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Store application-defined function names as lower-case to avoid the need

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for case conversions before calling xFindFunction on virtual tables.
Avoid using lookaside to store the destructors for application defined
functions, as lookaside should be reserved for transient allocations.

FossilOrigin-Name: 777189ce88799f93f393fd14fd716111c85bcdcb23690fd561f78ea2bd2ce5da
This commit is contained in:
drh
2018-05-26 16:00:26 +00:00
parent 7fc86b96ba
commit 9201184711
8 changed files with 63 additions and 55 deletions
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22
src/vdbeapi.c
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@@ -787,28 +787,6 @@ sqlite3_int64 sqlite3StmtCurrentTime(sqlite3_context *p){
return *piTime;
}
/*
** The following is the implementation of an SQL function that always
** fails with an error message stating that the function is used in the
** wrong context. The sqlite3_overload_function() API might construct
** SQL function that use this routine so that the functions will exist
** for name resolution but are actually overloaded by the xFindFunction
** method of virtual tables.
*/
void sqlite3InvalidFunction(
sqlite3_context *context, /* The function calling context */
int NotUsed, /* Number of arguments to the function */
sqlite3_value **NotUsed2 /* Value of each argument */
){
const char *zName = context->pFunc->zName;
char *zErr;
UNUSED_PARAMETER2(NotUsed, NotUsed2);
zErr = sqlite3_mprintf(
"unable to use function %s in the requested context", zName);
sqlite3_result_error(context, zErr, -1);
sqlite3_free(zErr);
}
/*
** Create a new aggregate context for p and return a pointer to
** its pMem->z element.