ModSAX: Proposed Core Handlers

David Megginson david at
Wed Mar 10 01:12:14 GMT 1999

My current proposal for the ModParser interface includes the following 
method (ModHandler is an empty interface):

  public abstract void setHandler (String handlerID, ModHandler handler)
    throws SAXNotSupportedException;

I propose the following core handlers, with the understanding that SAX 
parsers are not required to support any of them (they are free to
throw a SAXNotSupportedException):

ModSAX Core Handlers

(All handler IDs correspond to a specific interface.) <LexicalHandler>
  Receive callbacks for comments, CDATA sections, and (possibly)
  entity references. <DTDDeclHandler>
  Receive callbacks for element, attribute, and (possibly) parsed
  entity declarations. <NamespaceHandler>
  Receive callbacks for the start and end of the scope of each
  namespace declaration.

I'm not certain, but it might make sense to replace the third one with 
a read-only parse-time property.

All the best,


David Megginson                 david at

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