package SQL::Translator::Schema::Constraint;
# ----------------------------------------------------------------------
-# $Id: Constraint.pm,v 1.14 2004-11-04 16:29:56 grommit Exp $
-# ----------------------------------------------------------------------
-# Copyright (C) 2002-4 SQLFairy Authors
+# Copyright (C) 2002-2009 SQLFairy Authors
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
use vars qw($VERSION $TABLE_COUNT $VIEW_COUNT);
-$VERSION = sprintf "%d.%02d", q$Revision: 1.14 $ =~ /(\d+)\.(\d+)/;
+$VERSION = '1.59';
my %VALID_CONSTRAINT_TYPE = (
PRIMARY_KEY, 1,
);
# ----------------------------------------------------------------------
-sub init {
+__PACKAGE__->_attributes( qw/
+ table name type fields reference_fields reference_table
+ match_type on_delete on_update expression deferrable
+/);
+
+# Override to remove empty arrays from args.
+# t/14postgres-parser breaks without this.
+sub init {
+
=pod
=head2 new
=cut
- my ( $self, $config ) = @_;
- my @fields = qw[
- table name type fields reference_fields reference_table
- match_type on_delete on_update expression
- ];
-
- for my $arg ( @fields ) {
- next unless $config->{ $arg };
- next if ref $config->{ $arg } eq 'ARRAY' && ! @{ $config->{ $arg } };
- defined $self->$arg( $config->{ $arg } ) or return;
- }
-
- return $self;
+ my $self = shift;
+ foreach ( values %{$_[0]} ) { $_ = undef if ref($_) eq "ARRAY" && ! @$_; }
+ $self->SUPER::init(@_);
}
# ----------------------------------------------------------------------
=cut
my $self = shift;
- return wantarray ? @{ $self->{'fields'} } : $self->{'fields'};
+ return wantarray ? @{ $self->{'fields'} || [] } : ($self->{'fields'} || '');
}
# ----------------------------------------------------------------------
return $self->{'type'} || '';
}
+
+# ----------------------------------------------------------------------
+sub equals {
+
+=pod
+
+=head2 equals
+
+Determines if this constraint is the same as another
+
+ my $isIdentical = $constraint1->equals( $constraint2 );
+
+=cut
+
+ my $self = shift;
+ my $other = shift;
+ my $case_insensitive = shift;
+ my $ignore_constraint_names = shift;
+
+ return 0 unless $self->SUPER::equals($other);
+ return 0 unless $self->type eq $other->type;
+ unless ($ignore_constraint_names) {
+ return 0 unless $case_insensitive ? uc($self->name) eq uc($other->name) : $self->name eq $other->name;
+ }
+ return 0 unless $self->deferrable eq $other->deferrable;
+ #return 0 unless $self->is_valid eq $other->is_valid;
+ return 0 unless $case_insensitive ? uc($self->table->name) eq uc($other->table->name)
+ : $self->table->name eq $other->table->name;
+ return 0 unless $self->expression eq $other->expression;
+
+ # Check fields, regardless of order
+ my %otherFields = (); # create a hash of the other fields
+ foreach my $otherField ($other->fields) {
+ $otherField = uc($otherField) if $case_insensitive;
+ $otherFields{$otherField} = 1;
+ }
+ foreach my $selfField ($self->fields) { # check for self fields in hash
+ $selfField = uc($selfField) if $case_insensitive;
+ return 0 unless $otherFields{$selfField};
+ delete $otherFields{$selfField};
+ }
+ # Check all other fields were accounted for
+ return 0 unless keys %otherFields == 0;
+
+ # Check reference fields, regardless of order
+ my %otherRefFields = (); # create a hash of the other reference fields
+ foreach my $otherRefField ($other->reference_fields) {
+ $otherRefField = uc($otherRefField) if $case_insensitive;
+ $otherRefFields{$otherRefField} = 1;
+ }
+ foreach my $selfRefField ($self->reference_fields) { # check for self reference fields in hash
+ $selfRefField = uc($selfRefField) if $case_insensitive;
+ return 0 unless $otherRefFields{$selfRefField};
+ delete $otherRefFields{$selfRefField};
+ }
+ # Check all other reference fields were accounted for
+ return 0 unless keys %otherRefFields == 0;
+
+ return 0 unless $case_insensitive ? uc($self->reference_table) eq uc($other->reference_table) : $self->reference_table eq $other->reference_table;
+ return 0 unless $self->match_type eq $other->match_type;
+ return 0 unless $self->on_delete eq $other->on_delete;
+ return 0 unless $self->on_update eq $other->on_update;
+ return 0 unless $self->_compare_objects(scalar $self->options, scalar $other->options);
+ return 0 unless $self->_compare_objects(scalar $self->extra, scalar $other->extra);
+ return 1;
+}
+
# ----------------------------------------------------------------------
sub DESTROY {
my $self = shift;