connectivity/source/inc/dbase/DIndexIter.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
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   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
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  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEXITER_HXX
  21 #define INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEXITER_HXX
  22
  23 #include "file/fcode.hxx"
  24 #include "dbase/DIndex.hxx"
  25 #include "dbase/dindexnode.hxx"
  26
  27 namespace connectivity
  28 {
  29     namespace dbase
  30     {
  31
  32         // IndexIterator
  33
  34         class OIndexIterator
  35         {
  36         protected:
  37             file::OBoolOperator*    m_pOperator;
  38             const file::OOperand*   m_pOperand;
  39             ODbaseIndex*            m_pIndex;
  40             ONDXPagePtr             m_aRoot,
  41                                     m_aCurLeaf;
  42             sal_uInt16                  m_nCurNode;
  43
  44         protected:
  45             sal_uIntPtr Find(bool bFirst);
  46             sal_uIntPtr GetCompare(bool bFirst);
  47             sal_uIntPtr GetLike(bool bFirst);
  48             sal_uIntPtr GetNull(bool bFirst);
  49             sal_uIntPtr GetNotNull(bool bFirst);
  50
  51             ONDXKey* GetFirstKey(ONDXPage* pPage,
  52                                 const file::OOperand& rKey);
  53             ONDXKey* GetNextKey();
  54             ODbaseIndex* GetIndex() const {return m_pIndex;}
  55
  56
  57         public:
  58             OIndexIterator(ODbaseIndex* pInd,
  59                             file::OBoolOperator* pOp,
  60                             const file::OOperand* pOper)
  61                 :m_pOperator(pOp)
  62                 ,m_pOperand(pOper)
  63                 ,m_pIndex(pInd)
  64                 ,m_nCurNode(NODE_NOTFOUND)
  65             {
  66                 pInd->acquire();
  67             }
  68
  69             virtual ~OIndexIterator();
  70             sal_uIntPtr First();
  71             sal_uIntPtr Next();
  72
  73         };
  74     }
  75 }
  76 #endif // INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEXITER_HXX
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */