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/* * Copyright (c) 2000, 2005, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ // XMLFilter.java - filter SAX2 events. // http://www.saxproject.org // Written by David Megginson // NO WARRANTY! This class is in the Public Domain. // $Id: XMLFilter.java,v 1.2 2004/11/03 22:55:32 jsuttor Exp $ package org.xml.sax; /** * Interface for an XML filter. * * <blockquote> * <em>This module, both source code and documentation, is in the * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em> * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a> * for further information. * </blockquote> * * <p>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.</p> * * <p>The XMLFilterImpl helper class provides a convenient base * for creating SAX2 filters, by passing on all {@link org.xml.sax.EntityResolver * EntityResolver}, {@link org.xml.sax.DTDHandler DTDHandler}, * {@link org.xml.sax.ContentHandler ContentHandler} and {@link org.xml.sax.ErrorHandler * ErrorHandler} events automatically.</p> * * @since 1.4, SAX 2.0 * @author David Megginson * @see org.xml.sax.helpers.XMLFilterImpl */ public interface XMLFilter extends XMLReader { /** * Set the parent reader. * * <p>This method allows the application to link the filter to * a parent reader (which may be another filter). The argument * may not be null.</p> * * @param parent The parent reader. */ public abstract void setParent(XMLReader parent); /** * Get the parent reader. * * <p>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.</p> * * @return The parent filter, or null if none has been set. */ public abstract XMLReader getParent(); } // end of XMLFilter.java