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Avoid redundant SysCache searches in coerce_type, for another 

few percent speedup in INSERT...
This commit is contained in:
Tom Lane 1999-05-29 03:17:20 +00:00
parent b325dab67a
commit 1bdd7c68c0
4 changed files with 24 additions and 37 deletions
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12
src/backend/parser/parse_coerce.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_coerce.c,v 2.16 1999/05/25 16:10:15 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_coerce.c,v 2.17 1999/05/29 03:17:19 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -39,6 +39,7 @@ coerce_type(ParseState *pstate, Node *node, Oid inputTypeId, Oid targetTypeId,
int32 atttypmod)
{
Node *result = NULL;
Type targetType;
Oid infunc;
Datum val;
@ -79,10 +80,11 @@ coerce_type(ParseState *pstate, Node *node, Oid inputTypeId, Oid targetTypeId,
Const *con = (Const *) node;
val = (Datum) textout((struct varlena *) con->constvalue);
infunc = typeidInfunc(targetTypeId);
targetType = typeidType(targetTypeId);
infunc = typeInfunc(targetType);
con = makeNode(Const);
con->consttype = targetTypeId;
con->constlen = typeLen(typeidType(targetTypeId));
con->constlen = typeLen(targetType);
/*
* Use "-1" for varchar() type. For char(), we need to pad
@ -92,10 +94,10 @@ coerce_type(ParseState *pstate, Node *node, Oid inputTypeId, Oid targetTypeId,
*/
con->constvalue = (Datum) fmgr(infunc,
val,
typeidTypElem(targetTypeId),
typeTypElem(targetType),
(targetTypeId != BPCHAROID) ? -1 : atttypmod);
con->constisnull = false;
con->constbyval = typeByVal(typeidType(targetTypeId));
con->constbyval = typeByVal(targetType);
con->constisset = false;
result = (Node *) con;
}

4
src/backend/parser/parse_target.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_target.c,v 1.40 1999/05/25 16:10:21 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_target.c,v 1.41 1999/05/29 03:17:20 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -241,7 +241,7 @@ MakeTargetEntryExpr(ParseState *pstate,
Oid typelem;
if (arrayRef && !(((A_Indices *) lfirst(arrayRef))->lidx))
typelem = typeidTypElem(attrtype);
typelem = typeTypElem(typeidType(attrtype));
else
typelem = attrtype;

39
src/backend/parser/parse_type.c
View File

@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_type.c,v 1.21 1999/05/25 16:10:22 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_type.c,v 1.22 1999/05/29 03:17:19 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -58,7 +58,7 @@ typeidTypeName(Oid id)
return (typetuple->typname).data;
}
/* return a Type structure, given an typid */
/* return a Type structure, given a type id */
Type
typeidType(Oid id)
{
@ -180,7 +180,6 @@ typeidTypeRelid(Oid type_id)
{
HeapTuple typeTuple;
Form_pg_type type;
Oid infunc;
typeTuple = SearchSysCacheTuple(TYPOID,
ObjectIdGetDatum(type_id),
@ -189,8 +188,7 @@ typeidTypeRelid(Oid type_id)
elog(ERROR, "typeidTypeRelid: Invalid type - oid = %u", type_id);
type = (Form_pg_type) GETSTRUCT(typeTuple);
infunc = type->typrelid;
return infunc;
return type->typrelid;
}
Oid
@ -204,18 +202,13 @@ typeTypeRelid(Type typ)
}
Oid
typeidTypElem(Oid type_id)
typeTypElem(Type typ)
{
HeapTuple typeTuple;
Form_pg_type type;
Form_pg_type typtup;
if (!(typeTuple = SearchSysCacheTuple(TYPOID,
ObjectIdGetDatum(type_id),
0, 0, 0)))
elog(ERROR, "type id lookup of %u failed", type_id);
type = (Form_pg_type) GETSTRUCT(typeTuple);
typtup = (Form_pg_type) GETSTRUCT(typ);
return type->typelem;
return typtup->typelem;
}
/* Given the attribute type of an array return the attribute type of
@ -247,21 +240,13 @@ GetArrayElementType(Oid typearray)
return type_struct_array->typelem;
}
/* Given a type id, returns the in-conversion function of the type */
/* Given a type structure, return the in-conversion function of the type */
Oid
typeidInfunc(Oid type_id)
typeInfunc(Type typ)
{
HeapTuple typeTuple;
Form_pg_type type;
Oid infunc;
Form_pg_type typtup;
typeTuple = SearchSysCacheTuple(TYPOID,
ObjectIdGetDatum(type_id),
0, 0, 0);
if (!HeapTupleIsValid(typeTuple))
elog(ERROR, "typeidInfunc: Invalid type - oid = %u", type_id);
typtup = (Form_pg_type) GETSTRUCT(typ);
type = (Form_pg_type) GETSTRUCT(typeTuple);
infunc = type->typinput;
return infunc;
return typtup->typinput;
}

6
src/include/parser/parse_type.h
View File

@ -6,7 +6,7 @@
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_type.h,v 1.9 1998/10/08 18:30:39 momjian Exp $
* $Id: parse_type.h,v 1.10 1999/05/29 03:17:19 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -29,8 +29,8 @@ extern char typeTypeFlag(Type t);
extern char *stringTypeString(Type tp, char *string, int32 atttypmod);
extern Oid typeidTypeRelid(Oid type_id);
extern Oid typeTypeRelid(Type typ);
extern Oid typeidTypElem(Oid type_id);
extern Oid typeTypElem(Type typ);
extern Oid GetArrayElementType(Oid typearray);
extern Oid typeidInfunc(Oid type_id);
extern Oid typeInfunc(Type typ);
#endif /* PARSE_TYPE_H */