Java tutorial
/* * Copyright (c) 2009, 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. */ package javax.xml.stream.util; import javax.xml.stream.XMLEventReader; import javax.xml.stream.events.XMLEvent; import javax.xml.stream.XMLStreamException; /** * This is the base class for deriving an XMLEventReader * filter. * * This class is designed to sit between an XMLEventReader and an * application's XMLEventReader. By default each method * does nothing but call the corresponding method on the * parent interface. * * @version 1.0 * @author Copyright (c) 2009 by Oracle Corporation. All Rights Reserved. * @see javax.xml.stream.XMLEventReader * @see StreamReaderDelegate * @since 1.6 */ public class EventReaderDelegate implements XMLEventReader { private XMLEventReader reader; /** * Construct an empty filter with no parent. */ public EventReaderDelegate() { } /** * Construct an filter with the specified parent. * @param reader the parent */ public EventReaderDelegate(XMLEventReader reader) { this.reader = reader; } /** * Set the parent of this instance. * @param reader the new parent */ public void setParent(XMLEventReader reader) { this.reader = reader; } /** * Get the parent of this instance. * @return the parent or null if none is set */ public XMLEventReader getParent() { return reader; } public XMLEvent nextEvent() throws XMLStreamException { return reader.nextEvent(); } public Object next() { return reader.next(); } public boolean hasNext() { return reader.hasNext(); } public XMLEvent peek() throws XMLStreamException { return reader.peek(); } public void close() throws XMLStreamException { reader.close(); } public String getElementText() throws XMLStreamException { return reader.getElementText(); } public XMLEvent nextTag() throws XMLStreamException { return reader.nextTag(); } public Object getProperty(java.lang.String name) throws java.lang.IllegalArgumentException { return reader.getProperty(name); } public void remove() { reader.remove(); } }