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Overview
Comment:Add column_value, declare_vtab and create_module to the function table used by dynamic extensions. (CVS 3256)
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SHA1:25c475087892fea83bce9d140b46651793b85a86
User & Date: danielk1977 2006-06-15 15:38:42
Context
2006-06-15
15:59
Add test_schema.c, containing a module for viewing the database schema via a virtual table. (CVS 3257) check-in: de8d32ac user: danielk1977 tags: trunk
15:38
Add column_value, declare_vtab and create_module to the function table used by dynamic extensions. (CVS 3256) check-in: 25c47508 user: danielk1977 tags: trunk
14:31
Write database pages in sorted order to reduce file fragmentation. This is an experimental change. It is not clear if it will help any. It may well be removed in the future. (CVS 3255) check-in: fe3e70a7 user: drh tags: trunk
Changes
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Changes to src/loadext.c. 

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  sqlite3_column_origin_name,
  sqlite3_column_origin_name16,
  sqlite3_column_table_name,
  sqlite3_column_table_name16,
  sqlite3_column_text,
  sqlite3_column_text16,
  sqlite3_column_type,

  sqlite3_commit_hook,
  sqlite3_complete,
  sqlite3_complete16,
  sqlite3_create_collation,
  sqlite3_create_collation16,
  sqlite3_create_function,
  sqlite3_create_function16,

  sqlite3_data_count,
  sqlite3_db_handle,

  sqlite3_enable_shared_cache,
  sqlite3_errcode,
  sqlite3_errmsg,
  sqlite3_errmsg16,
  sqlite3_exec,
  sqlite3_expired,
  sqlite3_finalize,








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  sqlite3_column_origin_name,
  sqlite3_column_origin_name16,
  sqlite3_column_table_name,
  sqlite3_column_table_name16,
  sqlite3_column_text,
  sqlite3_column_text16,
  sqlite3_column_type,
  sqlite3_column_value,
  sqlite3_commit_hook,
  sqlite3_complete,
  sqlite3_complete16,
  sqlite3_create_collation,
  sqlite3_create_collation16,
  sqlite3_create_function,
  sqlite3_create_function16,
  sqlite3_create_module,
  sqlite3_data_count,
  sqlite3_db_handle,
  sqlite3_declare_vtab,
  sqlite3_enable_shared_cache,
  sqlite3_errcode,
  sqlite3_errmsg,
  sqlite3_errmsg16,
  sqlite3_exec,
  sqlite3_expired,
  sqlite3_finalize,

Changes to src/sqlite3ext.h. 

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*************************************************************************
** This header file defines the SQLite interface for use by
** shared libraries that want to be imported as extensions into
** an SQLite instance.  Shared libraries that intend to be loaded
** as extensions by SQLite should #include this file instead of 
** sqlite3.h.
**
** @(#) $Id: sqlite3ext.h,v 1.1 2006/06/08 15:28:44 drh Exp $
*/
#ifndef _SQLITE3EXT_H_
#define _SQLITE3EXT_H_
#include <sqlite3.h>

typedef struct sqlite3_api_routines sqlite3_api_routines;

................................................................................
  const char * (*column_origin_name)(sqlite3_stmt*,int);
  const void * (*column_origin_name16)(sqlite3_stmt*,int);
  const char * (*column_table_name)(sqlite3_stmt*,int);
  const void * (*column_table_name16)(sqlite3_stmt*,int);
  const unsigned char * (*column_text)(sqlite3_stmt*,int iCol);
  const void * (*column_text16)(sqlite3_stmt*,int iCol);
  int  (*column_type)(sqlite3_stmt*,int iCol);

  void * (*commit_hook)(sqlite3*,int(*)(void*),void*);
  int  (*complete)(const char*sql);
  int  (*complete16)(const void*sql);
  int  (*create_collation)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*));
  int  (*create_collation16)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*));
  int  (*create_function)(sqlite3*,const char*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
  int  (*create_function16)(sqlite3*,const void*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));

  int  (*data_count)(sqlite3_stmt*pStmt);
  sqlite3 * (*db_handle)(sqlite3_stmt*);

  int  (*enable_shared_cache)(int);
  int  (*errcode)(sqlite3*db);
  const char * (*errmsg)(sqlite3*);
  const void * (*errmsg16)(sqlite3*);
  int  (*exec)(sqlite3*,const char*,sqlite3_callback,void*,char**);
  int  (*expired)(sqlite3_stmt*);
  int  (*finalize)(sqlite3_stmt*pStmt);
................................................................................
#define sqlite3_column_origin_name     sqlite3_api->column_origin_name
#define sqlite3_column_origin_name16   sqlite3_api->column_origin_name16
#define sqlite3_column_table_name      sqlite3_api->column_table_name
#define sqlite3_column_table_name16    sqlite3_api->column_table_name16
#define sqlite3_column_text            sqlite3_api->column_text
#define sqlite3_column_text16          sqlite3_api->column_text16
#define sqlite3_column_type            sqlite3_api->column_type

#define sqlite3_commit_hook            sqlite3_api->commit_hook
#define sqlite3_complete               sqlite3_api->complete
#define sqlite3_complete16             sqlite3_api->complete16
#define sqlite3_create_collation       sqlite3_api->create_collation
#define sqlite3_create_collation16     sqlite3_api->create_collation16
#define sqlite3_create_function        sqlite3_api->create_function
#define sqlite3_create_function16      sqlite3_api->create_function16

#define sqlite3_data_count             sqlite3_api->data_count
#define sqlite3_db_handle              sqlite3_api->db_handle

#define sqlite3_enable_shared_cache    sqlite3_api->enable_shared_cache
#define sqlite3_errcode                sqlite3_api->errcode
#define sqlite3_errmsg                 sqlite3_api->errmsg
#define sqlite3_errmsg16               sqlite3_api->errmsg16
#define sqlite3_exec                   sqlite3_api->exec
#define sqlite3_expired                sqlite3_api->expired
#define sqlite3_finalize               sqlite3_api->finalize








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*************************************************************************
** This header file defines the SQLite interface for use by
** shared libraries that want to be imported as extensions into
** an SQLite instance.  Shared libraries that intend to be loaded
** as extensions by SQLite should #include this file instead of 
** sqlite3.h.
**
** @(#) $Id: sqlite3ext.h,v 1.2 2006/06/15 15:38:42 danielk1977 Exp $
*/
#ifndef _SQLITE3EXT_H_
#define _SQLITE3EXT_H_
#include <sqlite3.h>

typedef struct sqlite3_api_routines sqlite3_api_routines;

................................................................................
  const char * (*column_origin_name)(sqlite3_stmt*,int);
  const void * (*column_origin_name16)(sqlite3_stmt*,int);
  const char * (*column_table_name)(sqlite3_stmt*,int);
  const void * (*column_table_name16)(sqlite3_stmt*,int);
  const unsigned char * (*column_text)(sqlite3_stmt*,int iCol);
  const void * (*column_text16)(sqlite3_stmt*,int iCol);
  int  (*column_type)(sqlite3_stmt*,int iCol);
  sqlite3_value* (*column_value)(sqlite3_stmt*,int iCol);
  void * (*commit_hook)(sqlite3*,int(*)(void*),void*);
  int  (*complete)(const char*sql);
  int  (*complete16)(const void*sql);
  int  (*create_collation)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*));
  int  (*create_collation16)(sqlite3*,const char*,int,void*,int(*)(void*,int,const void*,int,const void*));
  int  (*create_function)(sqlite3*,const char*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
  int  (*create_function16)(sqlite3*,const void*,int,int,void*,void (*xFunc)(sqlite3_context*,int,sqlite3_value**),void (*xStep)(sqlite3_context*,int,sqlite3_value**),void (*xFinal)(sqlite3_context*));
  int (*create_module)(sqlite3*,const char*,sqlite3_module*,void*);
  int  (*data_count)(sqlite3_stmt*pStmt);
  sqlite3 * (*db_handle)(sqlite3_stmt*);
  int (*declare_vtab)(sqlite3*,const char*);
  int  (*enable_shared_cache)(int);
  int  (*errcode)(sqlite3*db);
  const char * (*errmsg)(sqlite3*);
  const void * (*errmsg16)(sqlite3*);
  int  (*exec)(sqlite3*,const char*,sqlite3_callback,void*,char**);
  int  (*expired)(sqlite3_stmt*);
  int  (*finalize)(sqlite3_stmt*pStmt);
................................................................................
#define sqlite3_column_origin_name     sqlite3_api->column_origin_name
#define sqlite3_column_origin_name16   sqlite3_api->column_origin_name16
#define sqlite3_column_table_name      sqlite3_api->column_table_name
#define sqlite3_column_table_name16    sqlite3_api->column_table_name16
#define sqlite3_column_text            sqlite3_api->column_text
#define sqlite3_column_text16          sqlite3_api->column_text16
#define sqlite3_column_type            sqlite3_api->column_type
#define sqlite3_column_value           sqlite3_api->column_value
#define sqlite3_commit_hook            sqlite3_api->commit_hook
#define sqlite3_complete               sqlite3_api->complete
#define sqlite3_complete16             sqlite3_api->complete16
#define sqlite3_create_collation       sqlite3_api->create_collation
#define sqlite3_create_collation16     sqlite3_api->create_collation16
#define sqlite3_create_function        sqlite3_api->create_function
#define sqlite3_create_function16      sqlite3_api->create_function16
#define sqlite3_create_module          sqlite3_api->create_module
#define sqlite3_data_count             sqlite3_api->data_count
#define sqlite3_db_handle              sqlite3_api->db_handle
#define sqlite3_declare_vtab           sqlite3_api->declare_vtab
#define sqlite3_enable_shared_cache    sqlite3_api->enable_shared_cache
#define sqlite3_errcode                sqlite3_api->errcode
#define sqlite3_errmsg                 sqlite3_api->errmsg
#define sqlite3_errmsg16               sqlite3_api->errmsg16
#define sqlite3_exec                   sqlite3_api->exec
#define sqlite3_expired                sqlite3_api->expired
#define sqlite3_finalize               sqlite3_api->finalize

Changes to src/test8.c. 

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**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing the virtual table interfaces.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test8.c,v 1.22 2006/06/15 10:41:16 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

typedef struct echo_vtab echo_vtab;
typedef struct echo_cursor echo_cursor;

/* 
** An echo virtual-table object 
**
** If it is not NULL, the aHasIndex array is allocated so that it has
** the same number of entries as there are columns in the underlying
** real table.



*/
struct echo_vtab {
  sqlite3_vtab base;
  Tcl_Interp *interp;
  sqlite3 *db;

  char *zTableName;       /* Name of the real table */








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**    May you share freely, never taking more than you give.
**
*************************************************************************
** Code for testing the virtual table interfaces.  This code
** is not included in the SQLite library.  It is used for automated
** testing of the SQLite library.
**
** $Id: test8.c,v 1.23 2006/06/15 15:38:42 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
#include "os.h"
#include <stdlib.h>
#include <string.h>

typedef struct echo_vtab echo_vtab;
typedef struct echo_cursor echo_cursor;

/* 
** An echo virtual-table object.
**
** echo.vtab.aIndex is an array of booleans. The nth entry is true if 
** the nth column of the real table is the left-most column of an index
** (implicit or otherwise). In other words, if SQLite can optimize
** a query like "SELECT * FROM real_table WHERE col = ?".
**
** Member variable contains copies of the column names of the real table.
*/
struct echo_vtab {
  sqlite3_vtab base;
  Tcl_Interp *interp;
  sqlite3 *db;

  char *zTableName;       /* Name of the real table */

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