accessing ObjectStore graph changes [WAS reverting changes and displaying commited changes]

From: edward pedersson (cpsmadnes..ooglemail.com)
Date: Tue Nov 07 2006 - 11:51:43 EST

  • Next message: Bryan Lewis: "Re: accessing ObjectStore graph changes [WAS reverting changes and displaying commited changes]"

    Hi

    I am trying to display the changes in the object graph as granular as
    possible and I have come stuck in the objectStore. These methods and fields

        protected Map changes = new HashMap();

        ObjectStoreGraphDiff getChanges() {
            return new ObjectStoreGraphDiff(this);
        }

        Map getChangesByObjectId() {
            return changes;
        }

    are all encapsulated quite heavily and I have no access to them other than
    creating a class in the org.apache.cayenne.access either as a subclass of
    ObjectStore or a stand alone class with an objectStore reference.

    I can't see any other way to display any more useful information to the user
    other than the default DataObject.toString() which really only tells the
    user the object has changed but nothing more.

    Has any body tried to do this before? Many thanks for your help.

    e--

    ---------- Forwarded message ----------
    From: edward pedersson <cpsmadnes..ooglemail.com>
    Date: 09-Oct-2006 11:11
    Subject: reverting changes and displaying commited changes
    To: Cayenne Users <cayenne-use..ncubator.apache.org>

    Hi

    I have built an application using Cayenne and Tapestry running under
    Tomcat on a Linux server. I am using the latest released versions of
    all of the above.

    I would like to be able to display to the user the current changes in
    the DataContext and allow the user to revert individual changes. I
    would also like them to be able to see what values the object had
    before the change.

    I have read the documentation and thought about having nested contexts
    but at times I would have to deal with 50+ context so it seems a bit
    unmanageable.

    Any thought would be most helpful.

    Thanks in advance. 

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