Initial community commit

Src/nde/Index.h

@@ -0,0 +1,83 @@
+/* ---------------------------------------------------------------------------
+                           Nullsoft Database Engine
+                             --------------------
+                        codename: Near Death Experience
+--------------------------------------------------------------------------- */
+
+/* ---------------------------------------------------------------------------
+
+ Raw Index Class Prototypes
+
+--------------------------------------------------------------------------- */
+
+#ifndef __RAWINDEX_H
+#define __RAWINDEX_H
+
+#include <stdio.h>
+#ifdef WIN32
+#include <io.h>
+#else
+#include <unistd.h>
+#endif
+#include "vfs.h"
+#include "Table.h"
+
+class IndexField;
+#define BLOCK_SIZE 2048 // 8192 entries blocks
+class RecordBase;
+class Index
+{
+public:
+	Index(VFILE *Handle, unsigned char id, int pos, int type, bool newindex, int nentries, Table *parentTable);
+	~Index();
+	int Get(int Idx);
+	void Set(int Idx, int P);
+
+	void LoadIndex(bool newindex);
+	void WriteIndex(void);
+	int Insert(Index *parindex, int N, bool localonly);
+	int Insert(int N);
+	int Update(int Idx, int Pos, RecordBase *record, bool localonly);
+	int Update(Index *parindex, int paridx, int Idx, int Pos, RecordBase *record, bool forceLast, bool localonly);
+	unsigned char GetId();
+
+	int FindSortedPlace(Field *field, int idx, int *laststate, int start);
+	int FindSortedPlaceEx(Field *field, int idx, int *laststate, int start, int comp_mode);
+	int MoveIndex(int idx, int newidx);
+	void Colaborate(IndexField *secindex);
+	void SetCooperative(int Idx, int secpos);
+	int GetCooperative(int Idx);
+	void UpdateMe(Index *Me, int newidx, int oldidx);
+	Field *QuickFindField(unsigned char Id, int Pos);
+	int QuickFind(int Id, Field *field, int start);
+	int QuickFindEx(int Id, Field *field, int start, int comp_mode);
+	int TranslateIndex(int Pos, Index *index);
+	void Delete(int Idx, int Pos, Record *record);
+	void Shrink(void);
+
+	void Propagate(void);
+	void SetGlobalLocateUpToDate(bool isUptodate);
+	int NeedFix();
+
+public:
+	// TODO: make these protected
+	int NEntries;
+	IndexField *SecIndex;
+	bool locateUpToDate;
+
+protected:
+	VFILE *Handle;
+	VFILE *TableHandle;
+	Table *pTable;
+
+	int *IndexTable;
+	size_t MaxSize;
+	unsigned char Id;
+
+	bool InChain;
+	int Position;
+	bool InInsert;
+	int InChainIdx;
+};
+
+#endif