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 javax.xml.namespace.QName;
  29 
  30 import com.sun.xml.internal.bind.v2.model.core.NonElement;
  31 import com.sun.xml.internal.bind.v2.model.core.PropertyInfo;
  32 import com.sun.xml.internal.bind.v2.model.core.TypeRef;
  33 
  34 /**
  35  * @author Kohsuke Kawaguchi
  36  */
  37 class TypeRefImpl<TypeT,ClassDeclT> implements TypeRef<TypeT,ClassDeclT> {
  38     private final QName elementName;
  39     private final TypeT type;
  40     protected final ElementPropertyInfoImpl<TypeT,ClassDeclT,?,?> owner;
  41     private NonElement<TypeT,ClassDeclT> ref;
  42     private final boolean isNillable;
  43     private String defaultValue;
  44 
  45     public TypeRefImpl(ElementPropertyInfoImpl<TypeT, ClassDeclT, ?, ?> owner, QName elementName, TypeT type, boolean isNillable, String defaultValue) {
  46         this.owner = owner;
  47         this.elementName = elementName;
  48         this.type = type;
  49         this.isNillable = isNillable;
  50         this.defaultValue = defaultValue;
  51         assert owner!=null;
  52         assert elementName!=null;
  53         assert type!=null;
  54     }
  55 
  56     public NonElement<TypeT,ClassDeclT> getTarget() {
  57         if(ref==null)
  58             calcRef();
  59         return ref;
  60     }
  61 
  62     public QName getTagName() {
  63         return elementName;
  64     }
  65 
  66     public boolean isNillable() {
  67         return isNillable;
  68     }
  69 
  70     public String getDefaultValue() {
  71         return defaultValue;
  72     }
  73 
  74     protected void link() {
  75         // if we have'nt computed the ref yet, do so now.
  76         calcRef();
  77     }
  78 
  79     private void calcRef() {
  80         // we can't do this eagerly because of a cyclic dependency
  81         ref = owner.parent.builder.getTypeInfo(type,owner);
  82         assert ref!=null;
  83     }
  84 
  85     public PropertyInfo<TypeT,ClassDeclT> getSource() {
  86         return owner;
  87     }
  88 }