types [message #906415 is a reply to message #906377] |
Sat, 01 September 2012 11:40  |
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Hi Shahim,
Please ask CDO questions on the EMF forum.
Comments below...
Am 01.09.2012 11:25, schrieb Shahim Essaid:
> Hi all,
>
> Is it possible to extend or modify the CDO client and server API to allow for new objects with the same CDOID as one
> already in the repository?
No, that's bad.
> I have few immutable object types that represent statements (logical axioms) and the CDOID is a SHA1 digest of the
> statement type and the named entities in the statement. I want to allow for adding new statements by clients even if
> the same statement is already in the repository.
That's a problem you must solve on the layer where you add these things. You can reuse objects by looking them up by
their SHA1 but you must not simply re-add them and hope that CDO recognizes their identical content.
> In other words, there is only one copy of an instance of a specific statement (because same statements will have the
> same SHA1) and any object that refers to an identical statement should refer to the one already in the repository. Is
> this possible?
No.
Cheers
/Eike
----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper
Cheers
/Eike
----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper
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