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Allow extracting machine-readable object identity

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Introduce pg_identify_object(oid,oid,int4), which is similar in spirit
to pg_describe_object but instead produces a row of machine-readable
information to uniquely identify the given object, without resorting to
OIDs or other internal representation.  This is intended to be used in
the event trigger implementation, to report objects being operated on;
but it has usefulness of its own.

Catalog version bumped because of the new function.
This commit is contained in:
Alvaro Herrera
2013-03-20 18:19:19 -03:00
parent a7921f71a3
commit f8348ea32e
12 changed files with 2141 additions and 955 deletions
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65
src/backend/parser/gram.y
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@ -5195,20 +5195,25 @@ opt_restart_seqs:
* The COMMENT ON statement can take different forms based upon the type of
* the object associated with the comment. The form of the statement is:
*
* COMMENT ON [ [ DATABASE | DOMAIN | INDEX | SEQUENCE | TABLE | TYPE | VIEW |
* COLLATION | CONVERSION | LANGUAGE | OPERATOR CLASS |
* LARGE OBJECT | CAST | COLUMN | SCHEMA | TABLESPACE |
* EXTENSION | ROLE | TEXT SEARCH PARSER |
* TEXT SEARCH DICTIONARY | TEXT SEARCH TEMPLATE |
* TEXT SEARCH CONFIGURATION | FOREIGN TABLE |
* FOREIGN DATA WRAPPER | SERVER | EVENT TRIGGER |
* MATERIALIZED VIEW] <objname> |
* COMMENT ON [ [ CONVERSION | COLLATION | DATABASE | DOMAIN |
* EXTENSION | EVENT TRIGGER | FOREIGN DATA WRAPPER |
* FOREIGN TABLE | INDEX | [PROCEDURAL] LANGUAGE |
* MATERIALIZED VIEW | ROLE | SCHEMA | SEQUENCE |
* SERVER | TABLE | TABLESPACE |
* TEXT SEARCH CONFIGURATION | TEXT SEARCH DICTIONARY |
* TEXT SEARCH PARSER | TEXT SEARCH TEMPLATE | TYPE |
* VIEW] <objname> |
* AGGREGATE <aggname> (arg1, ...) |
* FUNCTION <funcname> (arg1, arg2, ...) |
* OPERATOR <op> (leftoperand_typ, rightoperand_typ) |
* TRIGGER <triggername> ON <relname> |
* CAST (<src type> AS <dst type>) |
* COLUMN <relname>.<colname> |
* CONSTRAINT <constraintname> ON <relname> |
* RULE <rulename> ON <relname> ]
* FUNCTION <funcname> (arg1, arg2, ...) |
* LARGE OBJECT <oid> |
* OPERATOR <op> (leftoperand_typ, rightoperand_typ) |
* OPERATOR CLASS <name> USING <access-method> |
* OPERATOR FAMILY <name> USING <access-method> |
* RULE <rulename> ON <relname> |
* TRIGGER <triggername> ON <relname> ]
* IS 'text'
*
*****************************************************************************/
@ -5332,38 +5337,6 @@ CommentStmt:
n->comment = $7;
$$ = (Node *) n;
}
| COMMENT ON TEXT_P SEARCH PARSER any_name IS comment_text
{
CommentStmt *n = makeNode(CommentStmt);
n->objtype = OBJECT_TSPARSER;
n->objname = $6;
n->comment = $8;
$$ = (Node *) n;
}
| COMMENT ON TEXT_P SEARCH DICTIONARY any_name IS comment_text
{
CommentStmt *n = makeNode(CommentStmt);
n->objtype = OBJECT_TSDICTIONARY;
n->objname = $6;
n->comment = $8;
$$ = (Node *) n;
}
| COMMENT ON TEXT_P SEARCH TEMPLATE any_name IS comment_text
{
CommentStmt *n = makeNode(CommentStmt);
n->objtype = OBJECT_TSTEMPLATE;
n->objname = $6;
n->comment = $8;
$$ = (Node *) n;
}
| COMMENT ON TEXT_P SEARCH CONFIGURATION any_name IS comment_text
{
CommentStmt *n = makeNode(CommentStmt);
n->objtype = OBJECT_TSCONFIGURATION;
n->objname = $6;
n->comment = $8;
$$ = (Node *) n;
}
;
comment_type:
@ -5386,6 +5359,10 @@ comment_type:
| SERVER { $$ = OBJECT_FOREIGN_SERVER; }
| FOREIGN DATA_P WRAPPER { $$ = OBJECT_FDW; }
| EVENT TRIGGER { $$ = OBJECT_EVENT_TRIGGER; }
| TEXT_P SEARCH CONFIGURATION { $$ = OBJECT_TSCONFIGURATION; }
| TEXT_P SEARCH DICTIONARY { $$ = OBJECT_TSDICTIONARY; }
| TEXT_P SEARCH PARSER { $$ = OBJECT_TSPARSER; }
| TEXT_P SEARCH TEMPLATE { $$ = OBJECT_TSTEMPLATE; }
;
comment_text: