1 /*
   2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.xml.internal.bind.v2.runtime.property;
  27 
  28 
  29 import java.io.IOException;
  30 
  31 import javax.xml.bind.annotation.XmlValue;
  32 import javax.xml.stream.XMLStreamException;
  33 
  34 import com.sun.xml.internal.bind.api.AccessorException;
  35 import com.sun.xml.internal.bind.v2.model.core.PropertyKind;
  36 import com.sun.xml.internal.bind.v2.model.runtime.RuntimeValuePropertyInfo;
  37 import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl;
  38 import com.sun.xml.internal.bind.v2.runtime.XMLSerializer;
  39 import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor;
  40 import com.sun.xml.internal.bind.v2.runtime.reflect.TransducedAccessor;
  41 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.ChildLoader;
  42 import com.sun.xml.internal.bind.v2.runtime.unmarshaller.ValuePropertyLoader;
  43 import com.sun.xml.internal.bind.v2.util.QNameMap;
  44 
  45 import org.xml.sax.SAXException;
  46 
  47 /**
  48  * {@link Property} implementation for {@link XmlValue} properties.
  49  *
  50  * <p>
  51  * This one works for both leaves and nodes, scalars and arrays.
  52  *
  53  * @author Bhakti Mehta (bhakti.mehta@sun.com)
  54  */
  55 public final class ValueProperty<BeanT> extends PropertyImpl<BeanT> {
  56 
  57     /**
  58      * Heart of the conversion logic.
  59      */
  60     private final TransducedAccessor<BeanT> xacc;
  61     private final Accessor<BeanT,?> acc;
  62 
  63 
  64     public ValueProperty(JAXBContextImpl context, RuntimeValuePropertyInfo prop) {
  65         super(context,prop);
  66         xacc = TransducedAccessor.get(context,prop);
  67         acc = prop.getAccessor();   // we only use this for binder, so don't waste memory by optimizing
  68     }
  69 
  70     public final void serializeBody(BeanT o, XMLSerializer w, Object outerPeer) throws SAXException, AccessorException, IOException, XMLStreamException {
  71         if(xacc.hasValue(o))
  72             xacc.writeText(w,o,fieldName);
  73     }
  74 
  75     public void serializeURIs(BeanT o, XMLSerializer w) throws SAXException, AccessorException {
  76         xacc.declareNamespace(o,w);
  77     }
  78 
  79     public boolean hasSerializeURIAction() {
  80         return xacc.useNamespace();
  81     }
  82 
  83     public void buildChildElementUnmarshallers(UnmarshallerChain chainElem, QNameMap<ChildLoader> handlers) {
  84         handlers.put(StructureLoaderBuilder.TEXT_HANDLER,
  85                 new ChildLoader(new ValuePropertyLoader(xacc),null));
  86     }
  87 
  88     public PropertyKind getKind() {
  89         return PropertyKind.VALUE;
  90     }
  91 
  92     public void reset(BeanT o) throws AccessorException {
  93         acc.set(o,null);
  94     }
  95 
  96     public String getIdValue(BeanT bean) throws AccessorException, SAXException {
  97         return xacc.print(bean).toString();
  98     }
  99 
 100 }