-package # hide from PAUSE
+package # hide from PAUSE
SQL::Translator::Parser::DBIx::Class;
# AUTHOR: Jess Robinson
# 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);
# -------------------------------------------------------------------
# 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 $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);
+ $schema->name( ref($dbicschema) . " v" . ($dbicschema->VERSION || '1.x'))
+ unless ($schema->name);
+
+ my %seen_tables;
+
+ 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 $tableclass ($dbixschema->registered_classes)
- foreach my $moniker ($dbixschema->sources)
+
+ 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(
name => $source->name,
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,
}
$table->primary_key($source->primary_columns);
+ my @primary = $source->primary_columns;
+ foreach my $field (@primary) {
+ my $index = $table->add_index(
+ name => $field,
+ fields => [$field],
+ type => 'NORMAL',
+ );
+ }
+ my %unique_constraints = $source->unique_constraints;
+ foreach my $uniq (sort keys %unique_constraints) {
+ if (!$source->compare_relationship_keys($unique_constraints{$uniq}, \@primary)) {
+ $table->add_constraint(
+ type => 'unique',
+ name => _create_unique_symbol($uniq),
+ fields => $unique_constraints{$uniq}
+ );
+
+ my $index = $table->add_index(
+ name => _create_unique_symbol(join('_', @{$unique_constraints{$uniq}})),
+ fields => $unique_constraints{$uniq},
+ type => 'NORMAL',
+ );
+
+ }
+ }
+
my @rels = $source->relationships();
- foreach my $rel (@rels)
+
+ my %created_FK_rels;
+
+ foreach my $rel (sort @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' : '';
+ }
+
+ 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.
+ # 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;
+}
+
+# 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