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Postgres FD Implementation
Commit 7b8eb0b4 authored by Bruce Momjian's avatar Bruce Momjian
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Attached is a fairly sizeable update to contrib/dblink. I'd love to get 

review/feedback if anyone is interested and can spend the time. But I'd
also love to get this committed and address changes as incremental
patches ;-), so if there are no objections, please apply.

Below I'll give a synopsis of the changes. More detailed descriptions
are now in a new doc directory under contrib/dblink. There is also a new

dblink.test.sql file which will give a pretty good overview of the
functions and their use.

Joe Conway
parent a12b4e27
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Showing with 957 additions and 709 deletions
contrib/README
View file @ 7b8eb0b4
......@@ -48,7 +48,7 @@ dbase -
dblink -
Allows remote query execution
by Joe Conway <joe.conway@mail.com>
by Joe Conway <mail@joeconway.com>
dbmirror -
Replication server
......@@ -73,7 +73,7 @@ fulltextindex -
fuzzystrmatch -
Levenshtein, metaphone, and soundex fuzzy string matching
by Joe Conway <joseph.conway@home.com>, Joel Burton <jburton@scw.org>
by Joe Conway <mail@joeconway.com>, Joel Burton <jburton@scw.org>
intagg -
Integer aggregator
......
contrib/dblink/README.dblink
View file @ 7b8eb0b4
This diff is collapsed.
contrib/dblink/dblink.c
View file @ 7b8eb0b4
This diff is collapsed.
contrib/dblink/dblink.h
View file @ 7b8eb0b4
......@@ -3,7 +3,9 @@
*
* Functions returning results from a remote database
*
* Copyright (c) Joseph Conway <mail@joeconway.com>, 2001, 2002,
* Joe Conway <mail@joeconway.com>
*
* Copyright (c) 2001, 2002 by PostgreSQL Global Development Group
* ALL RIGHTS RESERVED;
*
* Permission to use, copy, modify, and distribute this software and its
......@@ -28,38 +30,6 @@
#ifndef DBLINK_H
#define DBLINK_H
#include <string.h>
#include "postgres.h"
#include "libpq-fe.h"
#include "libpq-int.h"
#include "fmgr.h"
#include "access/tupdesc.h"
#include "access/heapam.h"
#include "catalog/catname.h"
#include "catalog/pg_index.h"
#include "catalog/pg_type.h"
#include "executor/executor.h"
#include "executor/spi.h"
#include "lib/stringinfo.h"
#include "nodes/nodes.h"
#include "nodes/execnodes.h"
#include "nodes/pg_list.h"
#include "parser/parse_type.h"
#include "tcop/tcopprot.h"
#include "utils/builtins.h"
#include "utils/fmgroids.h"
#include "utils/array.h"
#include "utils/syscache.h"
#ifdef NamespaceRelationName
#include "catalog/namespace.h"
#endif /* NamespaceRelationName */
/*
* Max SQL statement size
*/
#define DBLINK_MAX_SQLSTATE_SIZE 16384
/*
* This struct holds the results of the remote query.
* Use fn_extra to hold a pointer to it across calls
......@@ -82,43 +52,27 @@ typedef struct
PGresult *res;
} dblink_results;
/*
* This struct holds results in the form of an array.
* Use fn_extra to hold a pointer to it across calls
*/
typedef struct
{
/*
* elem being accessed
*/
int elem_num;
/*
* number of elems
*/
int num_elems;
/*
* the actual array
*/
void *res;
} dblink_array_results;
/*
* External declarations
*/
/* deprecated */
extern Datum dblink(PG_FUNCTION_ARGS);
extern Datum dblink_tok(PG_FUNCTION_ARGS);
extern Datum dblink_strtok(PG_FUNCTION_ARGS);
/* supported */
extern Datum dblink_connect(PG_FUNCTION_ARGS);
extern Datum dblink_disconnect(PG_FUNCTION_ARGS);
extern Datum dblink_open(PG_FUNCTION_ARGS);
extern Datum dblink_close(PG_FUNCTION_ARGS);
extern Datum dblink_fetch(PG_FUNCTION_ARGS);
extern Datum dblink_record(PG_FUNCTION_ARGS);
extern Datum dblink_exec(PG_FUNCTION_ARGS);
extern Datum dblink_get_pkey(PG_FUNCTION_ARGS);
extern Datum dblink_last_oid(PG_FUNCTION_ARGS);
extern Datum dblink_build_sql_insert(PG_FUNCTION_ARGS);
extern Datum dblink_build_sql_delete(PG_FUNCTION_ARGS);
extern Datum dblink_build_sql_update(PG_FUNCTION_ARGS);
extern Datum dblink_current_query(PG_FUNCTION_ARGS);
extern Datum dblink_replace_text(PG_FUNCTION_ARGS);
extern char *debug_query_string;
......
contrib/dblink/dblink.sql.in
View file @ 7b8eb0b4
CREATE OR REPLACE FUNCTION dblink (text,text) RETURNS setof int
AS 'MODULE_PATHNAME','dblink' LANGUAGE 'c'
-- Uncomment the following 9 lines to use original DEPRECATED functions
--CREATE OR REPLACE FUNCTION dblink (text,text) RETURNS setof int
-- AS 'MODULE_PATHNAME','dblink' LANGUAGE 'c'
-- WITH (isstrict);
--CREATE OR REPLACE FUNCTION dblink_tok (int,int) RETURNS text
-- AS 'MODULE_PATHNAME','dblink_tok' LANGUAGE 'c'
-- WITH (isstrict);
--CREATE OR REPLACE FUNCTION dblink_last_oid (int) RETURNS oid
-- AS 'MODULE_PATHNAME','dblink_last_oid' LANGUAGE 'c'
-- WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_connect (text) RETURNS text
AS 'MODULE_PATHNAME','dblink_connect' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_tok (int,int) RETURNS text
AS 'MODULE_PATHNAME','dblink_tok' LANGUAGE 'c'
CREATE OR REPLACE FUNCTION dblink_disconnect () RETURNS text
AS 'MODULE_PATHNAME','dblink_disconnect' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_strtok (text,text,int) RETURNS text
AS 'MODULE_PATHNAME','dblink_strtok' LANGUAGE 'c'
WITH (iscachable, isstrict);
CREATE OR REPLACE FUNCTION dblink_open (text,text) RETURNS text
AS 'MODULE_PATHNAME','dblink_open' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_get_pkey (text) RETURNS setof text
AS 'MODULE_PATHNAME','dblink_get_pkey' LANGUAGE 'c'
CREATE OR REPLACE FUNCTION dblink_fetch (text,int) RETURNS setof record
AS 'MODULE_PATHNAME','dblink_fetch' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_close (text) RETURNS text
AS 'MODULE_PATHNAME','dblink_close' LANGUAGE 'c'
WITH (isstrict);
-- Note: if this is a first time install of dblink, the following DROP
-- FUNCTION line is expected to fail.
-- Comment out the following 4 lines if the DEPRECATED functions are used.
DROP FUNCTION dblink (text,text);
CREATE OR REPLACE FUNCTION dblink (text,text) RETURNS setof record
AS 'MODULE_PATHNAME','dblink_record' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink (text) RETURNS setof record
AS 'MODULE_PATHNAME','dblink_record' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_exec (text,text) RETURNS text
AS 'MODULE_PATHNAME','dblink_exec' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_exec (text) RETURNS text
AS 'MODULE_PATHNAME','dblink_exec' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_last_oid (int) RETURNS oid
AS 'MODULE_PATHNAME','dblink_last_oid' LANGUAGE 'c'
CREATE TYPE dblink_pkey_results AS (position int4, colname text);
CREATE OR REPLACE FUNCTION dblink_get_pkey (text) RETURNS setof dblink_pkey_results
AS 'MODULE_PATHNAME','dblink_get_pkey' LANGUAGE 'c'
WITH (isstrict);
CREATE OR REPLACE FUNCTION dblink_build_sql_insert (text, int2vector, int2, _text, _text) RETURNS text
......@@ -32,7 +69,3 @@ CREATE OR REPLACE FUNCTION dblink_build_sql_update (text, int2vector, int2, _tex
CREATE OR REPLACE FUNCTION dblink_current_query () RETURNS text
AS 'MODULE_PATHNAME','dblink_current_query' LANGUAGE 'c';
CREATE OR REPLACE FUNCTION dblink_replace (text,text,text) RETURNS text
AS 'MODULE_PATHNAME','dblink_replace_text' LANGUAGE 'c'
WITH (iscachable, isstrict);
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