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Pass collations to functions in FunctionCallInfoData, not FmgrInfo.

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Since collation is effectively an argument, not a property of the function,
FmgrInfo is really the wrong place for it; and this becomes critical in
cases where a cached FmgrInfo is used for varying purposes that might need
different collation settings.  Fix by passing it in FunctionCallInfoData
instead.  In particular this allows a clean fix for bug #5970 (record_cmp
not working).  This requires touching a bit more code than the original
method, but nobody ever thought that collations would not be an invasive
patch...
This commit is contained in:
Tom Lane
2011-04-12 19:19:24 -04:00
parent 88543ecfec
commit d64713df7e
49 changed files with 552 additions and 418 deletions
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8
src/backend/executor/functions.c
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@ -127,7 +127,7 @@ static Node *sql_fn_param_ref(ParseState *pstate, ParamRef *pref);
static List *init_execution_state(List *queryTree_list,
SQLFunctionCachePtr fcache,
bool lazyEvalOK);
static void init_sql_fcache(FmgrInfo *finfo, bool lazyEvalOK);
static void init_sql_fcache(FmgrInfo *finfo, Oid collation, bool lazyEvalOK);
static void postquel_start(execution_state *es, SQLFunctionCachePtr fcache);
static bool postquel_getnext(execution_state *es, SQLFunctionCachePtr fcache);
static void postquel_end(execution_state *es);
@ -363,7 +363,7 @@ init_execution_state(List *queryTree_list,
* Initialize the SQLFunctionCache for a SQL function
*/
static void
init_sql_fcache(FmgrInfo *finfo, bool lazyEvalOK)
init_sql_fcache(FmgrInfo *finfo, Oid collation, bool lazyEvalOK)
{
Oid foid = finfo->fn_oid;
Oid rettype;
@ -428,7 +428,7 @@ init_sql_fcache(FmgrInfo *finfo, bool lazyEvalOK)
*/
fcache->pinfo = prepare_sql_fn_parse_info(procedureTuple,
finfo->fn_expr,
finfo->fn_collation);
collation);
/*
* And of course we need the function body text.
@ -798,7 +798,7 @@ fmgr_sql(PG_FUNCTION_ARGS)
fcache = (SQLFunctionCachePtr) fcinfo->flinfo->fn_extra;
if (fcache == NULL)
{
init_sql_fcache(fcinfo->flinfo, lazyEvalOK);
init_sql_fcache(fcinfo->flinfo, PG_GET_COLLATION(), lazyEvalOK);
fcache = (SQLFunctionCachePtr) fcinfo->flinfo->fn_extra;
}
eslist = fcache->func_state;