Improve trigger 'scope' attribute support (RT#119997)

[dbsrgits/SQL-Translator.git] / lib / SQL / Translator / Producer.pm

diff --git a/lib/SQL/Translator/Producer.pm b/lib/SQL/Translator/Producer.pm
index 28d6d0e..94a3d43 100644 (file)
--- a/lib/SQL/Translator/Producer.pm
+++ b/lib/SQL/Translator/Producer.pm
@@ -1,60 +1,112 @@
 package SQL::Translator::Producer;
 
-#-----------------------------------------------------
-# $Id: Producer.pm,v 1.1.1.1.2.1 2002-03-15 20:13:46 dlc Exp $
-#-----------------------------------------------------
-# Copyright (C) 2002 Ken Y. Clark <kycl4rk@users.sourceforge.net>,
-#                    darren chamberlain <darren@cpan.org>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; version 2.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307  USA
-# -------------------------------------------------------------------
-
 use strict;
-use vars qw($VERSION);
-$VERSION = sprintf "%d.%02d", q$Revision: 1.1.1.1.2.1 $ =~ /(\d+)\.(\d+)/;
+use warnings;
+use Scalar::Util ();
+our $VERSION = '1.59';
 
 sub produce { "" }
 
+# Do not rely on this if you are not bundled with SQL::Translator.
+# -- rjbs, 2008-09-30
+## $exceptions contains an arrayref of paired values
+## Each pair contains a pattern match or string, and a value to be used as
+## the default if matched.
+## They are special per Producer, and provide support for the old 'now()'
+## default value exceptions
+sub _apply_default_value {
+  my ($self, $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
+      $$field_ref .= " DEFAULT $default";
+  } else {
+      $default = $self->_quote_string($default);
+      $$field_ref .= " DEFAULT $default";
+  }
+
+}
+
+sub _quote_string {
+    my ($self, $string) = @_;
+    $string =~ s/'/''/g;
+    return qq{'$string'};
+}
+
 1;
 
-#-----------------------------------------------------
+# -------------------------------------------------------------------
 # A burnt child loves the fire.
 # Oscar Wilde
-#-----------------------------------------------------
-
-=head1 NAME
+# -------------------------------------------------------------------
 
-SQL::Translator::Producer - base object for Producers
+=pod
 
-=head1 SYNOPSIS
+=head1 NAME
 
+SQL::Translator::Producer - describes how to write a producer
 
 =head1 DESCRIPTION
 
 Producer modules designed to be used with SQL::Translator need to
 implement a single function, called B<produce>.  B<produce> will be
-called with a data structure created by a SQL::Translator::Parser
-subclass.  It is expected to return a string containing a valid SQL
-create statement.
+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 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)
+
+=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