Robert, In general I believe - after looking into source code for a few minutes - that the UnmarshalListener interface should be extended, adding a new method similar to your attributeProcessed(String, String) (though I am not sure whether this shouldn't be attributeProcessed(String, Object)).
Why not open a feature request at http://jira.codehaus.org/browse/CASTOR and we'll take it from there. Werner > -----Ursprüngliche Nachricht----- > Von: Robert La Ferla [mailto:[EMAIL PROTECTED] > Gesendet: Montag, 14. Mai 2007 19:35 > An: dev@castor.codehaus.org > Betreff: [castor-dev] AttributeListener interface > > I am preparing to port our software to use castor 1.1.1 and I have > one Castor customization that I think may be useful for the main > release. It allows you to specify an object in your application (a > delegate) that listens to attributes as they are being unmarshalled. > > I have created an interface called AttributeListener that defines a > single method: > > public interface AttributeListener { > public void processAttribute(String attName, String attValue) > } > > Simply implement this on a class in your application and tell the > unmarshaller to use your object as the attribute listener. When > objects are unmarshalled, your method gets called and gives you a > chance to monitor the attributes being loaded in. In the example > below, the "ID" attribute and it's value are stored in a map. After > the object has been fully unmarshalled, a substitution is performed > on the object. This is useful in an application which has a master > document that imports template documents. > > public MyClass implements AttributeListener { > > ... > > public void processAttribute(String attName, String attValue) { > if (attName.equals("ID") == true) { > String newValue; > > newValue = org.myproject.ObjectType.newObjectID(); > // key = old ID, value = new ID > oldIDtoNewIDMap.put(attValue, newValue); > } > } > > ... > } > > I am not aware of a way to do this without a customized Castor. If > there is enough interest, I will submit a patch. > > > > --------------------------------------------------------------------- > To unsubscribe from this list please visit: > > http://xircles.codehaus.org/manage_email --------------------------------------------------------------------- To unsubscribe from this list please visit: http://xircles.codehaus.org/manage_email
