IBM
Software Group | Rational software
© 2004 IBM
Corporation
7
Why a DOM?
§Although flexible, the
callback mechanism was hard to define
4Unable to provide all
information that every possible client would require
4Often unable to
determine parser context for certain constructs
4Clients had added
complexity to manage their own data
4Parser had added
complexity to provide enough data
•Parse mode
proliferation
§Need to address
scalability
4Cut down on the amount
of parsing we need to do
4Can we reuse parse
results?
§Need data structures to
help programmatically make changes to the source code