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The code is in place to replace GDBM with BTree. But I have not yet

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attempted to compile it.  I am sure the code contains bugs. (CVS 238)

FossilOrigin-Name: 6ecc8b20d4f402f45f03d46d8d4fa40dea666e97
This commit is contained in:
drh
2001-09-13 13:46:56 +00:00
parent 5c4d9703d9
commit 5e00f6c7d5
20 changed files with 3910 additions and 2679 deletions
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37
src/sqliteInt.h
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@@ -23,10 +23,9 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.42 2001/04/28 16:52:42 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.43 2001/09/13 13:46:57 drh Exp $
*/
#include "sqlite.h"
#include "dbbe.h"
#include "vdbe.h"
#include "parse.h"
#ifndef DISABLE_GDBM
@@ -136,23 +135,24 @@ typedef struct AggExpr AggExpr;
** Each database is an instance of the following structure
*/
struct sqlite {
Dbbe *pBe; /* The backend driver */
int flags; /* Miscellanous flags. See below */
int file_format; /* What file format version is this database? */
int nTable; /* Number of tables in the database */
void *pBusyArg; /* 1st Argument to the busy callback */
Btree *pBe; /* The B*Tree backend */
int flags; /* Miscellanous flags. See below */
int file_format; /* What file format version is this database? */
int nTable; /* Number of tables in the database */
void *pBusyArg; /* 1st Argument to the busy callback */
int (*xBusyCallback)(void *,const char*,int); /* The busy callback */
Table *apTblHash[N_HASH]; /* All tables of the database */
Index *apIdxHash[N_HASH]; /* All indices of the database */
Table *apTblHash[N_HASH]; /* All tables of the database */
Index *apIdxHash[N_HASH]; /* All indices of the database */
};
/*
** Possible values for the sqlite.flags.
*/
#define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */
#define SQLITE_Initialized 0x00000002 /* True after initialization */
#define SQLITE_Interrupt 0x00000004 /* Cancel current operation */
#define SQLITE_InTrans 0x00000008 /* True if in a transaction */
#define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */
#define SQLITE_Initialized 0x00000002 /* True after initialization */
#define SQLITE_Interrupt 0x00000004 /* Cancel current operation */
#define SQLITE_InTrans 0x00000008 /* True if in a transaction */
#define SQLITE_InternChanges 0x00000010 /* Uncommitted Hash table changes */
/*
** Current file format version
@@ -178,8 +178,11 @@ struct Table {
Table *pHash; /* Next table with same hash on zName */
int nCol; /* Number of columns in this table */
Column *aCol; /* Information about each column */
int readOnly; /* True if this table should not be written by the user */
Index *pIndex; /* List of SQL indexes on this table. */
int tnum; /* Page containing root for this table */
int readOnly; /* True if this table should not be written by the user */
int isCommit; /* True if creation of this table has been committed */
int isDelete; /* True if deletion of this table has not been comitted */
};
/*
@@ -208,6 +211,8 @@ struct Index {
int *aiColumn; /* Which columns are used by this index. 1st is 0 */
Table *pTable; /* The SQL table being indexed */
int isUnique; /* True if keys must all be unique */
int isCommit; /* True if creation of this index has been committed */
int isDelete; /* True if deletion of this index has not been comitted */
Index *pNext; /* The next index associated with the same table */
};
@@ -342,6 +347,7 @@ struct AggExpr {
*/
struct Parse {
sqlite *db; /* The main database structure */
Btree *pBe; /* The database backend */
int rc; /* Return code from execution */
sqlite_callback xCallback; /* The callback function */
void *pArg; /* First argument to the callback function */
@@ -398,6 +404,8 @@ Expr *sqliteExprFunction(ExprList*, Token*);
void sqliteExprDelete(Expr*);
ExprList *sqliteExprListAppend(ExprList*,Expr*,Token*);
void sqliteExprListDelete(ExprList*);
void sqliteCommitInternalChanges(sqlite*);
void sqliteRollbackInternalChanges(sqlite*);
void sqliteStartTable(Parse*,Token*,Token*);
void sqliteAddColumn(Parse*,Token*);
void sqliteAddDefaultValue(Parse*,Token*,int);
@@ -442,3 +450,4 @@ void sqliteBeginTransaction(Parse*);
void sqliteCommitTransaction(Parse*);
void sqliteRollbackTransaction(Parse*);
char *sqlite_mprintf(const char *, ...);
const char *sqliteErrStr(int);