is_deferrable patch from Debolaz

[dbsrgits/DBIx-Class.git] / lib / SQL / Translator / Parser / DBIx / Class.pm

diff --git a/lib/SQL/Translator/Parser/DBIx/Class.pm b/lib/SQL/Translator/Parser/DBIx/Class.pm
index e2a3832..194ae0b 100644 (file)
--- a/lib/SQL/Translator/Parser/DBIx/Class.pm
+++ b/lib/SQL/Translator/Parser/DBIx/Class.pm
@@ -5,6 +5,8 @@ package # hide from PAUSE
 
 # Some mistakes the fault of Matt S Trout
 
+# Others the fault of Ash Berlin
+
 use strict;
 use warnings;
 use vars qw($DEBUG $VERSION @EXPORT_OK);
@@ -26,10 +28,11 @@ use base qw(Exporter);
 # We're working with DBIx::Class Schemas, not data streams.
 # -------------------------------------------------------------------
 sub parse {
-    my ($tr, $data) = @_;
-    my $args        = $tr->parser_args;
-    my $dbixschema  = $args->{'DBIx::Schema'} || $data;
-    $dbixschema   ||= $args->{'package'};
+    my ($tr, $data)   = @_;
+    my $args          = $tr->parser_args;
+    my $dbixschema    = $args->{'DBIx::Schema'} || $data;
+    $dbixschema     ||= $args->{'package'};
+    my $limit_sources = $args->{'sources'};
     
     die 'No DBIx::Schema' unless ($dbixschema);
     if (!ref $dbixschema) {
@@ -43,12 +46,31 @@ sub parse {
 #    print Dumper($dbixschema->registered_classes);
 
     #foreach my $tableclass ($dbixschema->registered_classes)
-    foreach my $moniker ($dbixschema->sources)
+
+    my %seen_tables;
+
+    my @monikers = $dbixschema->sources;
+    if ($limit_sources) {
+        my $ref = ref $limit_sources || '';
+        die "'sources' parameter must be an array or hash ref" unless $ref eq 'ARRAY' || ref eq 'HASH';
+
+        # limit monikers to those specified in 
+        my $sources;
+        if ($ref eq 'ARRAY') {
+            $sources->{$_} = 1 for (@$limit_sources);
+        } else {
+            $sources = $limit_sources;
+        }
+        @monikers = grep { $sources->{$_} } @monikers;
+    }
+
+
+    foreach my $moniker (sort @monikers)
     {
-        #eval "use $tableclass";
-        #print("Can't load $tableclass"), next if($@);
         my $source = $dbixschema->source($moniker);
 
+        next if $seen_tables{$source->name}++;
+
         my $table = $schema->add_table(
                                        name => $source->name,
                                        type => 'TABLE',
@@ -56,7 +78,7 @@ sub parse {
         my $colcount = 0;
         foreach my $col ($source->columns)
         {
-            # assuming column_info in dbix is the same as DBI (?)
+            # assuming column_info in dbic is the same as DBI (?)
             # data_type is a number, column_type is text?
             my %colinfo = (
               name => $col,
@@ -86,7 +108,10 @@ sub parse {
         }
 
         my @rels = $source->relationships();
-        foreach my $rel (@rels)
+
+        my %created_FK_rels;
+
+        foreach my $rel (sort @rels)
         {
             my $rel_info = $source->relationship_info($rel);
 
@@ -103,7 +128,6 @@ sub parse {
 
             if($rel_table)
             {
-
                 my $reverse_rels = $source->reverse_relationship_info($rel);
                 my ($otherrelname, $otherrelationship) = each %{$reverse_rels};
 
@@ -115,12 +139,25 @@ sub parse {
                     $on_update = $otherrelationship->{'attrs'}->{cascade_copy} ? 'CASCADE' : '';
                 }
 
+                my $is_deferrable = $rel_info->{attrs}{is_deferrable} || 0;
+
+                # Make sure we dont create the same foreign key constraint twice
+                my $key_test = join("\x00", @keys);
+
                 #Decide if this is a foreign key based on whether the self
                 #items are our primary columns.
 
                 # If the sets are different, then we assume it's a foreign key from
                 # us to another table.
-                if (!$source->compare_relationship_keys(\@keys, \@primary)) {
+                # OR: If is_foreign_key_constraint attr is explicity set (or set to false) on the relation
+                if ( ! exists $created_FK_rels{$rel_table}->{$key_test} &&
+                     ( exists $rel_info->{attrs}{is_foreign_key_constraint} ?
+                       $rel_info->{attrs}{is_foreign_key_constraint} :
+                       !$source->compare_relationship_keys(\@keys, \@primary)
+                    )
+                   )
+                {
+                    $created_FK_rels{$rel_table}->{$key_test} = 1;
                     $table->add_constraint(
                                 type             => 'foreign_key',
                                 name             => "fk_$keys[0]",
@@ -128,12 +165,22 @@ sub parse {
                                 reference_fields => \@refkeys,
                                 reference_table  => $rel_table,
                                 on_delete        => $on_delete,
-                                on_update        => $on_update
+                                on_update        => $on_update,
+                                deferrable       => $is_deferrable,
                     );
                 }
             }
         }
+
+        if ($source->result_class->can('sqlt_deploy_hook')) {
+          $source->result_class->sqlt_deploy_hook($table);
+        }
+    }
+
+    if ($dbixschema->can('sqlt_deploy_hook')) {
+      $dbixschema->sqlt_deploy_hook($schema);
     }
+
     return 1;
 }