package DBIx::DBSchema::DBD::Pg;
+use base qw(DBIx::DBSchema::DBD);
use strict;
-use vars qw($VERSION @ISA %typemap);
use DBD::Pg 1.32;
+
+our $VERSION = '0.19';
+
die "DBD::Pg version 1.32 or 1.41 (or later) required--".
"this is only version $DBD::Pg::VERSION\n"
if $DBD::Pg::VERSION != 1.32 && $DBD::Pg::VERSION < 1.41;
-use DBIx::DBSchema::DBD;
-
-$VERSION = '0.10';
-@ISA = qw(DBIx::DBSchema::DBD);
-%typemap = (
- 'BLOB' => 'BYTEA',
+our %typemap = (
+ 'BLOB' => 'BYTEA',
'LONG VARBINARY' => 'BYTEA',
+ 'TIMESTAMP' => 'TIMESTAMP WITH TIME ZONE',
);
=head1 NAME
map {
+ my $type = $_->{'typname'};
+ $type = 'char' if $type eq 'bpchar';
+
+ my $len = '';
+ if ( $_->{attlen} == -1 && $_->{atttypmod} != -1
+ && $_->{typname} ne 'text' ) {
+ $len = $_->{atttypmod} - 4;
+ if ( $_->{typname} eq 'numeric' ) {
+ $len = ($len >> 16). ','. ($len & 0xffff);
+ }
+ }
+
my $default = '';
if ( $_->{atthasdef} ) {
my $attnum = $_->{attnum};
$d_sth->execute or die $d_sth->errstr;
$default = $d_sth->fetchrow_arrayref->[0];
- };
- my $len = '';
- if ( $_->{attlen} == -1 && $_->{atttypmod} != -1
- && $_->{typname} ne 'text' ) {
- $len = $_->{atttypmod} - 4;
- if ( $_->{typname} eq 'numeric' ) {
- $len = ($len >> 16). ','. ($len & 0xffff);
+ if ( _type_needs_quoting($type) ) {
+ $default =~ s/::([\w ]+)$//; #save typecast info?
+ if ( $default =~ /^'(.*)'$/ ) {
+ $default = $1;
+ $default = \"''" if $default eq '';
+ } else {
+ my $value = $default;
+ $default = \$value;
+ }
+ } elsif ( $default =~ /^[a-z]/i ) { #sloppy, but it'll do
+ my $value = $default;
+ $default = \$value;
}
- }
- my $type = $_->{'typname'};
- $type = 'char' if $type eq 'bpchar';
+ }
[
$_->{'attname'},
FROM pg_class c, pg_attribute a, pg_type t
WHERE c.relname = '$index'
AND a.attnum > 0 AND a.attrelid = c.oid AND a.atttypid = t.oid
+ ORDER BY a.attnum
END
$sth->execute or die $sth->errstr;
map { $_->{'attname'} } @{ $sth->fetchall_arrayref({}) };
$row->{'indisunique'};
}
+#using this
+#******** QUERY **********
+#SELECT conname,
+# pg_catalog.pg_get_constraintdef(r.oid, true) as condef
+#FROM pg_catalog.pg_constraint r
+#WHERE r.conrelid = '16457' AND r.contype = 'f' ORDER BY 1;
+#**************************
+
+# what's this do?
+#********* QUERY **********
+#SELECT conname, conrelid::pg_catalog.regclass,
+# pg_catalog.pg_get_constraintdef(c.oid, true) as condef
+#FROM pg_catalog.pg_constraint c
+#WHERE c.confrelid = '16457' AND c.contype = 'f' ORDER BY 1;
+#**************************
+
+sub constraints {
+ my($proto, $dbh, $table) = @_;
+ my $sth = $dbh->prepare(<<END) or die $dbh->errstr;
+ SELECT conname, pg_catalog.pg_get_constraintdef(r.oid, true) as condef
+ FROM pg_catalog.pg_constraint r
+ WHERE r.conrelid = ( SELECT oid FROM pg_class
+ WHERE relname = '$table'
+ AND pg_catalog.pg_table_is_visible(oid)
+ )
+ AND r.contype = 'f'
+END
+ $sth->execute;
+
+ map { $_->{condef}
+ =~ /^FOREIGN KEY \(([\w\, ]+)\) REFERENCES (\w+)\(([\w\, ]+)\)\s*(.*)$/
+ or die "unparsable constraint: ". $_->{condef};
+ my($columns, $table, $references, $etc ) = ($1, $2, $3, $4);
+ +{ 'constraint' => $_->{conname},
+ 'columns' => [ split(/,\s*/, $columns) ],
+ 'table' => $table,
+ 'references' => [ split(/,\s*/, $references) ],
+ #XXX $etc not handled yet for MATCH, ON DELETE, ON UPDATE
+ };
+ }
+ grep $_->{condef} =~ /^\s*FOREIGN\s+KEY/,
+ @{ $sth->fetchall_arrayref( {} ) };
+}
+
+sub add_column_callback {
+ my( $proto, $dbh, $table, $column_obj ) = @_;
+ my $name = $column_obj->name;
+
+ my $pg_server_version = $dbh->{'pg_server_version'};
+ my $warning = '';
+ unless ( $pg_server_version =~ /\d/ ) {
+ $warning = "WARNING: no pg_server_version! Assuming >= 7.3\n";
+ $pg_server_version = 70300;
+ }
+
+ my $hashref = { 'sql_after' => [], };
+
+ if ( $column_obj->type =~ /^(\w*)SERIAL$/i ) {
+
+ $hashref->{'effective_type'} = uc($1).'INT';
+
+ #needs more work for old Pg?
+
+ my $nextval;
+ warn $warning if $warning;
+ if ( $pg_server_version >= 70300 ) {
+ my $db_schema = default_db_schema();
+ $nextval = "nextval('$db_schema.${table}_${name}_seq'::text)";
+ } else {
+ $nextval = "nextval('${table}_${name}_seq'::text)";
+ }
+
+ push @{ $hashref->{'sql_after'} },
+ "ALTER TABLE $table ALTER COLUMN $name SET DEFAULT $nextval",
+ "CREATE SEQUENCE ${table}_${name}_seq",
+ "UPDATE $table SET $name = $nextval WHERE $name IS NULL",
+ ;
+
+ }
+
+ if ( ! $column_obj->null ) {
+ $hashref->{'effective_null'} = 'NULL';
+
+ warn $warning if $warning;
+ if ( $pg_server_version >= 70300 ) {
+
+ push @{ $hashref->{'sql_after'} },
+ "ALTER TABLE $table ALTER $name SET NOT NULL";
+
+ } else {
+
+ push @{ $hashref->{'sql_after'} },
+ "UPDATE pg_attribute SET attnotnull = TRUE ".
+ " WHERE attname = '$name' ".
+ " AND attrelid = ( SELECT oid FROM pg_class WHERE relname = '$table' )";
+
+ }
+
+ }
+
+ $hashref;
+
+}
+
+sub alter_column_callback {
+ my( $proto, $dbh, $table, $old_column, $new_column ) = @_;
+ my $name = $old_column->name;
+
+ my %canonical = (
+ 'SMALLINT' => 'INT2',
+ 'INT' => 'INT4',
+ 'BIGINT' => 'INT8',
+ 'SERIAL' => 'INT4',
+ 'BIGSERIAL' => 'INT8',
+ 'DECIMAL' => 'NUMERIC',
+ 'REAL' => 'FLOAT4',
+ 'DOUBLE PRECISION' => 'FLOAT8',
+ 'BLOB' => 'BYTEA',
+ 'TIMESTAMP' => 'TIMESTAMPTZ',
+ );
+ foreach ($old_column, $new_column) {
+ $_->type($canonical{uc($_->type)}) if $canonical{uc($_->type)};
+ }
+
+ my $pg_server_version = $dbh->{'pg_server_version'};
+ my $warning = '';
+ unless ( $pg_server_version =~ /\d/ ) {
+ $warning = "WARNING: no pg_server_version! Assuming >= 7.3\n";
+ $pg_server_version = 70300;
+ }
+
+ my $hashref = {};
+
+ #change type
+ if ( ( $canonical{uc($old_column->type)} || uc($old_column->type) )
+ ne ( $canonical{uc($new_column->type)} || uc($new_column->type) )
+ || $old_column->length ne $new_column->length
+ )
+ {
+
+ warn $warning if $warning;
+ if ( $pg_server_version >= 80000 ) {
+
+ $hashref->{'sql_alter_type'} =
+ "ALTER COLUMN ". $new_column->name.
+ " TYPE ". $new_column->type.
+ ( ( defined($new_column->length) && $new_column->length )
+ ? '('.$new_column->length.')'
+ : ''
+ )
+
+ } else {
+ warn "WARNING: can't yet change column types for Pg < version 8\n";
+ }
+
+ }
+
+ # change nullability from NOT NULL to NULL
+ if ( ! $old_column->null && $new_column->null ) {
+
+ warn $warning if $warning;
+ if ( $pg_server_version < 70300 ) {
+ $hashref->{'sql_alter_null'} =
+ "UPDATE pg_attribute SET attnotnull = FALSE
+ WHERE attname = '$name'
+ AND attrelid = ( SELECT oid FROM pg_class
+ WHERE relname = '$table'
+ )";
+ }
+
+ }
+
+ # change nullability from NULL to NOT NULL...
+ # this one could be more complicated, need to set a DEFAULT value and update
+ # the table first...
+ if ( $old_column->null && ! $new_column->null ) {
+
+ warn $warning if $warning;
+ if ( $pg_server_version < 70300 ) {
+ $hashref->{'sql_alter_null'} =
+ "UPDATE pg_attribute SET attnotnull = TRUE
+ WHERE attname = '$name'
+ AND attrelid = ( SELECT oid FROM pg_class
+ WHERE relname = '$table'
+ )";
+ }
+
+ }
+
+ $hashref;
+
+}
+
+sub column_value_needs_quoting {
+ my($proto, $col) = @_;
+ _type_needs_quoting($col->type);
+}
+
+sub _type_needs_quoting {
+ my $type = shift;
+ $type !~ m{^(
+ int(?:2|4|8)?
+ | smallint
+ | integer
+ | bigint
+ | (?:numeric|decimal)(?:\(\d+(?:\s*\,\s*\d+\))?)?
+ | real
+ | double\s+precision
+ | float(?:\(\d+\))?
+ | serial(?:4|8)?
+ | bigserial
+ )$}ix;
+}
+
+
=head1 AUTHOR
Ivan Kohler <ivan-dbix-dbschema@420.am>
Copyright (c) 2000 Ivan Kohler
Copyright (c) 2000 Mail Abuse Prevention System LLC
+Copyright (c) 2009-2013 Freeside Internet Services, Inc.
All rights reserved.
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=head1 BUGS
-Yes.
-
columns doesn't return column default information.
=head1 SEE ALSO
projects / DBIx-DBSchema.git / blobdiff