To change subject of non-CURRENT versions using DFS?

My application works with Documentum through DFS. I have met the following task: my application has to update Subject of all versions of given dm_document. But the Update method in DFS allows to do it only for CURRENT version; and I see nothing more appropriated in DFS. Is there a way to do this (using DFS)?

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mszurap

ObjectService.update indeed updates only the current version of the object. But you can still use QueryService.execute method with an update DQL:

update dm_document (all) objects set subject='your_subject' where i_chronicle_id='r_object_id_of_1.0_version'

GlenLantz

Thank you for the answer

because of I have used DFS calls only to modify content of Documentum servers, I want to know: how safe is the way you have proposed? Is there a document that describes: how and in which cases it is safe to modify the content using DQL?

mszurap

Hi,

You can't update the content of the objects through DQL. Maybe except XML documents if they have an XML Application related, but I have not tried that.

GlenLantz

>You can't update the content

sorry, I said wrong: I meant properties (like the r_creation_date); not content.

mszurap

Of course, you can't update system attributes (starting with r_), like r_creation_date, but you can updpate any other attribute with DQL*. It's completely supported.

* - restrictions may still apply: can't update a locked object (locked by somebody else), can't update immutable attributes on non-current objects, etc.