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Item.hpp
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1 /*
2  * Copyright (c) 2001-2008
3  * DecisionSoft Limited. All rights reserved.
4  * Copyright (c) 2004-2008
5  * Oracle. All rights reserved.
6  *
7  * Licensed under the Apache License, Version 2.0 (the "License");
8  * you may not use this file except in compliance with the License.
9  * You may obtain a copy of the License at
10  *
11  * http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing, software
14  * distributed under the License is distributed on an "AS IS" BASIS,
15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  * See the License for the specific language governing permissions and
17  * limitations under the License.
18  *
19  * $Id$
20  */
21 
22 #ifndef _ITEM_HPP
23 #define _ITEM_HPP
24 
25 #include <xqilla/framework/XQillaExport.hpp>
27 #include <xercesc/util/XercesDefs.hpp>
28 
29 XERCES_CPP_NAMESPACE_BEGIN
30 class XMLBuffer;
31 XERCES_CPP_NAMESPACE_END
32 
33 // forward declare when we can
35 class DynamicContext;
36 class EventHandler;
37 
38 class XQILLA_API Item : public ReferenceCounted
39 {
40 public:
42 
44  static const XMLCh gXQilla[];
45 
46  virtual bool isNode() const = 0;
47 
48  virtual bool isAtomicValue() const = 0;
49 
50  virtual bool isFunction() const = 0;
51 
52  virtual const XMLCh* asString(const DynamicContext* context) const = 0;
53 
54  virtual const XMLCh* getTypeURI() const = 0;
55 
56  virtual const XMLCh* getTypeName() const = 0;
57 
59  virtual void generateEvents(EventHandler *events, const DynamicContext *context,
60  bool preserveNS = true, bool preserveType = true) const = 0;
61 
63  virtual void *getInterface(const XMLCh *name) const = 0;
64 
66  virtual void typeToBuffer(DynamicContext *context, XERCES_CPP_NAMESPACE_QUALIFIER XMLBuffer &buffer) const = 0;
67 
68 protected:
69  Item() {}
70 
71 private:
72  // copy constructor
73  Item (const Item & other);
74  // assignment operation
75  Item & operator=(const Item & item) ;
76 };
77 
78 #endif
79