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Add the sqlite3_whereinfo_hook() API - an experimental API replacing the

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DBCONFIG_WHEREINFO hack on this branch.

FossilOrigin-Name: a54aef35da11f7508a8888a159372036a362fc52afa1df752dc835db334c4330
This commit is contained in:
dan
2017-04-04 04:23:06 +00:00
parent fbf3bdcdbc
commit e86573fa51
7 changed files with 189 additions and 89 deletions
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27
src/main.c
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@@ -801,13 +801,6 @@ int sqlite3_db_config(sqlite3 *db, int op, ...){
rc = setupLookaside(db, pBuf, sz, cnt);
break;
}
#ifdef SQLITE_SCHEMA_LINT
case SQLITE_DBCONFIG_WHEREINFO: {
db->xWhereInfo = va_arg(ap, void(*)(void*, int, const char*, int, i64));
db->pWhereInfoCtx = va_arg(ap, void*);
break;
}
#endif
default: {
static const struct {
int op; /* The opcode */
@@ -2004,6 +1997,26 @@ void *sqlite3_preupdate_hook(
}
#endif /* SQLITE_ENABLE_PREUPDATE_HOOK */
#ifdef SQLITE_ENABLE_WHEREINFO_HOOK
/*
** Register a where-info hook.
*/
void *sqlite3_whereinfo_hook(
sqlite3 *db, /* Register callback with this db handle */
void (*xWhereInfo)(void*, int, const char*, int, sqlite3_uint64),
void *pCtx /* User pointer passed to callback */
){
void *pRet;
sqlite3_mutex_enter(db->mutex);
pRet = db->pWhereInfoCtx;
db->xWhereInfo = xWhereInfo;
db->pWhereInfoCtx = pCtx;
sqlite3_mutex_leave(db->mutex);
return pRet;
}
#endif /* SQLITE_ENABLE_WHEREINFO_HOOK */
#ifndef SQLITE_OMIT_WAL
/*
** The sqlite3_wal_hook() callback registered by sqlite3_wal_autocheckpoint().