SAX: multiple handlers

David Megginson (ak117@freenet.carleton.ca)
Tue, 24 Feb 1998 09:23:30 -0500

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;
import java.io.InputStream;

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

-- 
David Megginson                 ak117@freenet.carleton.ca
Microstar Software Ltd.         dmeggins@microstar.com
      http://home.sprynet.com/sprynet/dmeggins/


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