package SQL::Translator::Schema::Constraint;
# ----------------------------------------------------------------------
-# $Id: Constraint.pm,v 1.2 2003-05-05 04:32:39 kycl4rk Exp $
+# $Id: Constraint.pm,v 1.9 2003-09-25 01:31:28 allenday Exp $
# ----------------------------------------------------------------------
# Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org>
#
use strict;
use Class::Base;
use SQL::Translator::Schema::Constants;
+use SQL::Translator::Utils 'parse_list_arg';
use base 'Class::Base';
use vars qw($VERSION $TABLE_COUNT $VIEW_COUNT);
-$VERSION = 1.00;
+$VERSION = sprintf "%d.%02d", q$Revision: 1.9 $ =~ /(\d+)\.(\d+)/;
-use constant VALID_TYPE => {
+my %VALID_CONSTRAINT_TYPE = (
PRIMARY_KEY, 1,
UNIQUE, 1,
CHECK_C, 1,
FOREIGN_KEY, 1,
-};
+ NOT_NULL, 1,
+);
# ----------------------------------------------------------------------
sub init {
Object constructor.
my $schema = SQL::Translator::Schema::Constraint->new(
- table => $table, # the table to which it belongs
+ table => $table, # table to which it belongs
type => 'foreign_key', # type of table constraint
- name => 'fk_phone_id', # the name of the constraint
- fields => 'phone_id', # the field in the referring table
- reference_fields => 'phone_id', # the referenced table
- reference_table => 'phone', # the referenced fields
+ name => 'fk_phone_id', # name of the constraint
+ fields => 'phone_id', # field in the referring table
+ reference_fields => 'phone_id', # referenced field
+ reference_table => 'phone', # referenced table
match_type => 'full', # how to match
on_delete_do => 'cascade', # what to do on deletes
on_update_do => '', # what to do on updates
=cut
my ( $self, $config ) = @_;
-# match_type on_delete_do on_update_do
- my @fields = qw[ name type fields reference_fields reference_table table ];
+ 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 };
- $self->$arg( $config->{ $arg } ) or return;
+ next if ref $config->{ $arg } eq 'ARRAY' && ! @{ $config->{ $arg } };
+ defined $self->$arg( $config->{ $arg } ) or return;
}
return $self;
=cut
my $self = shift;
- my $fields = UNIVERSAL::isa( $_[0], 'ARRAY' )
- ? shift : [ map { s/^\s+|\s+$//g; $_ } map { split /,/ } @_ ];
+ my $fields = parse_list_arg( @_ );
if ( @$fields ) {
my ( %unique, @unique );
$self->{'fields'} = \@unique;
}
- return wantarray ? @{ $self->{'fields'} || [] } : $self->{'fields'};
+ if ( @{ $self->{'fields'} || [] } ) {
+ return wantarray ? @{ $self->{'fields'} } : $self->{'fields'};
+ }
+ else {
+ return wantarray ? () : undef;
+ }
+}
+
+# ----------------------------------------------------------------------
+sub match_type {
+
+=pod
+
+=head2 match_type
+
+Get or set the constraint's match_type. Only valid values are "full"
+or "partial."
+
+ my $match_type = $constraint->match_type('FULL');
+
+=cut
+
+ my $self = shift;
+
+ if ( my $arg = lc shift ) {
+ return $self->error("Invalid match type: $arg")
+ unless $arg eq 'full' || $arg eq 'partial';
+ $self->{'match_type'} = $arg;
+ }
+
+ return $self->{'match_type'} || '';
}
# ----------------------------------------------------------------------
=cut
my $self = shift;
- $self->{'name'} = shift if @_;
+ my $arg = shift || '';
+ $self->{'name'} = $arg if $arg;
return $self->{'name'} || '';
}
# ----------------------------------------------------------------------
+sub options {
+
+=pod
+
+=head2 options
+
+Gets or adds to the constraints's options (e.g., "INITIALLY IMMEDIATE").
+Returns an array or array reference.
+
+ $constraint->options('NORELY');
+ my @options = $constraint->options;
+
+=cut
+
+ my $self = shift;
+ my $options = parse_list_arg( @_ );
+
+ push @{ $self->{'options'} }, @$options;
+
+ if ( ref $self->{'options'} ) {
+ return wantarray ? @{ $self->{'options'} || [] } : $self->{'options'};
+ }
+ else {
+ return wantarray ? () : [];
+ }
+}
+
+
+# ----------------------------------------------------------------------
sub on_delete {
=pod
=cut
my $self = shift;
- my $fields = UNIVERSAL::isa( $_[0], 'ARRAY' )
- ? shift : [ map { s/^\s+|\s+$//g; $_ } map { split /,/ } @_ ];
+ my $fields = parse_list_arg( @_ );
if ( @$fields ) {
$self->{'reference_fields'} = $fields;
return $self->{'reference_table'} || '';
}
-
-# ----------------------------------------------------------------------
-sub type {
-
-=pod
-
-=head2 type
-
-Get or set the constraint's type.
-
- my $type = $constraint->type( PRIMARY_KEY );
-
-=cut
-
- my $self = shift;
-
- if ( my $type = shift ) {
- return $self->error("Invalid constraint type: $type")
- unless VALID_TYPE->{ $type };
- $self->{'type'} = $type;
- }
-
- return $self->{'type'} || '';
-}
-
-
# ----------------------------------------------------------------------
sub table {
}
# ----------------------------------------------------------------------
-sub options {
+sub type {
=pod
-=head2 options
+=head2 type
-Gets or adds to the constraints's options (e.g., "INITIALLY IMMEDIATE").
-Returns an array or array reference.
+Get or set the constraint's type.
- $constraint->options('NORELY');
- my @options = $constraint->options;
+ my $type = $constraint->type( PRIMARY_KEY );
=cut
- my $self = shift;
- my $options = UNIVERSAL::isa( $_[0], 'ARRAY' )
- ? shift : [ map { s/^\s+|\s+$//g; $_ } map { split /,/ } @_ ];
-
- push @{ $self->{'options'} }, @$options;
+ my $self = shift;
- if ( ref $self->{'options'} ) {
- return wantarray ? @{ $self->{'options'} || [] } : $self->{'options'};
- }
- else {
- return wantarray ? () : [];
+ if ( my $type = uc shift ) {
+ $type =~ s/_/ /g;
+ return $self->error("Invalid constraint type: $type")
+ unless $VALID_CONSTRAINT_TYPE{ $type };
+ $self->{'type'} = $type;
}
+
+ return $self->{'type'} || '';
+}
+# ----------------------------------------------------------------------
+sub DESTROY {
+ my $self = shift;
+ undef $self->{'table'}; # destroy cyclical reference
}
1;
projects / dbsrgits/SQL-Translator.git / blobdiff