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How to get category attributes for older versions of the document

Scott_Lee

Hi,

I am trying to get category attributes for older versions of the documet. From API document, I thought I should get it from the Version object like below, but all I get is null. Please help.

       Iterator<Version> iterVersions = objEffectiveNode.getVersionInfo().getVersions().iterator();
       while (iterVersions.hasNext())
       {
           Version oVersion = iterVersions.next();
            if (oVersion.getNumber() == livelinkVersion) {
               objMetadata = oVersion.getMetadata();
               break;
            }
       }

Thanks,

Scott.

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sgrasley

Hi, Scott.

Category information is at the document (node) level, not the version level. It is not versioned in the same way.

Thanks,

Scott

Hans Stoop

Hi Scott,

Categories are defined for each document version. On the function menu of an older document version you have the categories tab to see the attribut evalues.

This is how it is in the webGUI. It could be that the webService interface only offers categories for documents themselves.

Hans

From: eLink Entry: Content Web Services Forum [mailto:otdncontentwebservices971forum@elinkkc.opentext.com]
Sent: Dienstag, 25. Juni 2013 14:32
To: eLink Recipient
Subject: How to get category attributes for older versions of the document

How to get category attributes for older versions of the document

Posted bysgrasley@opentext.com (Grasley, Scott) On 06-25-2013 08:30

Hi, Scott.

Category information is at the document (node) level, not the version level. It is not versioned in the same way.

Thanks,

Scott

[To post a comment, use the normal reply function]
Topic:	How to get category attributes for older versions of the document
Forum:	Content Web Services Forum
Content Server:	Knowledge Center

Appu_Nair1

While probably inefficient you could create a Live Report against llattrdata and you formulate it with nodeid=id.Then you will get a whole slew of info which again with some effort you can interpret as old version data.LR support was added to CWS/EWS only about recently.

Scott_Lee

Thanks. I could see the category attributes for each version from WebGUI. I could also get the latest category attribute from the Node level, use below code:

objMetadata = objEffectiveNode.getMetadata();

I made a guess when I found out that Version object also has the method getMetadata(). Hans, if you are right about java webService interface only support categories on the document level, then, I will have a tough time to get the categories for the older document versions.

Thanks,

Scott.

sgrasley

I wasn't aware that you could use the UI for versions to get older versions of the cats and atts. (Although I think if you change the cats and atts for a document without adding a version, you cannot access the previous version of the cats and atts -- but as we've just seen I've been known to be wrong.) Perhaps a bug should be logged against CWS.

Thanks,

Scott

sıɹɥɔ

I just ran into this issue, so I thought I'd leave a note for those finding this thread and looking for a solution.

It seems that getVersions of NodeVersionInfo doesn't populate the metadata for versions that it retrieves. (Perhaps this is for reasons of efficiency, I don't know.) So what you need to do is reload the version to access its metadata. In Java:

for (Version version: node.getVersionInfo().getVersions()) {    Metadata metadata = version.getMetadata();    if (metadata == null)        metadata = documentManagement.getVersion (version.getNodeID(), version.getNumber()).getMetadata()...

(Of course you can set that Metadata object into the loop Version or instead use the second Version being reloaded if you need a "whole" Version.)

Hope this helps future searchers,

-chris