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ResultImpl.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 _RESULTIMPL_HPP
23 #define _RESULTIMPL_HPP
24 
25 #include <xqilla/framework/XQillaExport.hpp>
26 #include <xqilla/items/Item.hpp>
28 
29 class DynamicContext;
30 class Sequence;
31 class Result;
32 class ResultBufferImpl;
33 
35 class XQILLA_API ResultImpl : public LocationInfo
36 {
37 public:
38  virtual ~ResultImpl() {}
39 
40  Result *getResultPointer() { return resultPointer_; }
41  void setResultPointer(Result *p) { resultPointer_ = p; }
42 
44  virtual Item::Ptr next(DynamicContext *context);
45 
47  virtual Item::Ptr nextOrTail(Result &tail, DynamicContext *context);
48 
50  virtual Sequence toSequence(DynamicContext *context);
51 
53  virtual ResultBufferImpl *toResultBuffer(unsigned int readCount);
54 
55 protected:
56  ResultImpl(const LocationInfo *o);
57 
59 
60 private:
61  ResultImpl(const ResultImpl &) {};
62  ResultImpl &operator=(const ResultImpl &) { return *this; };
63 };
64 
65 #endif