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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:51:28 +0000
commit940b4d1848e8c70ab7642901a68594e8016caffc (patch)
treeeb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /connectivity/source/inc/dbase/DIndex.hxx
parentInitial commit. (diff)
downloadlibreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.tar.xz
libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.zip
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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-rw-r--r--connectivity/source/inc/dbase/DIndex.hxx145
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEX_HXX
+#define INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEX_HXX
+
+#include <sdbcx/VIndex.hxx>
+#include <dbase/DTable.hxx>
+#include <dbase/dindexnode.hxx>
+
+#define dBASE_III_GROUP "dBase III"
+
+namespace connectivity
+{
+ namespace dbase
+ {
+ class OIndexIterator;
+ class ONDXKey;
+
+ typedef sdbcx::OIndex ODbaseIndex_BASE;
+
+ class ODbaseIndex : public ODbaseIndex_BASE
+ {
+ friend SvStream& WriteODbaseIndex(SvStream &rStream, ODbaseIndex&);
+ friend SvStream& operator >> (SvStream &rStream, ODbaseIndex&);
+
+ friend class ONDXNode;
+ friend class ONDXPage;
+ friend class ONDXPagePtr;
+ friend class OIndexIterator;
+
+ public:
+
+ // Header struct - stays in memory
+
+ struct NDXHeader
+ {
+ sal_uInt32 db_rootpage; /* Rootpage position */
+ sal_uInt32 db_pagecount; /* Page count */
+ sal_uInt8 db_free[4]; /* Reserved */
+ sal_uInt16 db_keylen; /* Key length */
+ sal_uInt16 db_maxkeys; /* Maximum number of keys per page */
+ sal_uInt16 db_keytype; /* Type of key:
+ 0 = Text
+ 1 = Numerical */
+ sal_uInt16 db_keyrec; /* Length of an index record
+ RecordNumber + keylen */
+ sal_uInt8 db_free1[3]; /* Reserved */
+ sal_uInt8 db_unique; /* Unique */
+ char db_name[488]; /* index_name (field name) */
+ };
+
+ private:
+ std::unique_ptr<SvStream> m_pFileStream; // Stream to read/write the index
+ NDXHeader m_aHeader = {};
+ std::vector<ONDXPage*>
+ m_aCollector; // Pool of obsolete pages
+ ONDXPagePtr m_aRoot, // Root of the B+ tree
+ m_aCurLeaf; // Current leaf
+ sal_uInt16 m_nCurNode; // Position of the current node
+
+ sal_uInt32 m_nPageCount,
+ m_nRootPage;
+
+ ODbaseTable* m_pTable;
+ bool m_bUseCollector : 1; // Use the Garbage Collector
+
+ OUString getCompletePath() const;
+ void closeImpl();
+ // Closes and kills the index file and throws an error
+ void impl_killFileAndthrowError_throw(const char* pErrorId, const OUString& _sFile);
+ protected:
+ virtual ~ODbaseIndex() override;
+ public:
+ ODbaseIndex(ODbaseTable* _pTable);
+ ODbaseIndex(ODbaseTable* _pTable,const NDXHeader& _aHeader,const OUString& Name);
+
+ void openIndexFile();
+ virtual void refreshColumns() override;
+
+ // css::lang::XUnoTunnel
+ virtual sal_Int64 SAL_CALL getSomething( const css::uno::Sequence< sal_Int8 >& aIdentifier ) override;
+ static css::uno::Sequence< sal_Int8 > getUnoTunnelId();
+
+ const ODbaseTable* getTable() const { return m_pTable; }
+ const NDXHeader& getHeader() const { return m_aHeader; }
+ std::unique_ptr<OIndexIterator> createIterator();
+
+ void SetRootPos(sal_uInt32 nPos) {m_nRootPage = nPos;}
+ void SetPageCount(sal_uInt32 nCount) {m_nPageCount = nCount;}
+
+ sal_uInt32 GetPageCount() const {return m_nPageCount;}
+
+ sal_uInt16 GetMaxNodes() const {return m_aHeader.db_maxkeys;}
+
+ bool Insert(sal_uInt32 nRec, const ORowSetValue& rValue);
+ bool Update(sal_uInt32 nRec, const ORowSetValue&, const ORowSetValue&);
+ bool Delete(sal_uInt32 nRec, const ORowSetValue& rValue);
+ bool Find(sal_uInt32 nRec, const ORowSetValue& rValue);
+
+ void createINFEntry();
+ void CreateImpl();
+ void DropImpl();
+
+ DECLARE_SERVICE_INFO();
+ protected:
+
+ ONDXPage* CreatePage(sal_uInt32 nPagePos, ONDXPage* pParent = nullptr, bool bLoad = false);
+ void Collect(ONDXPage*);
+ ONDXPagePtr const & getRoot();
+
+ bool isUnique() const { return m_IsUnique; }
+ bool UseCollector() const {return m_bUseCollector;}
+ // Tree operations
+ void Release(bool bSave = true);
+ bool ConvertToKey(ONDXKey* rKey, sal_uInt32 nRec, const ORowSetValue& rValue);
+ };
+
+ SvStream& WriteODbaseIndex(SvStream &rStream, ODbaseIndex&);
+ SvStream& operator >> (SvStream &rStream, ODbaseIndex&);
+
+ void ReadHeader(SvStream & rStream, ODbaseIndex::NDXHeader & rHeader);
+ }
+}
+
+#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEX_HXX
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */