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1   /*
2    * Copyright (c) 1997, 2011, 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.tools.internal.xjc.model;
27  
28  import javax.xml.namespace.QName;
29  
30  import com.sun.tools.internal.xjc.model.nav.NClass;
31  import com.sun.tools.internal.xjc.model.nav.NType;
32  import com.sun.xml.internal.bind.v2.model.core.AttributePropertyInfo;
33  import com.sun.xml.internal.bind.v2.model.core.PropertyKind;
34  import com.sun.xml.internal.xsom.XSComponent;
35  import com.sun.istack.internal.Nullable;
36  
37  import org.xml.sax.Locator;
38  
39  /**
40   * {@link AttributePropertyInfo} for the compiler.
41   *
42   * @author Kohsuke Kawaguchi
43   */
44  public final class CAttributePropertyInfo extends CSingleTypePropertyInfo implements AttributePropertyInfo<NType,NClass> {
45  
46      private final QName attName;
47      private final boolean isRequired;
48  
49      /**
50       * @param type
51       *      Represents the bound type of this attribute.
52       * @param typeName
53       *      XML Schema type name of this attribute. Optional for other schema languages.
54       */
55      public CAttributePropertyInfo(String name, XSComponent source, CCustomizations customizations,
56                                    Locator locator, QName attName, TypeUse type, @Nullable QName typeName,
57                                    boolean required ) {
58          super(name, type, typeName, source, customizations, locator);
59          isRequired = required;
60          this.attName = attName;
61      }
62  
63      public boolean isRequired() {
64          return isRequired;
65      }
66  
67      public QName getXmlName() {
68          return attName;
69      }
70  
71      /**
72       * An optional attribute can never be unboxable,
73       * for we need null to represent the absence.
74       */
75      public boolean isUnboxable() {
76          if(!isRequired) return false;
77          return super.isUnboxable();
78      }
79  
80      @Override
81      public boolean isOptionalPrimitive() {
82          return !isRequired && super.isUnboxable();
83      }
84  
85      public <V> V accept(CPropertyVisitor<V> visitor) {
86          return visitor.onAttribute(this);
87      }
88  
89      public final PropertyKind kind() {
90          return  PropertyKind.ATTRIBUTE;
91      }
92  }