Re: Raising an exception in a callback

From: Alexander Lamb (dev) ("Alexander)
Date: Tue Feb 26 2008 - 08:04:32 EST

  • Next message: Andrus Adamchik: "Re: Raising an exception in a callback"

    I can't seem to get the original exception.

    In my Object:

            public void checkBeforeDelete() {
                    if(getInvoiced() != null && getInvoiced())
                            throw new RuntimeException("*** Invoice created " +
    getFormattedCreationDate() + " is invoiced, can't delete");
            }

    Then I catch the error the following way:

                    try {
                            _session.getDataContext().deleteObject(invoice);
                            _session.getDataContext().commitChanges();
                    } catch(Exception e) {
                            System.out.println("***** CAN'T DELETE INVOICE: " + e.getMessage());
                            _session.getDataContext().rollbackChanges();
                    }

    e.getCause() will give me an InvocationTargetException.

    Alex

    Le 26 févr. 08 à 10:56, Andrus Adamchik a écrit :

    >
    > On Feb 26, 2008, at 11:45 AM, Alexander Lamb (dev) wrote:
    >
    >> Hello List,
    >>
    >> I want to prevent a delete of an object if certain attributes have
    >> certain values (e.g. do not delete an invoice which has already
    >> been sent).
    >>
    >> I registered the callback in the Modeler. Works fine.
    >>
    >> I do my test in the callback function I defined, it works fine.
    >>
    >> Except that to "stop" the delete, I raise a RuntimeException (I
    >> don't see any other way). It works and is catched by the delete.
    >> However I do not get my exception, but an exception Cayenne has
    >> generated.
    >>
    >> What is the correct way to raise an exception and transfer up the
    >> correct error message?
    >>
    >> Thanks,
    >>
    >> Alex
    >
    > Without looking at the code, IIRC CayenneRuntimeException.getCause()
    > should store your exception.
    >
    > Andrus

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