341 lines
12 KiB
C++
341 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef _CONNECTIVITY_DBASE_INDEXNODE_HXX_
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#define _CONNECTIVITY_DBASE_INDEXNODE_HXX_
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#include "file/fcode.hxx"
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#include "file/FTable.hxx"
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#include "dbase/DIndexPage.hxx"
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#include "connectivity/FValue.hxx"
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#include <tools/ref.hxx>
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#define NODE_NOTFOUND 0xFFFF
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#define PAGE_SIZE 512
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namespace connectivity
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{
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namespace dbase
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{
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class ONDXNode;
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class ODbaseIndex;
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//==================================================================
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// Index Key
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//==================================================================
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typedef file::OOperand ONDXKey_BASE;
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class ONDXKey : public ONDXKey_BASE
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{
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friend class ONDXNode;
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sal_uInt32 nRecord; /* Record pointer */
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ORowSetValue xValue; /* Key values */
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public:
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ONDXKey(sal_uInt32 nRec=0);
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ONDXKey(const ORowSetValue& rVal, sal_Int32 eType, sal_uInt32 nRec);
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ONDXKey(const rtl::OUString& aStr, sal_uInt32 nRec = 0);
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ONDXKey(double aVal, sal_uInt32 nRec = 0);
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inline ONDXKey(const ONDXKey& rKey);
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inline ONDXKey& operator= (const ONDXKey& rKey);
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virtual void setValue(const ORowSetValue& _rVal);
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virtual const ORowSetValue& getValue() const;
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sal_uInt32 GetRecord() const { return nRecord; }
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void setRecord(sal_uInt32 _nRec) { nRecord = _nRec; }
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void ResetRecord() { nRecord = 0; }
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sal_Bool operator == (const ONDXKey& rKey) const;
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sal_Bool operator != (const ONDXKey& rKey) const;
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sal_Bool operator < (const ONDXKey& rKey) const;
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sal_Bool operator <= (const ONDXKey& rKey) const;
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sal_Bool operator > (const ONDXKey& rKey) const;
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sal_Bool operator >= (const ONDXKey& rKey) const;
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sal_Bool Load (SvFileStream& rStream, sal_Bool bText);
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sal_Bool Write(SvFileStream& rStream, sal_Bool bText);
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static sal_Bool IsText(sal_Int32 eType);
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private:
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StringCompare Compare(const ONDXKey& rKey) const;
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};
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//==================================================================
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// Index Page Pointer
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//==================================================================
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SV_DECL_REF(ONDXPage) // Base class - because we need to store additional information
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class ONDXPagePtr : public ONDXPageRef
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{
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friend SvStream& operator << (SvStream &rStream, const ONDXPagePtr&);
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friend SvStream& operator >> (SvStream &rStream, ONDXPagePtr&);
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sal_uInt32 nPagePos; // Position in the index file
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public:
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ONDXPagePtr(sal_uInt32 nPos = 0):nPagePos(nPos){}
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ONDXPagePtr(const ONDXPagePtr& rRef);
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ONDXPagePtr(ONDXPage* pRefPage);
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ONDXPagePtr& operator=(const ONDXPagePtr& rRef);
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ONDXPagePtr& operator=(ONDXPage* pPageRef);
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sal_uInt32 GetPagePos() const {return nPagePos;}
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sal_Bool HasPage() const {return nPagePos != 0;}
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// sal_Bool Is() const { return isValid(); }
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};
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//==================================================================
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// Index Page
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//==================================================================
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class ONDXPage : public SvRefBase
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{
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friend class ODbaseIndex;
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friend SvStream& operator << (SvStream &rStream, const ONDXPage&);
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friend SvStream& operator >> (SvStream &rStream, ONDXPage&);
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sal_uInt32 nPagePos; // Position in the index file
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sal_Bool bModified : 1;
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sal_uInt16 nCount;
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ONDXPagePtr aParent, // Parent page
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aChild; // Pointer to the right child page
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ODbaseIndex& rIndex;
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ONDXNode* ppNodes; // Array of nodes
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public:
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// Node operations
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sal_uInt16 Count() const {return nCount;}
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sal_Bool Insert(ONDXNode& rNode, sal_uInt32 nRowsLeft = 0);
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sal_Bool Insert(sal_uInt16 nIndex, ONDXNode& rNode);
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sal_Bool Append(ONDXNode& rNode);
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sal_Bool Delete(sal_uInt16);
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void Remove(sal_uInt16);
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void Release(sal_Bool bSave = sal_True);
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void ReleaseFull(sal_Bool bSave = sal_True);
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// Split and merge
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ONDXNode Split(ONDXPage& rPage);
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void Merge(sal_uInt16 nParentNodePos, ONDXPagePtr xPage);
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// Access operators
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ONDXNode& operator[] (sal_uInt16 nPos);
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const ONDXNode& operator[] (sal_uInt16 nPos) const;
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sal_Bool IsRoot() const;
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sal_Bool IsLeaf() const;
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sal_Bool IsModified() const;
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sal_Bool HasParent();
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sal_Bool HasChild() const;
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sal_Bool IsFull() const;
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sal_uInt32 GetPagePos() const {return nPagePos;}
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ONDXPagePtr& GetChild(ODbaseIndex* pIndex = 0);
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// Parent does not need to be reloaded
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ONDXPagePtr GetParent();
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ODbaseIndex& GetIndex() {return rIndex;}
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const ODbaseIndex& GetIndex() const {return rIndex;}
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// Setting the child, via reference to retain the PagePos
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void SetChild(ONDXPagePtr aCh);
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void SetParent(ONDXPagePtr aPa);
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sal_uInt16 Search(const ONDXKey& rSearch);
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sal_uInt16 Search(const ONDXPage* pPage);
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void SearchAndReplace(const ONDXKey& rSearch, ONDXKey& rReplace);
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protected:
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ONDXPage(ODbaseIndex& rIndex, sal_uInt32 nPos, ONDXPage* = NULL);
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~ONDXPage();
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virtual void QueryDelete();
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void SetModified(sal_Bool bMod) {bModified = bMod;}
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void SetPagePos(sal_uInt32 nPage) {nPagePos = nPage;}
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sal_Bool Find(const ONDXKey&); // Descend recursively
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sal_uInt16 FindPos(const ONDXKey& rKey) const;
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#if OSL_DEBUG_LEVEL > 1
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void PrintPage();
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#endif
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};
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SV_IMPL_REF(ONDXPage);
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SvStream& operator << (SvStream &rStream, const ONDXPagePtr&);
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SvStream& operator >> (SvStream &rStream, ONDXPagePtr&);
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inline sal_Bool ONDXPage::IsRoot() const {return !aParent.Is();}
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inline sal_Bool ONDXPage::IsLeaf() const {return !aChild.HasPage();}
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inline sal_Bool ONDXPage::IsModified() const {return bModified;}
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inline sal_Bool ONDXPage::HasParent() {return aParent.Is();}
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inline sal_Bool ONDXPage::HasChild() const {return aChild.HasPage();}
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inline ONDXPagePtr ONDXPage::GetParent() {return aParent;}
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inline void ONDXPage::SetParent(ONDXPagePtr aPa = ONDXPagePtr())
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{
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aParent = aPa;
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}
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inline void ONDXPage::SetChild(ONDXPagePtr aCh = ONDXPagePtr())
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{
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aChild = aCh;
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if (aChild.Is())
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aChild->SetParent(this);
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}
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SvStream& operator >> (SvStream &rStream, ONDXPage& rPage);
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SvStream& operator << (SvStream &rStream, const ONDXPage& rPage);
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typedef ::std::vector<ONDXPage*> ONDXPageList;
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//==================================================================
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// Index Node
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//==================================================================
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class ONDXNode
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{
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friend class ONDXPage;
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ONDXPagePtr aChild; /* Next page reference */
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ONDXKey aKey;
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public:
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ONDXNode(){}
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ONDXNode(const ONDXKey& rKey,
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ONDXPagePtr aPagePtr = ONDXPagePtr())
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:aChild(aPagePtr),aKey(rKey) {}
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// Does the node point to a page?
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sal_Bool HasChild() const {return aChild.HasPage();}
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// If an index is provided, we may be able to retrieve the page
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ONDXPagePtr& GetChild(ODbaseIndex* pIndex = NULL, ONDXPage* = NULL);
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const ONDXKey& GetKey() const { return aKey;}
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ONDXKey& GetKey() { return aKey;}
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// Setting the child, via reference to retain the PagePos
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void SetChild(ONDXPagePtr aCh = ONDXPagePtr(), ONDXPage* = NULL);
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void SetKey(ONDXKey& rKey) {aKey = rKey;}
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void Write(SvStream &rStream, const ONDXPage& rPage) const;
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void Read(SvStream &rStream, ODbaseIndex&);
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};
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//==================================================================
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// inline implementation
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//==================================================================
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// inline ONDXKey::ONDXKey(const ORowSetValue& rVal, sal_Int32 eType, sal_uInt32 nRec)
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// : ONDXKey_BASE(eType)
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// , nRecord(nRec),xValue(rVal)
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// {
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// }
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// inline ONDXKey::ONDXKey(const rtl::OUString& aStr, sal_uInt32 nRec)
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// : ONDXKey_BASE(::com::sun::star::sdbc::DataType::VARCHAR)
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// ,nRecord(nRec)
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// {
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// if (aStr.len())
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// xValue = aStr;
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// }
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// inline ONDXKey::ONDXKey(double aVal, sal_uInt32 nRec)
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// : ONDXKey_BASE(::com::sun::star::sdbc::DataType::DOUBLE)
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// ,nRecord(nRec)
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// ,xValue(aVal)
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// {
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// }
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// inline ONDXKey::ONDXKey(sal_uInt32 nRec)
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// :nRecord(nRec)
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// {
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// }
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inline ONDXKey::ONDXKey(const ONDXKey& rKey)
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: ONDXKey_BASE(rKey.getDBType())
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,nRecord(rKey.nRecord)
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,xValue(rKey.xValue)
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{
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}
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inline ONDXKey& ONDXKey::operator=(const ONDXKey& rKey)
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{
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if(&rKey == this)
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return *this;
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xValue = rKey.xValue;
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nRecord = rKey.nRecord;
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m_eDBType = rKey.getDBType();
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return *this;
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}
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inline sal_Bool ONDXKey::operator == (const ONDXKey& rKey) const
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{
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if(&rKey == this)
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return sal_True;
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return Compare(rKey) == COMPARE_EQUAL;
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}
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inline sal_Bool ONDXKey::operator != (const ONDXKey& rKey) const
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{
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return !operator== (rKey);
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}
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inline sal_Bool ONDXKey::operator < (const ONDXKey& rKey) const
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{
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return Compare(rKey) == COMPARE_LESS;
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}
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inline sal_Bool ONDXKey::operator > (const ONDXKey& rKey) const
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{
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return Compare(rKey) == COMPARE_GREATER;
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}
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inline sal_Bool ONDXKey::operator <= (const ONDXKey& rKey) const
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{
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return !operator > (rKey);
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}
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inline sal_Bool ONDXKey::operator >= (const ONDXKey& rKey) const
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{
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return !operator< (rKey);
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}
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inline void ONDXNode::SetChild(ONDXPagePtr aCh, ONDXPage* pParent)
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{
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aChild = aCh;
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if (aChild.Is())
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aChild->SetParent(pParent);
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}
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}
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}
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#endif // _CONNECTIVITY_DBASE_INDEXNODE_HXX_
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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