From: Matt S Trout <mst@shadowcat.co.uk>
Date: Tue, 17 Jan 2006 03:28:32 +0000 (+0000)
Subject: Imported Jess Robinson's SQL::Translator::Parser::DBIx::Class
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=b02b20b56500df1a14767b843c3f3e026512407e;p=dbsrgits%2FDBIx-Class-Historic.git

Imported Jess Robinson's SQL::Translator::Parser::DBIx::Class
---

diff --git a/lib/SQL/Translator/Parser/DBIx/Class.pm b/lib/SQL/Translator/Parser/DBIx/Class.pm
new file mode 100644
index 0000000..a7dcc53
--- /dev/null
+++ b/lib/SQL/Translator/Parser/DBIx/Class.pm
@@ -0,0 +1,95 @@
+package SQL::Translator::Parser::DBIx::Class;
+
+# AUTHOR: Jess Robinson
+
+use strict;
+use warnings;
+use vars qw($DEBUG $VERSION @EXPORT_OK);
+$DEBUG = 0 unless defined $DEBUG;
+$VERSION = sprintf "%d.%02d", q$Revision 1.0$ =~ /(\d+)\.(\d+)/;
+
+use Exporter;
+use Data::Dumper;
+use SQL::Translator::Utils qw(debug normalize_name);
+
+use base qw(Exporter);
+
+@EXPORT_OK = qw(parse);
+
+# -------------------------------------------------------------------
+# parse($tr, $data)
+#
+# Note that $data, in the case of this parser, is unuseful.
+# We're working with DBIx::Class Schemas, not data streams.
+# -------------------------------------------------------------------
+sub parse {
+    my ($tr, $data) = @_;
+    my $args        = $tr->parser_args;
+    my $dbixschema  = $args->{'DBIx::Schema'} || $data;
+    
+    die 'No DBIx::Schema' unless ($dbixschema);
+    if (!ref $dbixschema) {
+      eval "use $dbixschema;";
+      die "Can't load $dbixschema ($@)" if($@);
+    }
+
+    my $schema      = $tr->schema;
+    my $table_no    = 0;
+
+#    print Dumper($dbixschema->registered_classes);
+
+    foreach my $tableclass ($dbixschema->registered_classes)
+    {
+        eval "use $tableclass";
+        print("Can't load $tableclass"), next if($@);
+        my $source = $tableclass->result_source_instance;
+
+        my $table = $schema->add_table(
+                                       name => $source->name,
+                                       type => 'TABLE',
+                                       ) || die $schema->error;
+        my $colcount = 0;
+        foreach my $col ($source->columns)
+        {
+            # assuming column_info in dbix is the same as DBI (?)
+            # data_type is a number, column_type is text?
+            my %colinfo = (
+              name => $col,
+              default_value => '',
+              size => 0,
+              is_auto_increment => 0,
+              is_foreign_key => 0,
+              is_nullable => 0,
+              %{$source->column_info($col)}
+            );
+            my $f = $table->add_field(%colinfo) || die $table->error;
+        }
+        $table->primary_key($source->primary_columns);
+
+
+        my @rels = $source->relationships();
+        foreach my $rel (@rels)
+        {
+            my $rel_info = $source->relationship_info($rel);
+            print "Accessor: $rel_info->{attrs}{accessor}\n";
+            next if(!exists $rel_info->{attrs}{accessor} ||
+                    $rel_info->{attrs}{accessor} ne 'filter');
+            my $rel_table = $source->related_source($rel)->name; # rel_info->{class}->table();
+            my $cond = (keys (%{$rel_info->{cond}}))[0];
+            my ($refkey) = $cond =~ /^\w+\.(\w+)$/;
+            if($rel_table && $refkey)
+            {
+                $table->add_constraint(
+                            type             => 'foreign_key', 
+                            name             => "fk_${rel}_id",
+                            fields           => $rel,
+                            reference_fields => $refkey,
+                            reference_table  => $rel_table,
+                                       );
+            }
+        }
+    }
+
+}    
+
+1;