83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
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/* ---------------------------------------------------------------------------
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Nullsoft Database Engine
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--------------------
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codename: Near Death Experience
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--------------------------------------------------------------------------- */
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/* ---------------------------------------------------------------------------
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Raw Index Class Prototypes
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--------------------------------------------------------------------------- */
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#ifndef __RAWINDEX_H
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#define __RAWINDEX_H
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#include <stdio.h>
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#ifdef WIN32
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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#include "vfs.h"
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#include "Table.h"
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class IndexField;
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#define BLOCK_SIZE 2048 // 8192 entries blocks
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class RecordBase;
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class Index
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{
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public:
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Index(VFILE *Handle, unsigned char id, int pos, int type, bool newindex, int nentries, Table *parentTable);
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~Index();
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int Get(int Idx);
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void Set(int Idx, int P);
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void LoadIndex(bool newindex);
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void WriteIndex(void);
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int Insert(Index *parindex, int N, bool localonly);
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int Insert(int N);
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int Update(int Idx, int Pos, RecordBase *record, bool localonly);
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int Update(Index *parindex, int paridx, int Idx, int Pos, RecordBase *record, bool forceLast, bool localonly);
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unsigned char GetId();
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int FindSortedPlace(Field *field, int idx, int *laststate, int start);
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int FindSortedPlaceEx(Field *field, int idx, int *laststate, int start, int comp_mode);
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int MoveIndex(int idx, int newidx);
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void Colaborate(IndexField *secindex);
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void SetCooperative(int Idx, int secpos);
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int GetCooperative(int Idx);
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void UpdateMe(Index *Me, int newidx, int oldidx);
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Field *QuickFindField(unsigned char Id, int Pos);
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int QuickFind(int Id, Field *field, int start);
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int QuickFindEx(int Id, Field *field, int start, int comp_mode);
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int TranslateIndex(int Pos, Index *index);
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void Delete(int Idx, int Pos, Record *record);
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void Shrink(void);
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void Propagate(void);
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void SetGlobalLocateUpToDate(bool isUptodate);
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int NeedFix();
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public:
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// TODO: make these protected
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int NEntries;
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IndexField *SecIndex;
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bool locateUpToDate;
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protected:
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VFILE *Handle;
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VFILE *TableHandle;
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Table *pTable;
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int *IndexTable;
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size_t MaxSize;
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unsigned char Id;
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bool InChain;
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int Position;
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bool InInsert;
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int InChainIdx;
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};
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#endif
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