Protecting against LinkageErrors from DFC

Unfortunately I've discovered the hard way that DFC can throw more than just DfException and RuntimeException. It turns out that DFC can also generate nasty throwables like LinkageError. The problem with throwables like LinkageError is that the catch clauses people commonly put in there code to catch and handle unexpected conditions generally do not catch LinkageError because it is derived from Error and is not derived from Exception.

The reason DFC can throw LinkageError is because of its BOF activities. The dynamic classloading related to BOF can throw these errors when there are configuration problems with a particular BOF module.

To protect against occurances you need to add a "catch" clause for Throwable like this:

    try
    {
        IDfFolder object = (IDfFolder) session.newObject(XdsxFolderType.TYPE_NAME);
        object.setObjectName(folder.getEntryUuid());
        object.save();
    }
    catch (DfException e)
    {
        // Do something with this exception
    }
    catch (Throwable e) // Because DFC can generate a couple nasty "Error" throwables
    {
        throw new RuntimeException(e);
    }