diff options
Diffstat (limited to 'src/backend/utils/cache/lsyscache.c')
| -rw-r--r-- | src/backend/utils/cache/lsyscache.c | 49 |
1 files changed, 28 insertions, 21 deletions
diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c index b788383ba5..b359651b9b 100644 --- a/src/backend/utils/cache/lsyscache.c +++ b/src/backend/utils/cache/lsyscache.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.58 2001/09/06 02:07:42 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.59 2001/10/25 05:49:46 momjian Exp $ * * NOTES * Eventually, the index information should go through here, too. @@ -589,7 +589,6 @@ get_relnatts(Oid relid) else return InvalidAttrNumber; } - #endif /* @@ -723,7 +722,6 @@ get_typalign(Oid typid) else return 'i'; } - #endif char @@ -778,8 +776,8 @@ get_typdefault(Oid typid, Datum *defaultValue) typelem = type->typelem; /* - * typdefault is potentially null, so don't try to access it as a struct - * field. Must do it the hard way with SysCacheGetAttr. + * typdefault is potentially null, so don't try to access it as a + * struct field. Must do it the hard way with SysCacheGetAttr. */ textDefaultVal = SysCacheGetAttr(TYPEOID, typeTuple, @@ -828,6 +826,7 @@ get_typavgwidth(Oid typid, int32 typmod) */ if (typlen > 0) return typlen; + /* * type_maximum_size knows the encoding of typmod for some datatypes; * don't duplicate that knowledge here. @@ -836,16 +835,17 @@ get_typavgwidth(Oid typid, int32 typmod) if (maxwidth > 0) { /* - * For BPCHAR, the max width is also the only width. Otherwise - * we need to guess about the typical data width given the max. - * A sliding scale for percentage of max width seems reasonable. + * For BPCHAR, the max width is also the only width. Otherwise we + * need to guess about the typical data width given the max. A + * sliding scale for percentage of max width seems reasonable. */ if (typid == BPCHAROID) return maxwidth; if (maxwidth <= 32) return maxwidth; /* assume full width */ if (maxwidth < 1000) - return 32 + (maxwidth - 32) / 2; /* assume 50% */ + return 32 + (maxwidth - 32) / 2; /* assume 50% */ + /* * Beyond 1000, assume we're looking at something like * "varchar(10000)" where the limit isn't actually reached often, @@ -853,6 +853,7 @@ get_typavgwidth(Oid typid, int32 typmod) */ return 32 + (1000 - 32) / 2; } + /* * Ooops, we have no idea ... wild guess time. */ @@ -887,7 +888,6 @@ get_typtype(Oid typid) else return '\0'; } - #endif /* ---------- STATISTICS CACHE ---------- */ @@ -909,7 +909,7 @@ get_attavgwidth(Oid relid, AttrNumber attnum) 0, 0); if (HeapTupleIsValid(tp)) { - int32 stawidth = ((Form_pg_statistic) GETSTRUCT(tp))->stawidth; + int32 stawidth = ((Form_pg_statistic) GETSTRUCT(tp))->stawidth; ReleaseSysCache(tp); if (stawidth > 0) @@ -977,14 +977,17 @@ get_attstatsslot(HeapTuple statstuple, if (isnull) elog(ERROR, "get_attstatsslot: stavalues is null"); statarray = DatumGetArrayTypeP(val); + /* - * Do initial examination of the array. This produces a list - * of text Datums --- ie, pointers into the text array value. + * Do initial examination of the array. This produces a list of + * text Datums --- ie, pointers into the text array value. */ deconstruct_array(statarray, false, -1, 'i', values, nvalues); narrayelem = *nvalues; + /* - * We now need to replace each text Datum by its internal equivalent. + * We now need to replace each text Datum by its internal + * equivalent. * * Get the type input proc and typelem for the column datatype. */ @@ -997,9 +1000,10 @@ get_attstatsslot(HeapTuple statstuple, fmgr_info(((Form_pg_type) GETSTRUCT(typeTuple))->typinput, &inputproc); typelem = ((Form_pg_type) GETSTRUCT(typeTuple))->typelem; ReleaseSysCache(typeTuple); + /* - * Do the conversions. The palloc'd array of Datums is reused - * in place. + * Do the conversions. The palloc'd array of Datums is reused in + * place. */ for (j = 0; j < narrayelem; j++) { @@ -1013,6 +1017,7 @@ get_attstatsslot(HeapTuple statstuple, Int32GetDatum(atttypmod)); pfree(strval); } + /* * Free statarray if it's a detoasted copy. */ @@ -1028,10 +1033,11 @@ get_attstatsslot(HeapTuple statstuple, if (isnull) elog(ERROR, "get_attstatsslot: stanumbers is null"); statarray = DatumGetArrayTypeP(val); + /* - * We expect the array to be a 1-D float4 array; verify that. - * We don't need to use deconstruct_array() since the array - * data is just going to look like a C array of float4 values. + * We expect the array to be a 1-D float4 array; verify that. We + * don't need to use deconstruct_array() since the array data is + * just going to look like a C array of float4 values. */ narrayelem = ARR_DIMS(statarray)[0]; if (ARR_NDIM(statarray) != 1 || narrayelem <= 0 || @@ -1040,6 +1046,7 @@ get_attstatsslot(HeapTuple statstuple, *numbers = (float4 *) palloc(narrayelem * sizeof(float4)); memcpy(*numbers, ARR_DATA_PTR(statarray), narrayelem * sizeof(float4)); *nnumbers = narrayelem; + /* * Free statarray if it's a detoasted copy. */ @@ -1057,9 +1064,9 @@ free_attstatsslot(Oid atttype, { if (values) { - if (! get_typbyval(atttype)) + if (!get_typbyval(atttype)) { - int i; + int i; for (i = 0; i < nvalues; i++) pfree(DatumGetPointer(values[i])); |