# Some mistakes the fault of Matt S Trout
+# Others the fault of Ash Berlin
+
use strict;
use warnings;
-use vars qw($DEBUG $VERSION @EXPORT_OK);
+use vars qw($DEBUG @EXPORT_OK);
$DEBUG = 0 unless defined $DEBUG;
-$VERSION = sprintf "%d.%02d", q$Revision 1.0$ =~ /(\d+)\.(\d+)/;
use Exporter;
use Data::Dumper;
+use Digest::SHA1 qw( sha1_hex );
use SQL::Translator::Utils qw(debug normalize_name);
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 $dbicschema = $args->{'DBIx::Class::Schema'} || $args->{"DBIx::Schema"} ||$data;
+ $dbicschema ||= $args->{'package'};
+ my $limit_sources = $args->{'sources'};
- die 'No DBIx::Schema' unless ($dbixschema);
- if (!ref $dbixschema) {
- eval "use $dbixschema;";
- die "Can't load $dbixschema ($@)" if($@);
+ die 'No DBIx::Class::Schema' unless ($dbicschema);
+ if (!ref $dbicschema) {
+ eval "use $dbicschema;";
+ die "Can't load $dbicschema ($@)" if($@);
}
my $schema = $tr->schema;
my $table_no = 0;
-# print Dumper($dbixschema->registered_classes);
-
- #foreach my $tableclass ($dbixschema->registered_classes)
+ $schema->name( ref($dbicschema) . " v" . ($dbicschema->VERSION || '1.x'))
+ unless ($schema->name);
my %seen_tables;
- foreach my $moniker ($dbixschema->sources)
+ my @monikers = sort $dbicschema->sources;
+ if ($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);
+ my $source = $dbicschema->source($moniker);
+ # Its possible to have multiple DBIC source using same table
next if $seen_tables{$source->name}++;
my $table = $schema->add_table(
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,
my @primary = $source->primary_columns;
my %unique_constraints = $source->unique_constraints;
- foreach my $uniq (keys %unique_constraints) {
+ foreach my $uniq (sort keys %unique_constraints) {
if (!$source->compare_relationship_keys($unique_constraints{$uniq}, \@primary)) {
$table->add_constraint(
type => 'unique',
- name => "$uniq",
+ name => _create_unique_symbol($uniq),
fields => $unique_constraints{$uniq}
);
}
}
my @rels = $source->relationships();
- foreach my $rel (@rels)
+
+ my %created_FK_rels;
+
+ foreach my $rel (sort @rels)
{
my $rel_info = $source->relationship_info($rel);
my $rel_table = $othertable->name;
# Get the key information, mapping off the foreign/self markers
- my @cond = keys(%{$rel_info->{cond}});
+ my @cond = keys(%{$rel_info->{cond}});
my @refkeys = map {/^\w+\.(\w+)$/} @cond;
+
+ # Force the order of the referenced fields to be the same as
+ # ->add_columns method.
+ my $idx;
+ my %other_columns_idx = map {$_ => $idx++} $othertable->columns;
+ @refkeys = sort { $other_columns_idx{$a} cmp $other_columns_idx{$b} } @refkeys;
+
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};
$on_update = $otherrelationship->{'attrs'}->{cascade_copy} ? 'CASCADE' : '';
}
+ my $is_deferrable = $rel_info->{attrs}{is_deferrable};
+
+ # 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)) {
- $table->add_constraint(
- type => 'foreign_key',
- name => "fk_$keys[0]",
- fields => \@keys,
- reference_fields => \@refkeys,
- reference_table => $rel_table,
- on_delete => $on_delete,
- on_update => $on_update
- );
+ # OR: If is_foreign_key_constraint attr is explicity set (or set to false) on the relation
+ next if ( exists $created_FK_rels{$rel_table}->{$key_test} );
+ if ( exists $rel_info->{attrs}{is_foreign_key_constraint}) {
+ # not is this attr set to 0 but definitely if set to 1
+ next unless ($rel_info->{attrs}{is_foreign_key_constraint});
+ } else {
+ # not if might have
+ # next if ($rel_info->{attrs}{accessor} eq 'single' && exists $rel_info->{attrs}{join_type} && uc($rel_info->{attrs}{join_type}) eq 'LEFT');
+ # not sure about this one
+ next if $source->compare_relationship_keys(\@keys, \@primary);
+ }
+
+ $created_FK_rels{$rel_table}->{$key_test} = 1;
+ if (scalar(@keys)) {
+ $table->add_constraint(
+ type => 'foreign_key',
+ name => _create_unique_symbol($table->name
+ . '_fk_'
+ . join('_', @keys)),
+ fields => \@keys,
+ reference_fields => \@refkeys,
+ reference_table => $rel_table,
+ on_delete => $on_delete,
+ on_update => $on_update,
+ (defined $is_deferrable ? ( deferrable => $is_deferrable ) : ()),
+ );
+
+ my $index = $table->add_index(
+ name => _create_unique_symbol(join('_', @keys)),
+ fields => \@keys,
+ type => 'NORMAL',
+ );
}
}
}
+
+ if ($source->result_class->can('sqlt_deploy_hook')) {
+ $source->result_class->sqlt_deploy_hook($table);
+ }
+ }
+
+ if ($dbicschema->can('sqlt_deploy_hook')) {
+ $dbicschema->sqlt_deploy_hook($schema);
}
+
return 1;
}
-1;
+# TODO - is there a reasonable way to pass configuration?
+# Default of 64 comes from mysql's limit.
+our $MAX_SYMBOL_LENGTH ||= 64;
+our $COLLISION_TAG_LENGTH ||= 8;
+
+# -------------------------------------------------------------------
+# $resolved_name = _create_unique_symbol($desired_name)
+#
+# If desired_name is really long, it will be truncated in a way that
+# has a high probability of leaving it unique.
+# -------------------------------------------------------------------
+sub _create_unique_symbol {
+ my $desired_name = shift;
+ return $desired_name if length $desired_name <= $MAX_SYMBOL_LENGTH;
+
+ my $truncated_name = substr $desired_name, 0, $MAX_SYMBOL_LENGTH - $COLLISION_TAG_LENGTH - 1;
+
+ # Hex isn't the most space-efficient, but it skirts around allowed
+ # charset issues
+ my $digest = sha1_hex($desired_name);
+ my $collision_tag = substr $digest, 0, $COLLISION_TAG_LENGTH;
+ return $truncated_name
+ . '_'
+ . $collision_tag;
+}
+
+1;
projects / dbsrgits/DBIx-Class.git / blobdiff