Ignore DTMBuilder; it's obsolete code.
We currently have two fully-functional versions of DTM: DOM2DTM and
SAX2DTM. The former wraps a DTM API around an existing DOM data model; the
latter builds a "pure" DTM model based on SAX events. I haven't done enough
with SQL to have an opinion on which would be a better design reference for
building an SQL2DTM model.
The simplest (but not necessarily best) approach might be to write code
that reads the data returned from SQL, generates SAX events, and uses those
to build a SAX2DTM.
