package SQL::Translator::Producer;
-#-----------------------------------------------------
-# $Id: Producer.pm,v 1.1.1.1 2002-03-01 02:26:25 kycl4rk Exp $
-#
-# File : SQL/Translator/Producer.pm
-# Programmer : Ken Y. Clark, kclark@logsoft.com
-# Created : 2002/02/27
-# Purpose : base object for Producers
-#-----------------------------------------------------
-
use strict;
-use vars qw( $VERSION );
-$VERSION = (qw$Revision: 1.1.1.1 $)[-1];
-
-use SQL::Translator;
-use base qw[ SQL::Translator ];
-
-sub from { return shift()->{'from'} }
+use vars qw($VERSION);
+use Scalar::Util ();
+$VERSION = '1.59';
+
+sub produce { "" }
+
+# Do not rely on this if you are not bundled with SQL::Translator.
+# -- rjbs, 2008-09-30
+## $exceptions contains an arrayref of paired values
+## Each pair contains a pattern match or string, and a value to be used as
+## the default if matched.
+## They are special per Producer, and provide support for the old 'now()'
+## default value exceptions
+sub _apply_default_value {
+ my (undef, $field, $field_ref, $exceptions) = @_;
+ my $default = $field->default_value;
+ return if !defined $default;
+
+ if ($exceptions and ! ref $default) {
+ for (my $i = 0; $i < @$exceptions; $i += 2) {
+ my ($pat, $val) = @$exceptions[ $i, $i + 1 ];
+ if (ref $pat and $default =~ $pat) {
+ $default = $val;
+ last;
+ } elsif (lc $default eq lc $pat) {
+ $default = $val;
+ last
+ }
+ }
+ }
+
+ my $type = lc $field->data_type;
+ my $is_numeric_datatype = ($type =~ /^(?:(?:big|medium|small|tiny)?int(?:eger)?|decimal|double|float|num(?:ber|eric)?|real)$/);
+
+ if (ref $default) {
+ $$field_ref .= " DEFAULT $$default";
+ } elsif ($is_numeric_datatype && Scalar::Util::looks_like_number ($default) ) {
+ # we need to check the data itself in addition to the datatype, for basic safety
+ $$field_ref .= " DEFAULT $default";
+ } else {
+ $$field_ref .= " DEFAULT '$default'";
+ }
-sub header {
- my $self = shift;
- my $from = $self->from || '';
- my $to = $self->to || '';
- return <<"HEADER";
-#
-# $from-to-$to translator
-# Version: $SQL::Translator::VERSION
-#
-
-HEADER
}
1;
-#-----------------------------------------------------
+# -------------------------------------------------------------------
# A burnt child loves the fire.
# Oscar Wilde
-#-----------------------------------------------------
+# -------------------------------------------------------------------
+
+=pod
=head1 NAME
-SQL::Translator::Producer - base object for Producers
+SQL::Translator::Producer - describes how to write a producer
-=head1 SYNOPSIS
+=head1 DESCRIPTION
- package SQL::Translator::Producer::Foo;
- use SQL::Translator::Producer;
- use base( 'SQL::Translator::Producer' );
- 1;
+Producer modules designed to be used with SQL::Translator need to
+implement a single function, called B<produce>. B<produce> will be
+called with the SQL::Translator object from which it is expected to
+retrieve the SQL::Translator::Schema object which has been populated
+by the parser. It is expected to return a string.
-=head1 DESCRIPTION
+=head1 METHODS
+
+=over 4
+
+=item produce
+
+=item create_table($table)
+
+=item create_field($field)
+
+=item create_view($view)
+
+=item create_index($index)
+
+=item create_constraint($constraint)
+
+=item create_trigger($trigger)
+
+=item alter_field($from_field, $to_field)
+
+=item add_field($table, $new_field)
+
+=item drop_field($table, $old_field)
-Intended to serve as a base class for all SQL Translator producers.
+=back
-=head1 AUTHOR
+=head1 AUTHORS
-Ken Y. Clark, kclark@logsoft.com
+Darren Chamberlain E<lt>darren@cpan.orgE<gt>,
+Ken Y. Clark E<lt>kclark@cpan.orgE<gt>.
=head1 SEE ALSO
-perl(1).
+perl(1), SQL::Translator, SQL::Translator::Schema.
=cut