Xalan-C++ API Documentation

The Xalan C++ XSLT Processor Version 1.10

XNull.hpp
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1 /*
2  * Copyright 1999-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #if !defined(XNULL_HEADER_GUARD_1357924680)
17 #define XNULL_HEADER_GUARD_1357924680
18 
19 
20 
21 // Base header file. Must be first.
23 
24 
25 
26 // Base class header file.
27 #include <xalanc/XPath/XObject.hpp>
28 
29 
30 
31 XALAN_CPP_NAMESPACE_BEGIN
32 
33 
34 
36 {
37 public:
38 
40 
44  static void
45  initialize();
46 
50  static void
51  terminate();
52 
57  explicit
58  XNull();
59 
66  XNull(const XNull& source);
67 
68  virtual
69  ~XNull();
70 
71  // These methods are inherited from XObject ...
72 
73  virtual const XalanDOMString&
74  getTypeString() const;
75 
76  virtual double
77  num() const;
78 
79  virtual bool
80  boolean() const;
81 
82  virtual const XalanDOMString&
83  str() const;
84 
85  virtual void
86  str(
87  FormatterListener& formatterListener,
88  MemberFunctionPtr function) const;
89 
90 #if !defined(XALAN_NO_USING_DECLARATION)
91  using ParentType::str;
92 #endif
93 
94  virtual double
95  stringLength() const;
96 
97  virtual void
99 
100  virtual void
101  ProcessXObjectTypeCallback(XObjectTypeCallback& theCallbackObject) const;
102 
103 private:
104 
105  static XalanDOMString s_nullString;
106 
107  // not implemented
108  XNull& operator=(const XNull &);
109 };
110 
111 
112 
113 XALAN_CPP_NAMESPACE_END
114 
115 
116 
117 #endif // XNULL_HEADER_GUARD_1357924680

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