X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FTranslator%2FParser%2FDBIx%2FClass.pm;h=e3f0860d7b3e4671cb611c8a2a2454cddfae8861;hb=3d618782661512ffb7b263a222e183808170b88a;hp=53e36efa88dea229b8e9bc883ba5fb19c4aa35be;hpb=c0e7b4e55952cd193b6f1866d0c27ece182397eb;p=dbsrgits%2FDBIx-Class.git diff --git a/lib/SQL/Translator/Parser/DBIx/Class.pm b/lib/SQL/Translator/Parser/DBIx/Class.pm index 53e36ef..e3f0860 100644 --- a/lib/SQL/Translator/Parser/DBIx/Class.pm +++ b/lib/SQL/Translator/Parser/DBIx/Class.pm @@ -1,4 +1,4 @@ -package # hide from PAUSE +package # hide from PAUSE SQL::Translator::Parser::DBIx::Class; # AUTHOR: Jess Robinson @@ -22,14 +22,15 @@ use base qw(Exporter); # ------------------------------------------------------------------- # parse($tr, $data) # -# Note that $data, in the case of this parser, is unuseful. +# Note that $data, in the case of this parser, is not useful. # We're working with DBIx::Class Schemas, not data streams. # ------------------------------------------------------------------- sub parse { - my ($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 $dbixschema) { @@ -43,12 +44,33 @@ sub parse { # print Dumper($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 (@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', @@ -73,39 +95,84 @@ sub parse { } $table->primary_key($source->primary_columns); + my @primary = $source->primary_columns; + my %unique_constraints = $source->unique_constraints; + foreach my $uniq (keys %unique_constraints) { + if (!$source->compare_relationship_keys($unique_constraints{$uniq}, \@primary)) { + $table->add_constraint( + type => 'unique', + name => "$uniq", + fields => $unique_constraints{$uniq} + ); + } + } + my @rels = $source->relationships(); + + my %created_FK_rels; + foreach my $rel (@rels) { my $rel_info = $source->relationship_info($rel); - next if(!exists $rel_info->{attrs}{accessor} || - $rel_info->{attrs}{accessor} eq 'multi'); - # Going by the accessor type isn't such a good idea (yes, I know - # I suggested it). I think the best way to tell if something's a - # foreign key constraint is to assume if it doesn't include our - # primaries then it is (dumb but it'll do). Ignore any rel cond - # that isn't a straight hash, but get both sets of keys in full - # so you don't barf on multi-primaries. Oh, and a dog-simple - # deploy method to chuck the results of this exercise at a db - # for testing is - # $schema->storage->dbh->do($_) for split(";\n", $sql); - # -- mst (03:42 local time, please excuse any mistakes) - my $rel_table = $source->related_source($rel)->name; - my $cond = (keys (%{$rel_info->{cond}}))[0]; - my ($refkey) = $cond =~ /^\w+\.(\w+)$/; - my ($key) = $rel_info->{cond}->{$cond} =~ /^\w+\.(\w+)$/; - if($rel_table && $refkey) - { - $table->add_constraint( - type => 'foreign_key', - name => "fk_${key}", - fields => $key, - reference_fields => $refkey, - reference_table => $rel_table, - ); + + # Ignore any rel cond that isn't a straight hash + next unless ref $rel_info->{cond} eq 'HASH'; + + my $othertable = $source->related_source($rel); + my $rel_table = $othertable->name; + + # Get the key information, mapping off the foreign/self markers + my @cond = keys(%{$rel_info->{cond}}); + my @refkeys = map {/^\w+\.(\w+)$/} @cond; + my @keys = map {$rel_info->{cond}->{$_} =~ /^\w+\.(\w+)$/} @cond; + + if($rel_table) + { + + my $reverse_rels = $source->reverse_relationship_info($rel); + my ($otherrelname, $otherrelationship) = each %{$reverse_rels}; + + my $on_delete = ''; + my $on_update = ''; + + if (defined $otherrelationship) { + $on_delete = $otherrelationship->{'attrs'}->{cascade_delete} ? 'CASCADE' : ''; + $on_update = $otherrelationship->{'attrs'}->{cascade_copy} ? 'CASCADE' : ''; + } + + # 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. + $DB::single = 1 if $moniker eq 'Tests::MBTI::Result'; + + # If the sets are different, then we assume it's a foreign key from + # us to another table. + # 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]", + fields => \@keys, + reference_fields => \@refkeys, + reference_table => $rel_table, + on_delete => $on_delete, + on_update => $on_update + ); + } } } } - -} + return 1; +} 1; +