Reads and provides access to a catalog, providing mappings of public
and system IDs to URIs, etc.
It is implemented as a SAX ContentHandler and is able to read
OASIS TR 9401 Catalogs <http://www.oasis-open.org/specs/a401.htm>
and OASIS XML Catalogs <http://www.oasis-open.org/committees/entity/spec.html>
Methods
Handle an element end event for the XML parser.
This is a SAX ContentHandler method.
Handle an element start event for the XML parser.
This is a SAX ContentHandler method.