*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/access/common/tupdesc.c,v 1.78 2002/03/29 19:05:59 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/access/common/tupdesc.c,v 1.79 2002/06/20 17:19:08 momjian Exp $
*
* NOTES
* some of the executor utility code such as "ExecTypeFromTL" should be
#include "postgres.h"
+#include "funcapi.h"
+#include "access/heapam.h"
+#include "catalog/namespace.h"
#include "catalog/pg_type.h"
#include "nodes/parsenodes.h"
#include "parser/parse_type.h"
}
return desc;
}
+
+
+/*
+ * RelationNameGetTupleDesc
+ *
+ * Given a (possibly qualified) relation name, build a TupleDesc.
+ */
+TupleDesc
+RelationNameGetTupleDesc(char *relname)
+{
+ RangeVar *relvar;
+ Relation rel;
+ TupleDesc tupdesc;
+ List *relname_list;
+
+ /* Open relation and get the tuple description */
+ relname_list = stringToQualifiedNameList(relname, "RelationNameGetTupleDesc");
+ relvar = makeRangeVarFromNameList(relname_list);
+ rel = heap_openrv(relvar, AccessShareLock);
+ tupdesc = CreateTupleDescCopy(RelationGetDescr(rel));
+ relation_close(rel, AccessShareLock);
+
+ return tupdesc;
+}
+
+/*
+ * TypeGetTupleDesc
+ *
+ * Given a type Oid, build a TupleDesc.
+ *
+ * If the type is composite, *and* a colaliases List is provided, *and*
+ * the List is of natts length, use the aliases instead of the relation
+ * attnames.
+ *
+ * If the type is a base type, a single item alias List is required.
+ */
+TupleDesc
+TypeGetTupleDesc(Oid typeoid, List *colaliases)
+{
+ Oid relid = typeidTypeRelid(typeoid);
+ TupleDesc tupdesc;
+
+ /*
+ * Build a suitable tupledesc representing the output rows
+ */
+ if (OidIsValid(relid))
+ {
+ /* Composite data type, i.e. a table's row type */
+ Relation rel;
+ int natts;
+
+ rel = relation_open(relid, AccessShareLock);
+ tupdesc = CreateTupleDescCopy(RelationGetDescr(rel));
+ natts = tupdesc->natts;
+ relation_close(rel, AccessShareLock);
+
+ /* check to see if we've given column aliases */
+ if(colaliases != NIL)
+ {
+ char *label;
+ int varattno;
+
+ /* does the List length match the number of attributes */
+ if (length(colaliases) != natts)
+ elog(ERROR, "TypeGetTupleDesc: number of aliases does not match number of attributes");
+
+ /* OK, use the aliases instead */
+ for (varattno = 0; varattno < natts; varattno++)
+ {
+ label = strVal(nth(varattno, colaliases));
+
+ if (label != NULL)
+ namestrcpy(&(tupdesc->attrs[varattno]->attname), label);
+ else
+ MemSet(NameStr(tupdesc->attrs[varattno]->attname), 0, NAMEDATALEN);
+ }
+ }
+ }
+ else
+ {
+ /* Must be a base data type, i.e. scalar */
+ char *attname;
+
+ /* the alias List is required for base types */
+ if (colaliases == NIL)
+ elog(ERROR, "TypeGetTupleDesc: no column alias was provided");
+
+ /* the alias List length must be 1 */
+ if (length(colaliases) != 1)
+ elog(ERROR, "TypeGetTupleDesc: number of aliases does not match number of attributes");
+
+ /* OK, get the column alias */
+ attname = strVal(lfirst(colaliases));
+
+ tupdesc = CreateTemplateTupleDesc(1);
+ TupleDescInitEntry(tupdesc,
+ (AttrNumber) 1,
+ attname,
+ typeoid,
+ -1,
+ 0,
+ false);
+ }
+
+ return tupdesc;
+}
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/executor/execTuples.c,v 1.51 2002/03/21 06:21:04 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/executor/execTuples.c,v 1.52 2002/06/20 17:19:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
*/
#include "postgres.h"
+#include "funcapi.h"
#include "access/heapam.h"
#include "catalog/pg_type.h"
#include "executor/executor.h"
-
/* ----------------------------------------------------------------
* tuple table create/delete functions
* ----------------------------------------------------------------
return typeInfo;
}
+
+/*
+ * TupleDescGetSlot - Initialize a slot based on the supplied
+ * tupledesc
+ */
+TupleTableSlot *
+TupleDescGetSlot(TupleDesc tupdesc)
+{
+ TupleTableSlot *slot;
+
+ /* Make a standalone slot */
+ slot = MakeTupleTableSlot();
+
+ /* Bind the tuple description to the slot */
+ ExecSetSlotDescriptor(slot, tupdesc, true);
+
+ /* Return the slot */
+ return slot;
+}
+
+/*
+ * TupleDescGetAttInMetadata - Get a pointer to AttInMetadata based on the
+ * supplied TupleDesc. AttInMetadata can be used in conjunction with C strings
+ * to produce a properly formed tuple.
+ */
+AttInMetadata *
+TupleDescGetAttInMetadata(TupleDesc tupdesc)
+{
+ int natts;
+ int i;
+ Oid atttypeid;
+ Oid attinfuncid;
+ Oid attelem;
+ FmgrInfo *attinfuncinfo;
+ Oid *attelems;
+ int4 *atttypmods;
+ AttInMetadata *attinmeta;
+
+ attinmeta = (AttInMetadata *) palloc(sizeof(AttInMetadata));
+ natts = tupdesc->natts;
+
+ /*
+ * Gather info needed later to call the "in" function for each attribute
+ */
+ attinfuncinfo = (FmgrInfo *) palloc(natts * sizeof(FmgrInfo));
+ attelems = (Oid *) palloc(natts * sizeof(Oid));
+ atttypmods = (int4 *) palloc(natts * sizeof(int4));
+
+ for (i = 0; i < natts; i++)
+ {
+ atttypeid = tupdesc->attrs[i]->atttypid;
+ get_type_metadata(atttypeid, &attinfuncid, &attelem);
+
+ fmgr_info(attinfuncid, &attinfuncinfo[i]);
+ attelems[i] = attelem;
+ atttypmods[i] = tupdesc->attrs[i]->atttypmod;
+ }
+ attinmeta->tupdesc = tupdesc;
+ attinmeta->attinfuncs = attinfuncinfo;
+ attinmeta->attelems = attelems;
+ attinmeta->atttypmods = atttypmods;
+
+ return attinmeta;
+}
+
+/*
+ * BuildTupleFromCStrings - build a HeapTuple given user data in C string form.
+ * values is an array of C strings, one for each attribute of the return tuple.
+ */
+HeapTuple
+BuildTupleFromCStrings(AttInMetadata *attinmeta, char **values)
+{
+ TupleDesc tupdesc;
+ int natts;
+ HeapTuple tuple;
+ char *nulls;
+ int i;
+ Datum *dvalues;
+ FmgrInfo attinfuncinfo;
+ Oid attelem;
+ int4 atttypmod;
+
+ tupdesc = attinmeta->tupdesc;
+ natts = tupdesc->natts;
+
+ dvalues = (Datum *) palloc(natts * sizeof(Datum));
+
+ /* Call the "in" function for each attribute */
+ for (i = 0; i < natts; i++)
+ {
+ if (values[i] != NULL)
+ {
+ attinfuncinfo = attinmeta->attinfuncs[i];
+ attelem = attinmeta->attelems[i];
+ atttypmod = attinmeta->atttypmods[i];
+
+ dvalues[i] = FunctionCall3(&attinfuncinfo, CStringGetDatum(values[i]),
+ ObjectIdGetDatum(attelem),
+ Int32GetDatum(atttypmod));
+ }
+ else
+ dvalues[i] = PointerGetDatum(NULL);
+ }
+
+ /*
+ * Form a tuple
+ */
+ nulls = (char *) palloc(natts * sizeof(char));
+ for (i = 0; i < natts; i++)
+ {
+ if (DatumGetPointer(dvalues[i]) != NULL)
+ nulls[i] = ' ';
+ else
+ nulls[i] = 'n';
+ }
+ tuple = heap_formtuple(tupdesc, dvalues, nulls);
+
+ return tuple;
+}
+
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/utils/adt/regproc.c,v 1.68 2002/05/11 00:24:16 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/regproc.c,v 1.69 2002/06/20 17:19:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "utils/lsyscache.h"
#include "utils/syscache.h"
-
-static List *stringToQualifiedNameList(const char *string, const char *caller);
static void parseNameAndArgTypes(const char *string, const char *caller,
const char *type0_spelling,
List **names, int *nargs, Oid *argtypes);
}
-/*****************************************************************************
- * SUPPORT ROUTINES *
- *****************************************************************************/
-
/*
* Given a C string, parse it into a qualified-name list.
*/
-static List *
+List *
stringToQualifiedNameList(const char *string, const char *caller)
{
char *rawname;
return result;
}
+/*****************************************************************************
+ * SUPPORT ROUTINES *
+ *****************************************************************************/
+
/*
* Given a C string, parse it into a qualified function or operator name
* followed by a parenthesized list of type names. Reduce the
# Makefile for utils/fmgr
#
# IDENTIFICATION
-# $Header: /cvsroot/pgsql/src/backend/utils/fmgr/Makefile,v 1.12 2001/09/16 16:11:11 petere Exp $
+# $Header: /cvsroot/pgsql/src/backend/utils/fmgr/Makefile,v 1.13 2002/06/20 17:19:08 momjian Exp $
#
#-------------------------------------------------------------------------
top_builddir = ../../../..
include $(top_builddir)/src/Makefile.global
-OBJS = dfmgr.o fmgr.o
+OBJS = dfmgr.o fmgr.o funcapi.o
override CPPFLAGS += -DPKGLIBDIR=\"$(pkglibdir)\" -DDLSUFFIX=\"$(DLSUFFIX)\"
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $Id: builtins.h,v 1.184 2002/06/13 03:40:49 tgl Exp $
+ * $Id: builtins.h,v 1.185 2002/06/20 17:19:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
extern Datum regclassout(PG_FUNCTION_ARGS);
extern Datum regtypein(PG_FUNCTION_ARGS);
extern Datum regtypeout(PG_FUNCTION_ARGS);
+extern List *stringToQualifiedNameList(const char *string, const char *caller);
/* ruleutils.c */
extern Datum pg_get_ruledef(PG_FUNCTION_ARGS);
projects / postgresql / commitdiff