retrieving data of a previous version.

ravindhranath

Hi all,

How to obtain the data of the previous versions Objects ?

I had done this using IDFSysObject.getVersions method.

I had obtained the Object IDs of the previous versions, but when i obtain the value for the object Id i.e using

dfCollection = parentIDFSysObject.getVersions("r_object_id");
            while (dfCollection.next())
            {
                dfTypedObject = dfCollection.getTypedObject();
                rObjectId = dfTypedObject.getString("r_object_id");
                newSysObject = (IDfSysObject) session.getObjectByQualification("dm_document where r_object_id ='"
                    + rObjectId + "'");
            }

the value of the newSysObject is null

is it the right way to do ?

any clue  ??

bacham2

I see what the problem is. The DQL query that you use to retrieve the document version will not work for versions other than CURRENT. You need to add the ALL clause to get it to work. However, your code is more complicated than it needs to be. Change it to the following:

            dfCollection = parentIDFSysObject.getVersions("r_object_id");
            while (dfCollection.next())
            {

               newSysObject = (IDfSysObject) session.getObject(dfCollection.getId("r_object_id"));
            }