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Allow schema-qualified operator names to be used in the optional

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arguments of CREATE OPERATOR.
This commit is contained in:
Tom Lane 2002-08-10 19:01:53 +00:00
parent f1d820494c
commit a5e6e99357
4 changed files with 55 additions and 56 deletions
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11
doc/src/sgml/ref/create_operator.sgml
View File

@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_operator.sgml,v 1.29 2002/05/18 15:44:47 petere Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/ref/create_operator.sgml,v 1.30 2002/08/10 19:01:53 tgl Exp $
PostgreSQL documentation
-->
@ -437,6 +437,15 @@ MYBOXES.description === box '((0,0), (1,1))'
Refer to <command>DROP OPERATOR</command> to delete
user-defined operators from a database.
</para>
<para>
To give a schema-qualified operator name in <replaceable
class="parameter">com_op</replaceable> or the other optional
arguments, use the <literal>OPERATOR()</> syntax, for example
<programlisting>
COMMUTATOR = OPERATOR(myschema.===) ,
</programlisting>
</para>
</refsect2>
</refsect1>

15
doc/src/sgml/syntax.sgml
View File

@ -1,5 +1,5 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/syntax.sgml,v 1.64 2002/08/05 19:43:31 petere Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/syntax.sgml,v 1.65 2002/08/10 19:01:53 tgl Exp $
-->
<chapter id="sql-syntax">
@ -755,7 +755,7 @@ SELECT (5 !) - 6;
</row>
<row>
<entry><token>LIKE</token> <token>ILIKE</token></entry>
<entry><token>LIKE</token> <token>ILIKE</token> <token>SIMILAR</token></entry>
<entry></entry>
<entry>string pattern matching</entry>
</row>
@ -801,6 +801,17 @@ SELECT (5 !) - 6;
the same precedence as the built-in <quote>+</quote> operator, no
matter what yours does.
</para>
<para>
When a schema-qualified operator name is used in the
<literal>OPERATOR</> syntax, as for example in
<programlisting>
SELECT 3 OPERATOR(pg_catalog.+) 4;
</programlisting>
the <literal>OPERATOR</> construct is taken to have the default precedence
shown above for <quote>any other</> operator. This is true no matter
which specific operator name appears inside <literal>OPERATOR()</>.
</para>
</sect2>
</sect1>

17
src/backend/commands/define.c
View File

@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/define.c,v 1.78 2002/06/20 20:29:27 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/define.c,v 1.79 2002/08/10 19:01:53 tgl Exp $
*
* DESCRIPTION
* The "DefineFoo" routines take the parse tree and pick out the
@ -35,6 +35,7 @@
#include <ctype.h>
#include <math.h>
#include "catalog/namespace.h"
#include "commands/defrem.h"
#include "parser/parse_type.h"
#include "utils/int8.h"
@ -86,6 +87,8 @@ defGetString(DefElem *def)
return strVal(def->arg);
case T_TypeName:
return TypeNameToString((TypeName *) def->arg);
case T_List:
return NameListToString((List *) def->arg);
default:
elog(ERROR, "Define: cannot interpret argument of \"%s\"",
def->defname);
@ -156,6 +159,8 @@ defGetQualifiedName(DefElem *def)
{
case T_TypeName:
return ((TypeName *) def->arg)->names;
case T_List:
return (List *) def->arg;
case T_String:
/* Allow quoted name for backwards compatibility */
return makeList1(def->arg);
@ -168,6 +173,9 @@ defGetQualifiedName(DefElem *def)
/*
* Extract a TypeName from a DefElem.
*
* Note: we do not accept a List arg here, because the parser will only
* return a bare List when the name looks like an operator name.
*/
TypeName *
defGetTypeName(DefElem *def)
@ -223,11 +231,14 @@ defGetTypeLength(DefElem *def)
"variable") == 0)
return -1; /* variable length */
break;
case T_List:
/* must be an operator name */
break;
default:
elog(ERROR, "Define: cannot interpret argument of \"%s\"",
def->defname);
}
elog(ERROR, "Define: invalid argument for \"%s\"",
def->defname);
elog(ERROR, "Define: invalid argument for \"%s\": \"%s\"",
def->defname, defGetString(def));
return 0; /* keep compiler quiet */
}

68
src/backend/parser/gram.y
View File

@ -11,7 +11,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.357 2002/08/06 05:40:45 ishii Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 2.358 2002/08/10 19:01:53 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -1307,27 +1307,19 @@ copy_opt_list:
copy_opt_item:
BINARY
{
$$ = makeNode(DefElem);
$$->defname = "binary";
$$->arg = (Node *)makeInteger(TRUE);
$$ = makeDefElem("binary", (Node *)makeInteger(TRUE));
}
| OIDS
{
$$ = makeNode(DefElem);
$$->defname = "oids";
$$->arg = (Node *)makeInteger(TRUE);
$$ = makeDefElem("oids", (Node *)makeInteger(TRUE));
}
| DELIMITER opt_as Sconst
{
$$ = makeNode(DefElem);
$$->defname = "delimiter";
$$->arg = (Node *)makeString($3);
$$ = makeDefElem("delimiter", (Node *)makeString($3));
}
| NULL_P opt_as Sconst
{
$$ = makeNode(DefElem);
$$->defname = "null";
$$->arg = (Node *)makeString($3);
$$ = makeDefElem("null", (Node *)makeString($3));
}
;
@ -1336,9 +1328,7 @@ copy_opt_item:
opt_binary:
BINARY
{
$$ = makeNode(DefElem);
$$->defname = "binary";
$$->arg = (Node *)makeInteger(TRUE);
$$ = makeDefElem("binary", (Node *)makeInteger(TRUE));
}
| /*EMPTY*/ { $$ = NULL; }
;
@ -1346,9 +1336,7 @@ opt_binary:
opt_oids:
WITH OIDS
{
$$ = makeNode(DefElem);
$$->defname = "oids";
$$->arg = (Node *)makeInteger(TRUE);
$$ = makeDefElem("oids", (Node *)makeInteger(TRUE));
}
| /*EMPTY*/ { $$ = NULL; }
;
@ -1357,9 +1345,7 @@ copy_delimiter:
/* USING DELIMITERS kept for backward compatibility. 2002-06-15 */
opt_using DELIMITERS Sconst
{
$$ = makeNode(DefElem);
$$->defname = "delimiter";
$$->arg = (Node *)makeString($3);
$$ = makeDefElem("delimiter", (Node *)makeString($3));
}
| /*EMPTY*/ { $$ = NULL; }
;
@ -2276,7 +2262,7 @@ def_elem: ColLabel '=' def_arg
/* Note: any simple identifier will be returned as a type name! */
def_arg: func_return { $$ = (Node *)$1; }
| all_Op { $$ = (Node *)makeString($1); }
| qual_all_Op { $$ = (Node *)$1; }
| NumericOnly { $$ = (Node *)$1; }
| Sconst { $$ = (Node *)makeString($1); }
;
@ -3568,27 +3554,19 @@ createdb_opt_list:
createdb_opt_item:
LOCATION opt_equal Sconst
{
$$ = makeNode(DefElem);
$$->defname = "location";
$$->arg = (Node *)makeString($3);
$$ = makeDefElem("location", (Node *)makeString($3));
}
| LOCATION opt_equal DEFAULT
{
$$ = makeNode(DefElem);
$$->defname = "location";
$$->arg = NULL;
$$ = makeDefElem("location", NULL);
}
| TEMPLATE opt_equal name
{
$$ = makeNode(DefElem);
$$->defname = "template";
$$->arg = (Node *)makeString($3);
$$ = makeDefElem("template", (Node *)makeString($3));
}
| TEMPLATE opt_equal DEFAULT
{
$$ = makeNode(DefElem);
$$->defname = "template";
$$->arg = NULL;
$$ = makeDefElem("template", NULL);
}
| ENCODING opt_equal Sconst
{
@ -3598,9 +3576,7 @@ createdb_opt_item:
elog(ERROR, "%s is not a valid encoding name", $3);
encoding = pg_char_to_encoding($3);
$$ = makeNode(DefElem);
$$->defname = "encoding";
$$->arg = (Node *)makeInteger(encoding);
$$ = makeDefElem("encoding", (Node *)makeInteger(encoding));
}
| ENCODING opt_equal Iconst
{
@ -3610,27 +3586,19 @@ createdb_opt_item:
if (!strcmp(encoding_name,"") ||
pg_valid_server_encoding(encoding_name) < 0)
elog(ERROR, "%d is not a valid encoding code", $3);
$$ = makeNode(DefElem);
$$->defname = "encoding";
$$->arg = (Node *)makeInteger($3);
$$ = makeDefElem("encoding", (Node *)makeInteger($3));
}
| ENCODING opt_equal DEFAULT
{
$$ = makeNode(DefElem);
$$->defname = "encoding";
$$->arg = (Node *)makeInteger(-1);
$$ = makeDefElem("encoding", (Node *)makeInteger(-1));
}
| OWNER opt_equal name
{
$$ = makeNode(DefElem);
$$->defname = "owner";
$$->arg = (Node *)makeString($3);
$$ = makeDefElem("owner", (Node *)makeString($3));
}
| OWNER opt_equal DEFAULT
{
$$ = makeNode(DefElem);
$$->defname = "owner";
$$->arg = NULL;
$$ = makeDefElem("owner", NULL);
}
;