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.model.impl;
  27 
  28 import java.util.Collections;
  29 import java.util.List;
  30 
  31 import javax.xml.bind.annotation.XmlList;
  32 
  33 import com.sun.xml.internal.bind.v2.model.core.ID;
  34 import com.sun.xml.internal.bind.v2.model.core.NonElement;
  35 import com.sun.xml.internal.bind.v2.model.core.PropertyInfo;
  36 import com.sun.xml.internal.bind.v2.model.runtime.RuntimeNonElementRef;
  37 import com.sun.xml.internal.bind.v2.model.runtime.RuntimePropertyInfo;
  38 import com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationException;
  39 import com.sun.xml.internal.bind.v2.runtime.Transducer;
  40 import com.sun.xml.internal.bind.v2.runtime.reflect.Accessor;
  41 
  42 /**
  43  * {@link PropertyInfoImpl} that can only have one type.
  44  *
  45  * Specifically, {@link AttributePropertyInfoImpl} and {@link ValuePropertyInfoImpl}.
  46  *
  47  * @author Kohsuke Kawaguchi
  48  */
  49 abstract class SingleTypePropertyInfoImpl<T,C,F,M>
  50     extends PropertyInfoImpl<T,C,F,M> {
  51 
  52     /**
  53      * Computed lazily.
  54      *
  55      * @see {@link #getTarget()}.
  56      */
  57     private NonElement<T,C> type;
  58 
  59     public SingleTypePropertyInfoImpl(ClassInfoImpl<T,C,F,M> classInfo, PropertySeed<T,C,F,M> seed) {
  60         super(classInfo, seed);
  61         if(this instanceof RuntimePropertyInfo) {
  62             Accessor rawAcc = ((RuntimeClassInfoImpl.RuntimePropertySeed)seed).getAccessor();
  63             if(getAdapter()!=null && !isCollection())
  64                 // adapter for a single-value property is handled by accessor.
  65                 // adapter for a collection property is handled by lister.
  66                 rawAcc = rawAcc.adapt(((RuntimePropertyInfo)this).getAdapter());
  67             this.acc = rawAcc;
  68         } else
  69             this.acc = null;
  70     }
  71 
  72     public List<? extends NonElement<T,C>> ref() {
  73         return Collections.singletonList(getTarget());
  74     }
  75 
  76     public NonElement<T,C> getTarget() {
  77         if(type==null) {
  78             assert parent.builder!=null : "this method must be called during the build stage";
  79             type = parent.builder.getTypeInfo(getIndividualType(),this);
  80         }
  81         return type;
  82     }
  83 
  84     public PropertyInfo<T,C> getSource() {
  85         return this;
  86     }
  87 
  88     public void link() {
  89         super.link();
  90 
  91         if (!(NonElement.ANYTYPE_NAME.equals(type.getTypeName()) || type.isSimpleType() || id()==ID.IDREF)) {
  92                 parent.builder.reportError(new IllegalAnnotationException(
  93                 Messages.SIMPLE_TYPE_IS_REQUIRED.format(),
  94                 seed
  95             ));
  96         }
  97 
  98         if(!isCollection() && seed.hasAnnotation(XmlList.class)) {
  99             parent.builder.reportError(new IllegalAnnotationException(
 100                 Messages.XMLLIST_ON_SINGLE_PROPERTY.format(), this
 101             ));
 102         }
 103     }
 104 
 105 //
 106 //
 107 // technically these code belong to runtime implementation, but moving the code up here
 108 // allows this to be shared between RuntimeValuePropertyInfoImpl and RuntimeAttributePropertyInfoImpl
 109 //
 110 //
 111 
 112     private final Accessor acc;
 113     /**
 114      * Lazily created.
 115      */
 116     private Transducer xducer;
 117 
 118     public Accessor getAccessor() {
 119         return acc;
 120     }
 121 
 122 
 123     public Transducer getTransducer() {
 124         if(xducer==null) {
 125             xducer = RuntimeModelBuilder.createTransducer((RuntimeNonElementRef)this);
 126             if(xducer==null) {
 127                 // this situation is checked by by the link method.
 128                 // avoid repeating the same error by silently recovering
 129                 xducer = RuntimeBuiltinLeafInfoImpl.STRING;
 130             }
 131         }
 132         return xducer;
 133     }
 134 }