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package # hide from PAUSE
SQL::Translator::Parser::DBIx::Class;
# AUTHOR: Jess Robinson
# Some mistakes the fault of Matt S Trout
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 $data, in the case of this parser, is not useful.
# We're working with DBIx::Class Schemas, not data streams.
# -------------------------------------------------------------------
sub parse {
my ($tr, $data) = @_;
my $args = $tr->parser_args;
my $dbixschema = $args->{'DBIx::Schema'} || $data;
$dbixschema ||= $args->{'package'};
die 'No DBIx::Schema' unless ($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)
my %seen_tables;
foreach my $moniker ($dbixschema->sources)
{
#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',
) || 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 => $col,
size => 0,
is_auto_increment => 0,
is_foreign_key => 0,
is_nullable => 0,
%{$source->column_info($col)}
);
if ($colinfo{is_nullable}) {
$colinfo{default} = '' unless exists $colinfo{default};
}
my $f = $table->add_field(%colinfo) || die $table->error;
}
$table->primary_key($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();
foreach my $rel (@rels)
{
my $rel_info = $source->relationship_info($rel);
# 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 = $otherrelationship->{'attrs'}->{cascade_copy} ? 'CASCADE' : '';
}
#Decide if this is a foreign key based on whether the self
#items are our primary columns.
# If the sets are different, then we assume it's a foreign key from
# us to another table.
if (!$source->compare_relationship_keys(\@keys, \@primary)) {
$table->add_constraint(
type => 'foreign_key',
name => "fk_$keys[0]",
fields => \@keys,
reference_fields => \@refkeys,
reference_table => $rel_table,
on_delete => $on_delete,
on_update => $on_update
);
}
}
}
}
return 1;
}
1;
|
