Re: Function to split pg_trigger.tgargs

http://www.zort.ca/postgresql/postgresql_autodoc_0.50.tar.gz

The below is taken from the above.

my $args = $forcols->{'args'};
my $nargs = $forcols->{'number_args'};

if ($nargs == 6) {
my ( $keyname
, $table
, $ftable
, $unspecified
, $lcolumn_name
, $fcolumn_name
) = split(/\000/, $args);

$structure{$group}{$table_name}{'COLUMN'}{$lcolumn_name}{'FK'} =
"$ftable"; #.$fcolumn_name";

# print " FK $lcolumn_name -> $ftable.$fcolumn_name\n";
} elsif (($nargs - 6) % 2 == 0) {
my ( $keyname
, $table
, $ftable
, $unspecified
, $lcolumn_name
, $fcolumn_name
, @junk
) = split(/\000/, $args);

my $key_cols = "$lcolumn_name";
my $ref_cols = "$fcolumn_name";

while ($lcolumn_name = pop(@junk) and $fcolumn_name =
pop(@junk)) {

$key_cols .= ", $lcolumn_name";
$ref_cols .= ", $fcolumn_name";
}

$structure{$group}{$table_name}{'CONSTRAINT'}{$constraint_name}
= "FOREIGN KEY ($key_cols) REFERENCES $ftable($ref_cols)";
}
--
Rod Taylor

This message represents the official view of the voices in my head

----- Original Message -----
From: "Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au>
To: "Hackers" <pgsql-hackers(at)postgresql(dot)org>;
<pgsql-sql(at)postgresql(dot)org>
Sent: Monday, February 18, 2002 12:35 AM
Subject: [HACKERS] Function to split pg_trigger.tgargs

> Hi All,
>
> Is there a function in the catalogs somewhere that will split this?:
>
> australia=# select tgargs from pg_trigger where oid=3842228;
> tgargs
>
> --------------------------------------------------------------------
--------
> ------
> --------------
>
>
<unnamed>\000users_mealplans_prefs\000medidiets_meals\000UNSPECIFIED\0
00meal
> _id\0
> 00meal_id\000
> (1 row)
>
> I'm hoping to do the splitting within pl/pgsql even. If there is no
> function to break it up, can someone please suggest how I would code
taking
> this string and breaking it into components.
>
> Chris
>
>
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