org.xml.sax
Interface XMLFilter

All Superinterfaces:

XMLReader

All Known Implementing Classes:

XMLFilterImpl

public interface XMLFilter

extends XMLReader

Interface for an XML filter.

An XML filter is like an XML reader, except that it obtains its events from another XML reader rather than a primary source like an XML document or database. Filters can modify a stream of events as they pass on to the final application.

The XMLFilterImpl helper class provides a convenient base for creating SAX2 filters, by passing on all EntityResolver, DTDHandler, ContentHandler and ErrorHandler events automatically.

Since:

SAX 2.0

Version:

2.0

Author:

David Megginson, sax@megginson.com

See Also:

XMLFilterImpl

Method Summary

XMLReader	getParent() Get the parent reader.
void	setParent(XMLReader parent) Set the parent reader.

Methods inherited from interface org.xml.sax.XMLReader

getContentHandler, getDTDHandler, getEntityResolver, getErrorHandler, getFeature, getProperty, parse, parse, setContentHandler, setDTDHandler, setEntityResolver, setErrorHandler, setFeature, setProperty

Method Detail

setParent

public void setParent(XMLReader parent)

Set the parent reader.

This method allows the application to link the filter to a parent reader (which may be another filter). The argument may not be null.

Parameters:

parent - The parent reader.

getParent

public XMLReader getParent()

Get the parent reader.

This method allows the application to query the parent reader (which may be another filter). It is generally a bad idea to perform any operations on the parent reader directly: they should all pass through this filter.

Returns:

The parent filter, or null if none has been set.