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Implement new-protocol binary I/O support in DataRow, Bind, and FunctionCall

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messages.  Binary I/O is now up and working, but only for a small set
of datatypes (integers, text, bytea).
This commit is contained in:
Tom Lane
2003-05-09 18:08:48 +00:00
parent d85a0a6bef
commit 0ac6298bb8
7 changed files with 434 additions and 344 deletions
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89
src/backend/utils/cache/lsyscache.c vendored
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@ -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 1.92 2003/04/08 23:20:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.93 2003/05/09 18:08:48 tgl Exp $
*
* NOTES
* Eventually, the index information should go through here, too.
@ -1361,11 +1361,15 @@ getTypeInputInfo(Oid type, Oid *typInput, Oid *typElem)
ObjectIdGetDatum(type),
0, 0, 0);
if (!HeapTupleIsValid(typeTuple))
elog(ERROR, "getTypeInputInfo: Cache lookup of type %u failed", type);
elog(ERROR, "Cache lookup of type %u failed", type);
pt = (Form_pg_type) GETSTRUCT(typeTuple);
if (!pt->typisdefined)
elog(ERROR, "Type \"%s\" is only a shell", NameStr(pt->typname));
elog(ERROR, "Type %s is only a shell",
format_type_be(type));
if (!OidIsValid(pt->typinput))
elog(ERROR, "No input function available for type %s",
format_type_be(type));
*typInput = pt->typinput;
*typElem = pt->typelem;
@ -1377,10 +1381,8 @@ getTypeInputInfo(Oid type, Oid *typInput, Oid *typElem)
* getTypeOutputInfo
*
* Get info needed for printing values of a type
*
* Returns true if data valid (a false result probably means it's a shell type)
*/
bool
void
getTypeOutputInfo(Oid type, Oid *typOutput, Oid *typElem,
bool *typIsVarlena)
{
@ -1391,14 +1393,85 @@ getTypeOutputInfo(Oid type, Oid *typOutput, Oid *typElem,
ObjectIdGetDatum(type),
0, 0, 0);
if (!HeapTupleIsValid(typeTuple))
elog(ERROR, "getTypeOutputInfo: Cache lookup of type %u failed", type);
elog(ERROR, "Cache lookup of type %u failed", type);
pt = (Form_pg_type) GETSTRUCT(typeTuple);
if (!pt->typisdefined)
elog(ERROR, "Type %s is only a shell",
format_type_be(type));
if (!OidIsValid(pt->typoutput))
elog(ERROR, "No output function available for type %s",
format_type_be(type));
*typOutput = pt->typoutput;
*typElem = pt->typelem;
*typIsVarlena = (!pt->typbyval) && (pt->typlen == -1);
ReleaseSysCache(typeTuple);
}
/*
* getTypeBinaryInputInfo
*
* Get info needed for binary input of values of a type
*/
void
getTypeBinaryInputInfo(Oid type, Oid *typReceive, Oid *typElem)
{
HeapTuple typeTuple;
Form_pg_type pt;
typeTuple = SearchSysCache(TYPEOID,
ObjectIdGetDatum(type),
0, 0, 0);
if (!HeapTupleIsValid(typeTuple))
elog(ERROR, "Cache lookup of type %u failed", type);
pt = (Form_pg_type) GETSTRUCT(typeTuple);
if (!pt->typisdefined)
elog(ERROR, "Type %s is only a shell",
format_type_be(type));
if (!OidIsValid(pt->typreceive))
elog(ERROR, "No binary input function available for type %s",
format_type_be(type));
*typReceive = pt->typreceive;
*typElem = pt->typelem;
ReleaseSysCache(typeTuple);
}
/*
* getTypeBinaryOutputInfo
*
* Get info needed for binary output of values of a type
*/
void
getTypeBinaryOutputInfo(Oid type, Oid *typSend, Oid *typElem,
bool *typIsVarlena)
{
HeapTuple typeTuple;
Form_pg_type pt;
typeTuple = SearchSysCache(TYPEOID,
ObjectIdGetDatum(type),
0, 0, 0);
if (!HeapTupleIsValid(typeTuple))
elog(ERROR, "Cache lookup of type %u failed", type);
pt = (Form_pg_type) GETSTRUCT(typeTuple);
if (!pt->typisdefined)
elog(ERROR, "Type %s is only a shell",
format_type_be(type));
if (!OidIsValid(pt->typsend))
elog(ERROR, "No binary output function available for type %s",
format_type_be(type));
*typSend = pt->typsend;
*typElem = pt->typelem;
*typIsVarlena = (!pt->typbyval) && (pt->typlen == -1);
ReleaseSysCache(typeTuple);
return OidIsValid(*typOutput);
}