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.reflect;
  27 
  28 import javax.xml.bind.annotation.adapters.XmlAdapter;
  29 
  30 import com.sun.xml.internal.bind.api.AccessorException;
  31 import com.sun.xml.internal.bind.v2.ClassFactory;
  32 import com.sun.xml.internal.bind.v2.model.core.Adapter;
  33 import com.sun.xml.internal.bind.v2.runtime.Coordinator;
  34 
  35 /**
  36  * {@link Accessor} that adapts the value by using {@link Adapter}.
  37  *
  38  * @see Accessor#adapt
  39  * @author Kohsuke Kawaguchi
  40  */
  41 final class AdaptedAccessor<BeanT,InMemValueT,OnWireValueT> extends Accessor<BeanT,OnWireValueT> {
  42     private final Accessor<BeanT,InMemValueT> core;
  43     private final Class<? extends XmlAdapter<OnWireValueT,InMemValueT>> adapter;
  44 
  45     /*pacakge*/ AdaptedAccessor(Class<OnWireValueT> targetType, Accessor<BeanT, InMemValueT> extThis, Class<? extends XmlAdapter<OnWireValueT, InMemValueT>> adapter) {
  46         super(targetType);
  47         this.core = extThis;
  48         this.adapter = adapter;
  49     }
  50 
  51     @Override
  52     public boolean isAdapted() {
  53         return true;
  54     }
  55 
  56     public OnWireValueT get(BeanT bean) throws AccessorException {
  57         InMemValueT v = core.get(bean);
  58 
  59         XmlAdapter<OnWireValueT,InMemValueT> a = getAdapter();
  60         try {
  61             return a.marshal(v);
  62         } catch (Exception e) {
  63             throw new AccessorException(e);
  64         }
  65     }
  66 
  67     public void set(BeanT bean, OnWireValueT o) throws AccessorException {
  68         XmlAdapter<OnWireValueT, InMemValueT> a = getAdapter();
  69         try {
  70             core.set(bean, (o == null ? null : a.unmarshal(o)));
  71         } catch (Exception e) {
  72             throw new AccessorException(e);
  73         }
  74     }
  75 
  76     public Object getUnadapted(BeanT bean) throws AccessorException {
  77         return core.getUnadapted(bean);
  78     }
  79 
  80     public void setUnadapted(BeanT bean, Object value) throws AccessorException {
  81         core.setUnadapted(bean,value);
  82     }
  83 
  84     /**
  85      * Sometimes Adapters are used directly by JAX-WS outside any
  86      * {@link Coordinator}. Use this lazily-created cached
  87      * {@link XmlAdapter} in such cases.
  88      */
  89     private XmlAdapter<OnWireValueT, InMemValueT> staticAdapter;
  90 
  91     private XmlAdapter<OnWireValueT, InMemValueT> getAdapter() {
  92         Coordinator coordinator = Coordinator._getInstance();
  93         if(coordinator!=null)
  94             return coordinator.getAdapter(adapter);
  95         else {
  96             synchronized(this) {
  97                 if(staticAdapter==null)
  98                     staticAdapter = ClassFactory.create(adapter);
  99             }
 100             return staticAdapter;
 101         }
 102     }
 103 }