SAX: multiple handlers

David Megginson ak117 at
Tue Feb 24 14:24:39 GMT 1998

In a private message, one SAX user raised the issue again of multiple
handlers.  The user suggested the situation where someone wants to
extract information from a document _and_ copy the document to an
OutputStream at the same time: for a clean implementation, each of
these should be in a different handler.

During the last round, most people vetoed this idea.  Here it is
again, though, for your consideration:

  package org.xml.sax;

  public interface Parser {

    public void addEntityHandler (EntityHandler handler);
    public void removeEntityHandler (EntityHandler handler);

    public void addDocumentHandler (DocumentHandler handler);
    public void removeDocumentHandler (DocumentHandler handler);

    public void addErrorHandler (ErrorHandler handler);
    public void removeErrorHandler (ErrorHandler handler);

    public void parse (String publicId, String systemId)
      throws java.lang.Exception;

    public void parse (String publicId, String systemId,
                       InputStream inputStream)
      throws java.lang.Exception;


Any further thoughts on this issue?

All the best,


David Megginson                 ak117 at
Microstar Software Ltd.         dmeggins at

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev at
Archived as:
To (un)subscribe, mailto:majordomo at the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo at the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa at

More information about the Xml-dev mailing list