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Add the tentative sqlite3_allocate_queryplan() API. (CVS 3228)

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FossilOrigin-Name: 7a3e97f76b1f4f97a04f7c5a9daa400402b2ff25
This commit is contained in:
danielk1977
2006-06-13 15:00:54 +00:00
parent 5fac9f86eb
commit be8a7835ea
8 changed files with 77 additions and 40 deletions
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24
src/test8.c
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@@ -13,7 +13,7 @@
** is not included in the SQLite library. It is used for automated
** testing of the SQLite library.
**
** $Id: test8.c,v 1.9 2006/06/13 14:16:59 danielk1977 Exp $
** $Id: test8.c,v 1.10 2006/06/13 15:00:55 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "tcl.h"
@@ -344,21 +344,19 @@ static int echoRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
static int echoFilter(
sqlite3_vtab_cursor *pVtabCursor,
int idx,
char *zPlan, int nPlan,
int argc,
sqlite3_value **argv
){
int rc;
char zBuf[32];
int ii;
echo_cursor *pCur = (echo_cursor *)pVtabCursor;
echo_vtab *pVtab = (echo_vtab *)pVtabCursor->pVtab;
sqlite3 *db = pVtab->db;
sprintf(zBuf, "%d", idx);
appendToEchoModule(pVtab->interp, "xFilter");
appendToEchoModule(pVtab->interp, zBuf);
appendToEchoModule(pVtab->interp, zPlan);
for(ii=0; ii<argc; ii++){
appendToEchoModule(pVtab->interp, sqlite3_value_text(argv[ii]));
}
@@ -390,6 +388,8 @@ static int echoBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
int ii;
char *zWhere = 0;
char *zOrder = 0;
char *zPlan = 0;
int nPlan = 0;
int nArg = 0;
echo_vtab *pVtab = (echo_vtab *)tab;
@@ -435,10 +435,22 @@ static int echoBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
appendToEchoModule(pVtab->interp, zWhere);
appendToEchoModule(pVtab->interp, zOrder);
nPlan = 2;
if( zWhere ){
nPlan += strlen(zWhere);
}
if( zOrder ){
nPlan += strlen(zWhere);
}
zPlan = sqlite3_allocate_queryplan(pIdxInfo, nPlan);
if( zPlan ){
sprintf(zPlan, "%s%s%s",
zWhere?zWhere:"", (zOrder&&zWhere)?" ":"", zOrder?zOrder:"");
}
sqliteFree(zWhere);
sqliteFree(zOrder);
pIdxInfo->idxNum = 123;
return SQLITE_OK;
}