| /* |
| * Copyright 2005-2006 Sun Microsystems, Inc. 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. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| package com.sun.xml.internal.bind.v2.runtime.unmarshaller; |
| |
| import com.sun.xml.internal.bind.DatatypeConverterImpl; |
| import com.sun.xml.internal.bind.api.AccessorException; |
| import com.sun.xml.internal.bind.v2.WellKnownNamespace; |
| import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor; |
| |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Looks for xsi:nil='true' and sets the target to null. |
| * Otherwise delegate to another handler. |
| * |
| * @author Kohsuke Kawaguchi |
| */ |
| public class XsiNilLoader extends ProxyLoader { |
| |
| private final Loader defaultLoader; |
| |
| public XsiNilLoader(Loader defaultLoader) { |
| this.defaultLoader = defaultLoader; |
| assert defaultLoader!=null; |
| } |
| |
| protected Loader selectLoader(UnmarshallingContext.State state, TagName ea) throws SAXException { |
| int idx = ea.atts.getIndex(WellKnownNamespace.XML_SCHEMA_INSTANCE,"nil"); |
| |
| if(idx!=-1) { |
| String value = ea.atts.getValue(idx); |
| if(DatatypeConverterImpl._parseBoolean(value)) { |
| onNil(state); |
| return Discarder.INSTANCE; |
| } |
| } |
| |
| return defaultLoader; |
| } |
| |
| /** |
| * Called when xsi:nil='true' was found. |
| */ |
| protected void onNil(UnmarshallingContext.State state) throws SAXException { |
| } |
| |
| |
| |
| public static final class Single extends XsiNilLoader { |
| private final Accessor acc; |
| public Single(Loader l, Accessor acc) { |
| super(l); |
| this.acc = acc; |
| } |
| |
| protected void onNil(UnmarshallingContext.State state) throws SAXException { |
| try { |
| acc.set(state.prev.target,null); |
| } catch (AccessorException e) { |
| handleGenericException(e,true); |
| } |
| } |
| } |
| |
| public static final class Array extends XsiNilLoader { |
| public Array(Loader core) { |
| super(core); |
| } |
| |
| protected void onNil(UnmarshallingContext.State state) { |
| // let the receiver add this to the lister |
| state.target = null; |
| } |
| } |
| } |