/*Copyright (c) 2004-2005, Dennis M. SosnoskiAll rights reserved.Redistribution and use in source and binary forms, with or without modification,are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this   list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice,   this list of conditions and the following disclaimer in the documentation   and/or other materials provided with the distribution. * Neither the name of JiBX nor the names of its contributors may be used   to endorse or promote products derived from this software without specific   prior written permission.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" ANDANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIEDWARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AREDISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FORANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ONANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THISSOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.*/package org.jibx.extras;import org.jibx.runtime.IMarshaller;import org.jibx.runtime.IMarshallingContext;import org.jibx.runtime.IUnmarshaller;import org.jibx.runtime.IUnmarshallingContext;import org.jibx.runtime.JiBXException;import org.jibx.runtime.impl.UnmarshallingContext;/** * <p>Custom marshaller/unmarshaller for arbitrary ignored element. This ignores * an element when unmarshalling, if one is present, and does nothing when * marshalling.</p> *  * @author Dennis M. Sosnoski * @version 1.0 */public class DiscardElementMapper implements IMarshaller, IUnmarshaller{    /* (non-Javadoc)     * @see org.jibx.runtime.IMarshaller#isExtension(int)     */        public boolean isExtension(int index) {        return false;    }    /* (non-Javadoc)     * @see org.jibx.runtime.IMarshaller#marshal(java.lang.Object,     *  org.jibx.runtime.IMarshallingContext)     */        public void marshal(Object obj, IMarshallingContext ictx) {}    /* (non-Javadoc)     * @see org.jibx.runtime.IUnmarshaller#isPresent(org.jibx.runtime.IUnmarshallingContext)     */         public boolean isPresent(IUnmarshallingContext ctx) throws JiBXException {        return !ctx.isEnd();    }    /* (non-Javadoc)     * @see org.jibx.runtime.IUnmarshaller#unmarshal(java.lang.Object,     *  org.jibx.runtime.IUnmarshallingContext)     */         public Object unmarshal(Object obj, IUnmarshallingContext ictx)        throws JiBXException {                // just discard and return null        ((UnmarshallingContext)ictx).skipElement();        return null;    }}