Allow args to spi_prepare to be standard type aliaes as well as those known in...

Allow args to spi_prepare to be standard type aliaes as well as those known in pg_type. Fixes bug #2917. Add some regression tests for these cases.

src/pl/plperl/expected/plperl.out

@@ -438,7 +438,7 @@ SELECT array_of_text();
 -- Test spi_prepare/spi_exec_prepared/spi_freeplan
 --
 CREATE OR REPLACE FUNCTION perl_spi_prepared(INTEGER) RETURNS INTEGER AS $$
-   my $x = spi_prepare('select $1 AS a', 'INT4');
+   my $x = spi_prepare('select $1 AS a', 'INTEGER');
    my $q = spi_exec_prepared( $x, $_[0] + 1);
    spi_freeplan($x);
 return $q->{rows}->[0]->{a};
@@ -468,3 +468,37 @@ SELECT * from perl_spi_prepared_set(1,2);
                      4
 (2 rows)
 
+--
+-- Test prepare with a type with spaces
+--
+CREATE OR REPLACE FUNCTION perl_spi_prepared_double(double precision) RETURNS double precision AS $$
+  my $x = spi_prepare('SELECT 10.0 * $1 AS a', 'DOUBLE PRECISION');
+  my $q = spi_query_prepared($x,$_[0]);
+  my $result;
+  while (defined (my $y = spi_fetchrow($q))) {
+      $result = $y->{a};
+  }
+  spi_freeplan($x);
+  return $result;
+$$ LANGUAGE plperl;
+SELECT perl_spi_prepared_double(4.35) as "double precision";
+ double precision 
+------------------
+             43.5
+(1 row)
+
+--
+-- Test with a bad type
+--
+CREATE OR REPLACE FUNCTION perl_spi_prepared_bad(double precision) RETURNS double precision AS $$
+  my $x = spi_prepare('SELECT 10.0 * $1 AS a', 'does_not_exist');
+  my $q = spi_query_prepared($x,$_[0]);
+  my $result;
+  while (defined (my $y = spi_fetchrow($q))) {
+      $result = $y->{a};
+  }
+  spi_freeplan($x);
+  return $result;
+$$ LANGUAGE plperl;
+SELECT perl_spi_prepared_bad(4.35) as "double precision";
+ERROR:  error from Perl function: type "does_not_exist" does not exist at line 2.

src/pl/plperl/plperl.c

 /**********************************************************************
  * plperl.c - perl as a procedural language for PostgreSQL
  *
- *	  $PostgreSQL: pgsql/src/pl/plperl/plperl.c,v 1.123 2006/11/21 16:59:02 adunstan Exp $
+ *	  $PostgreSQL: pgsql/src/pl/plperl/plperl.c,v 1.124 2007/01/27 01:55:57 adunstan Exp $
  *
  **********************************************************************/
 
@@ -2128,23 +2128,23 @@ plperl_spi_prepare(char *query, int argc, SV **argv)
 	PG_TRY();
 	{
 		/************************************************************
-		 * Lookup the argument types by name in the system cache
-		 * and remember the required information for input conversion
+		 * Resolve argument type names and then look them up by oid 
+         * in the system cache, and remember the required information 
+         * for input conversion.
 		 ************************************************************/
 		for (i = 0; i < argc; i++)
 		{
-			List	   *names;
-			HeapTuple	typeTup;
-
-			/* Parse possibly-qualified type name and look it up in pg_type */
-			names = stringToQualifiedNameList(SvPV(argv[i], PL_na),
-											  "plperl_spi_prepare");
-			typeTup = typenameType(NULL, makeTypeNameFromNameList(names));
-			qdesc->argtypes[i] = HeapTupleGetOid(typeTup);
-			perm_fmgr_info(((Form_pg_type) GETSTRUCT(typeTup))->typinput,
+			Oid         typId, typInput, typIOParam;
+            int32       typmod;
+
+			parseTypeString(SvPV(argv[i], PL_na), &typId, &typmod);
+
+			getTypeInputInfo(typId, &typInput, &typIOParam);
+
+			qdesc->argtypes[i] = typId;
+			perm_fmgr_info((Form_pg_type) typInput,
 						   &(qdesc->arginfuncs[i]));
-			qdesc->argtypioparams[i] = getTypeIOParam(typeTup);
-			ReleaseSysCache(typeTup);
+			qdesc->argtypioparams[i] = typIOParam;
 		}
 
 		/************************************************************

src/pl/plperl/sql/plperl.sql

@@ -316,7 +316,7 @@ SELECT array_of_text();
 -- Test spi_prepare/spi_exec_prepared/spi_freeplan
 --
 CREATE OR REPLACE FUNCTION perl_spi_prepared(INTEGER) RETURNS INTEGER AS $$
-   my $x = spi_prepare('select $1 AS a', 'INT4');
+   my $x = spi_prepare('select $1 AS a', 'INTEGER');
    my $q = spi_exec_prepared( $x, $_[0] + 1);
    spi_freeplan($x);
 return $q->{rows}->[0]->{a};
@@ -337,3 +337,33 @@ CREATE OR REPLACE FUNCTION perl_spi_prepared_set(INTEGER, INTEGER) RETURNS SETOF
 $$ LANGUAGE plperl;
 SELECT * from perl_spi_prepared_set(1,2);
 
+--
+-- Test prepare with a type with spaces
+--
+CREATE OR REPLACE FUNCTION perl_spi_prepared_double(double precision) RETURNS double precision AS $$
+  my $x = spi_prepare('SELECT 10.0 * $1 AS a', 'DOUBLE PRECISION');
+  my $q = spi_query_prepared($x,$_[0]);
+  my $result;
+  while (defined (my $y = spi_fetchrow($q))) {
+      $result = $y->{a};
+  }
+  spi_freeplan($x);
+  return $result;
+$$ LANGUAGE plperl;
+SELECT perl_spi_prepared_double(4.35) as "double precision";
+
+--
+-- Test with a bad type
+--
+CREATE OR REPLACE FUNCTION perl_spi_prepared_bad(double precision) RETURNS double precision AS $$
+  my $x = spi_prepare('SELECT 10.0 * $1 AS a', 'does_not_exist');
+  my $q = spi_query_prepared($x,$_[0]);
+  my $result;
+  while (defined (my $y = spi_fetchrow($q))) {
+      $result = $y->{a};
+  }
+  spi_freeplan($x);
+  return $result;
+$$ LANGUAGE plperl;
+SELECT perl_spi_prepared_bad(4.35) as "double precision";
+