use strict;
use warnings;
-use Class::C3;
+use base 'Class::Accessor::Grouped';
+use mro 'c3';
use Carp::Clan qw/^DBIx::Class/;
+use Scalar::Util 'weaken';
+use DBIx::Class::Schema::Loader::Utils qw/split_name slurp_file array_eq apply uniq/;
+use Try::Tiny;
+use List::Util qw/all any first/;
+use namespace::clean;
use Lingua::EN::Inflect::Phrase ();
-use DBIx::Class::Schema::Loader::Utils 'split_name';
+use Lingua::EN::Tagger ();
+use String::ToIdentifier::EN ();
+use String::ToIdentifier::EN::Unicode ();
+use Class::Unload ();
+use Class::Inspector ();
-our $VERSION = '0.07000';
+our $VERSION = '0.07047';
+
+# Glossary:
+#
+# local_relname -- name of relationship from the local table referring to the remote table
+# remote_relname -- name of relationship from the remote table referring to the local table
+# remote_method -- relationship type from remote table to local table, usually has_many
=head1 NAME
=head2 new
-Arguments: schema_class (scalar), inflect_plural, inflect_singular
-
-C<$schema_class> should be a schema class name, where the source
-classes have already been set up and registered. Column info, primary
-key, and unique constraints will be drawn from this schema for all
-of the existing source monikers.
-
-Options inflect_plural and inflect_singular are optional, and are better documented
-in L<DBIx::Class::Schema::Loader::Base>.
+Arguments: $loader object
=head2 generate_code
-Arguments: local_moniker (scalar), fk_info (arrayref)
+Arguments:
-This generates the code for the relationships of a given table.
+ [
+ [ local_moniker1 (scalar), fk_info1 (arrayref), uniq_info1 (arrayref) ]
+ [ local_moniker2 (scalar), fk_info2 (arrayref), uniq_info2 (arrayref) ]
+ ...
+ ]
+
+This generates the code for the relationships of each table.
C<local_moniker> is the moniker name of the table which had the REFERENCES
statements. The fk_info arrayref's contents should take the form:
[
{
- local_columns => [ 'col2', 'col3' ],
- remote_columns => [ 'col5', 'col7' ],
+ local_table => 'some_table',
+ local_moniker => 'SomeTable',
+ local_columns => [ 'col2', 'col3' ],
+ remote_table => 'another_table_moniker',
remote_moniker => 'AnotherTableMoniker',
+ remote_columns => [ 'col5', 'col7' ],
},
{
- local_columns => [ 'col1', 'col4' ],
- remote_columns => [ 'col1', 'col2' ],
+ local_table => 'some_other_table',
+ local_moniker => 'SomeOtherTable',
+ local_columns => [ 'col1', 'col4' ],
+ remote_table => 'yet_another_table_moniker',
remote_moniker => 'YetAnotherTableMoniker',
+ remote_columns => [ 'col1', 'col2' ],
},
# ...
],
+The uniq_info arrayref's contents should take the form:
+
+ [
+ [
+ uniq_constraint_name => [ 'col1', 'col2' ],
+ ],
+ [
+ another_uniq_constraint_name => [ 'col1', 'col2' ],
+ ],
+ ],
+
This method will return the generated relationships as a hashref keyed on the
class names. The values are arrayrefs of hashes containing method name and
arguments, like so:
- {
- 'Some::Source::Class' => [
- { method => 'belongs_to', arguments => [ 'col1', 'Another::Source::Class' ],
- { method => 'has_many', arguments => [ 'anothers', 'Yet::Another::Source::Class', 'col15' ],
- ],
- 'Another::Source::Class' => [
- # ...
- ],
- # ...
- }
+ {
+ 'Some::Source::Class' => [
+ { method => 'belongs_to', arguments => [
+ 'col1', 'Another::Source::Class' ] },
+ { method => 'has_many', arguments => [
+ 'anothers', 'Yet::Another::Source::Class', 'col15' ] },
+ ],
+ 'Another::Source::Class' => [
+ # ...
+ ],
+ # ...
+ }
=cut
+__PACKAGE__->mk_group_accessors('simple', qw/
+ loader
+ schema
+ inflect_plural
+ inflect_singular
+ relationship_attrs
+ rel_collision_map
+ rel_name_map
+ allow_extra_m2m_cols
+ _temp_classes
+ __tagger
+/);
+
sub new {
- my ( $class, $schema, $inflect_pl, $inflect_singular, $rel_attrs ) = @_;
+ my ($class, $loader) = @_;
+
+ # from old POD about this constructor:
+ # C<$schema_class> should be a schema class name, where the source
+ # classes have already been set up and registered. Column info,
+ # primary key, and unique constraints will be drawn from this
+ # schema for all of the existing source monikers.
+
+ # Options inflect_plural and inflect_singular are optional, and
+ # are better documented in L<DBIx::Class::Schema::Loader::Base>.
my $self = {
- schema => $schema,
- inflect_plural => $inflect_pl,
- inflect_singular => $inflect_singular,
- relationship_attrs => $rel_attrs,
+ loader => $loader,
+ (map { $_ => $loader->$_ } qw(
+ schema inflect_plural inflect_singular
+ relationship_attrs rel_collision_map
+ rel_name_map allow_extra_m2m_cols
+ )),
+ _temp_classes => [],
};
+ weaken $self->{loader}; #< don't leak
+
+ bless $self => $class;
+
# validate the relationship_attrs arg
- if( defined $self->{relationship_attrs} ) {
- ref($self->{relationship_attrs}) eq 'HASH'
- or croak "relationship_attrs must be a hashref";
+ if( defined $self->relationship_attrs ) {
+ (ref $self->relationship_attrs eq 'HASH' || ref $self->relationship_attrs eq 'CODE')
+ or croak "relationship_attrs must be a hashref or coderef";
}
- return bless $self => $class;
+ return $self;
}
return '' if !defined $relname || $relname eq '';
- if( ref $self->{inflect_plural} eq 'HASH' ) {
- return $self->{inflect_plural}->{$relname}
- if exists $self->{inflect_plural}->{$relname};
+ my $result;
+ my $mapped = 0;
+
+ if( ref $self->inflect_plural eq 'HASH' ) {
+ if (exists $self->inflect_plural->{$relname}) {
+ $result = $self->inflect_plural->{$relname};
+ $mapped = 1;
+ }
}
- elsif( ref $self->{inflect_plural} eq 'CODE' ) {
- my $inflected = $self->{inflect_plural}->($relname);
- return $inflected if $inflected;
+ elsif( ref $self->inflect_plural eq 'CODE' ) {
+ my $inflected = $self->inflect_plural->($relname);
+ if ($inflected) {
+ $result = $inflected;
+ $mapped = 1;
+ }
}
- return $self->_to_PL($relname);
+ return ($result, $mapped) if $mapped;
+
+ return ($self->_to_PL($relname), 0);
}
# Singularize a relationship name
return '' if !defined $relname || $relname eq '';
- if( ref $self->{inflect_singular} eq 'HASH' ) {
- return $self->{inflect_singular}->{$relname}
- if exists $self->{inflect_singular}->{$relname};
+ my $result;
+ my $mapped = 0;
+
+ if( ref $self->inflect_singular eq 'HASH' ) {
+ if (exists $self->inflect_singular->{$relname}) {
+ $result = $self->inflect_singular->{$relname};
+ $mapped = 1;
+ }
}
- elsif( ref $self->{inflect_singular} eq 'CODE' ) {
- my $inflected = $self->{inflect_singular}->($relname);
- return $inflected if $inflected;
+ elsif( ref $self->inflect_singular eq 'CODE' ) {
+ my $inflected = $self->inflect_singular->($relname);
+ if ($inflected) {
+ $result = $inflected;
+ $mapped = 1;
+ }
}
- return $self->_to_S($relname);
+ return ($result, $mapped) if $mapped;
+
+ return ($self->_to_S($relname), 0);
}
sub _to_PL {
belongs_to => {
on_delete => 'CASCADE',
on_update => 'CASCADE',
-# is_deferrable => 1,
+ is_deferrable => 1,
},
} }
-# accessor for options to be passed to each generated relationship
-# type. take single argument, the relationship type name, and returns
-# either a hashref (if some options are set), or nothing
+# Accessor for options to be passed to each generated relationship type. takes
+# the relationship type name and optionally any attributes from the database
+# (such as FK ON DELETE/UPDATE and DEFERRABLE clauses), and returns a
+# hashref or undef if nothing is set.
+#
+# The attributes from the database override the default attributes, which in
+# turn are overridden by user supplied attributes.
sub _relationship_attrs {
- my ( $self, $reltype ) = @_;
- my $r = $self->{relationship_attrs};
+ my ( $self, $reltype, $db_attrs, $params ) = @_;
+ my $r = $self->relationship_attrs;
my %composite = (
%{ $self->_default_relationship_attrs->{$reltype} || {} },
- %{ $r->{all} || {} }
+ %{ $db_attrs || {} },
+ (
+ ref $r eq 'HASH' ? (
+ %{ $r->{all} || {} },
+ %{ $r->{$reltype} || {} },
+ )
+ :
+ ()
+ ),
);
- if( my $specific = $r->{$reltype} ) {
- while( my ($k,$v) = each %$specific ) {
- $composite{$k} = $v;
- }
+ if (ref $r eq 'CODE') {
+ $params->{attrs} = \%composite;
+
+ my %ret = %{ $r->(%$params) || {} };
+
+ %composite = %ret if %ret;
}
- return \%composite;
+
+ return %composite ? \%composite : undef;
}
-sub _array_eq {
- my ($self, $a, $b) = @_;
+sub _strip_id_postfix {
+ my ($self, $name) = @_;
- return unless @$a == @$b;
+ $name =~ s/_?(?:id|ref|cd|code|num)\z//i;
- for (my $i = 0; $i < @$a; $i++) {
- return unless $a->[$i] eq $b->[$i];
- }
- return 1;
+ return $name;
}
sub _remote_attrs {
- my ($self, $local_moniker, $local_cols) = @_;
+ my ($self, $local_moniker, $local_cols, $fk_attrs, $params) = @_;
- # get our base set of attrs from _relationship_attrs, if present
- my $attrs = $self->_relationship_attrs('belongs_to') || {};
+ # get our set of attrs from _relationship_attrs, which uses the FK attrs if available
+ my $attrs = $self->_relationship_attrs('belongs_to', $fk_attrs, $params) || {};
- # If the referring column is nullable, make 'belongs_to' an
+ # If any referring column is nullable, make 'belongs_to' an
# outer join, unless explicitly set by relationship_attrs
- my $nullable = grep { $self->{schema}->source($local_moniker)->column_info($_)->{is_nullable} } @$local_cols;
+ my $nullable = first { $self->schema->source($local_moniker)->column_info($_)->{is_nullable} } @$local_cols;
$attrs->{join_type} = 'LEFT' if $nullable && !defined $attrs->{join_type};
return $attrs;
}
+sub _sanitize_name {
+ my ($self, $name) = @_;
+
+ $name = $self->loader->_to_identifier('relationships', $name, '_');
+
+ $name =~ s/\W+/_/g; # if naming >= 8 to_identifier takes care of it
+
+ return $name;
+}
+
sub _normalize_name {
my ($self, $name) = @_;
- my @words = split_name $name;
+ $name = $self->_sanitize_name($name);
+
+ my @words = split_name $name, $self->loader->_get_naming_v('relationships');
return join '_', map lc, @words;
}
-sub _remote_relname {
+sub _local_relname {
my ($self, $remote_table, $cond) = @_;
- my $remote_relname;
+ my $local_relname;
# for single-column case, set the remote relname to the column
# name, to make filter accessors work, but strip trailing _id
if(scalar keys %{$cond} == 1) {
my ($col) = values %{$cond};
- $col = $self->_normalize_name($col);
- $col =~ s/_id$//;
- $remote_relname = $self->_inflect_singular($col);
+ $col = $self->_strip_id_postfix($self->_normalize_name($col));
+ ($local_relname) = $self->_inflect_singular($col);
}
else {
- $remote_relname = $self->_inflect_singular($self->_normalize_name($remote_table));
+ ($local_relname) = $self->_inflect_singular($self->_normalize_name($remote_table));
}
- return $remote_relname;
+ return $local_relname;
+}
+
+sub _resolve_relname_collision {
+ my ($self, $moniker, $cols, $relname) = @_;
+
+ return $relname if $relname eq 'id'; # this shouldn't happen, but just in case
+
+ my $table = $self->loader->moniker_to_table->{$moniker};
+
+ if ($self->loader->_is_result_class_method($relname, $table)) {
+ if (my $map = $self->rel_collision_map) {
+ for my $re (keys %$map) {
+ if (my @matches = $relname =~ /$re/) {
+ return sprintf $map->{$re}, @matches;
+ }
+ }
+ }
+
+ my $new_relname = $relname;
+ while ($self->loader->_is_result_class_method($new_relname, $table)) {
+ $new_relname .= '_rel'
+ }
+
+ warn <<"EOF";
+Relationship '$relname' in source '$moniker' for columns '@{[ join ',', @$cols ]}' collides with an inherited method. Renaming to '$new_relname'.
+See "RELATIONSHIP NAME COLLISIONS" in perldoc DBIx::Class::Schema::Loader::Base .
+EOF
+
+ return $new_relname;
+ }
+
+ return $relname;
}
sub generate_code {
- my ($self, $local_moniker, $rels, $uniqs) = @_;
+ my ($self, $tables) = @_;
+
+ # make a copy to destroy
+ my @tables = @$tables;
my $all_code = {};
- my $local_class = $self->{schema}->class($local_moniker);
+ while (my ($local_moniker, $rels, $uniqs) = @{ shift @tables || [] }) {
+ my $local_class = $self->schema->class($local_moniker);
+
+ my %counters;
+ foreach my $rel (@$rels) {
+ next if !$rel->{remote_source};
+ $counters{$rel->{remote_source}}++;
+ }
+
+ foreach my $rel (@$rels) {
+ my $remote_moniker = $rel->{remote_source}
+ or next;
+
+ my $remote_class = $self->schema->class($remote_moniker);
+ my $remote_obj = $self->schema->source($remote_moniker);
+ my $remote_cols = $rel->{remote_columns} || [ $remote_obj->primary_columns ];
+
+ my $local_cols = $rel->{local_columns};
+
+ if($#$local_cols != $#$remote_cols) {
+ croak "Column count mismatch: $local_moniker (@$local_cols) "
+ . "$remote_moniker (@$remote_cols)";
+ }
+
+ my %cond;
+ @cond{@$remote_cols} = @$local_cols;
+
+ my ( $local_relname, $remote_relname, $remote_method ) =
+ $self->_relnames_and_method( $local_moniker, $rel, \%cond, $uniqs, \%counters );
+ my $local_method = 'belongs_to';
+
+ ($local_relname) = $self->_rel_name_map(
+ $local_relname, $local_method,
+ $local_class, $local_moniker, $local_cols,
+ $remote_class, $remote_moniker, $remote_cols,
+ );
+ ($remote_relname) = $self->_rel_name_map(
+ $remote_relname, $remote_method,
+ $remote_class, $remote_moniker, $remote_cols,
+ $local_class, $local_moniker, $local_cols,
+ );
+
+ $local_relname = $self->_resolve_relname_collision(
+ $local_moniker, $local_cols, $local_relname,
+ );
+ $remote_relname = $self->_resolve_relname_collision(
+ $remote_moniker, $remote_cols, $remote_relname,
+ );
+
+ my $rel_attrs_params = {
+ rel_name => $local_relname,
+ rel_type => $local_method,
+ local_source => $self->schema->source($local_moniker),
+ remote_source => $self->schema->source($remote_moniker),
+ local_table => $rel->{local_table},
+ local_cols => $local_cols,
+ remote_table => $rel->{remote_table},
+ remote_cols => $remote_cols,
+ };
+
+ push @{$all_code->{$local_class}}, {
+ method => $local_method,
+ args => [
+ $local_relname,
+ $remote_class,
+ \%cond,
+ $self->_remote_attrs($local_moniker, $local_cols, $rel->{attrs}, $rel_attrs_params),
+ ],
+ extra => {
+ local_class => $local_class,
+ local_moniker => $local_moniker,
+ remote_moniker => $remote_moniker,
+ },
+ };
+
+ my %rev_cond = reverse %cond;
+ for (keys %rev_cond) {
+ $rev_cond{"foreign.$_"} = "self.".$rev_cond{$_};
+ delete $rev_cond{$_};
+ }
+
+ $rel_attrs_params = {
+ rel_name => $remote_relname,
+ rel_type => $remote_method,
+ local_source => $self->schema->source($remote_moniker),
+ remote_source => $self->schema->source($local_moniker),
+ local_table => $rel->{remote_table},
+ local_cols => $remote_cols,
+ remote_table => $rel->{local_table},
+ remote_cols => $local_cols,
+ };
+
+ push @{$all_code->{$remote_class}}, {
+ method => $remote_method,
+ args => [
+ $remote_relname,
+ $local_class,
+ \%rev_cond,
+ $self->_relationship_attrs($remote_method, {}, $rel_attrs_params),
+ ],
+ extra => {
+ local_class => $remote_class,
+ local_moniker => $remote_moniker,
+ remote_moniker => $local_moniker,
+ },
+ };
+ }
+ }
+
+ $self->_generate_m2ms($all_code);
- my %counters;
- foreach my $rel (@$rels) {
- next if !$rel->{remote_source};
- $counters{$rel->{remote_source}}++;
+ # disambiguate rels with the same name
+ foreach my $class (keys %$all_code) {
+ my $dups = $self->_duplicates($all_code->{$class});
+
+ $self->_disambiguate($all_code, $class, $dups) if $dups;
}
- foreach my $rel (@$rels) {
- my $remote_moniker = $rel->{remote_source}
- or next;
+ $self->_cleanup;
+
+ return $all_code;
+}
+
+# Find classes with only 2 FKs which are the PK and make many_to_many bridges for them.
+sub _generate_m2ms {
+ my ($self, $all_code) = @_;
+
+ LINK_CLASS:
+ foreach my $link_class (sort keys %$all_code) {
+ my @rels = grep $_->{method} eq 'belongs_to', @{$all_code->{$link_class}};
+ next unless @rels == 2;
+
+ my @class;
+ foreach my $this (0, 1) {
+ my $that = $this ? 0 : 1;
+ my %class;
+ $class[$this] = \%class;
+ $class{local_moniker} = $rels[$this]{extra}{remote_moniker};
+ $class{remote_moniker} = $rels[$that]{extra}{remote_moniker};
+
+ $class{class} = $rels[$this]{args}[1];
+
+ my %link_cols = map { $_ => 1 } apply { s/^self\.//i } values %{ $rels[$this]{args}[2] };
+
+ $class{link_table_rel} = first {
+ $_->{method} eq 'has_many'
+ and
+ $_->{args}[1] eq $link_class
+ and
+ all { $link_cols{$_} } apply { s/^foreign\.//i } keys %{$_->{args}[2]}
+ } @{ $all_code->{$class{class}} };
+
+ next LINK_CLASS unless $class{link_table_rel};
- my $remote_class = $self->{schema}->class($remote_moniker);
- my $remote_obj = $self->{schema}->source($remote_moniker);
- my $remote_cols = $rel->{remote_columns} || [ $remote_obj->primary_columns ];
+ $class{link_table_rel_name} = $class{link_table_rel}{args}[0];
- my $local_cols = $rel->{local_columns};
+ $class{link_rel} = $rels[$that]{args}[0];
- if($#$local_cols != $#$remote_cols) {
- croak "Column count mismatch: $local_moniker (@$local_cols) "
- . "$remote_moniker (@$remote_cols)";
+ $class{from_cols} = [ apply { s/^self\.//i } values %{
+ $class{link_table_rel}->{args}[2]
+ } ];
+
+ $class{to_cols} = [ apply { s/^foreign\.//i } keys %{ $rels[$that]{args}[2] } ];
+
+ $class{from_link_cols} = [ apply { s/^self\.//i } values %{ $rels[$this]{args}[2] } ];
}
- my %cond;
- foreach my $i (0 .. $#$local_cols) {
- $cond{$remote_cols->[$i]} = $local_cols->[$i];
+ my $link_moniker = $rels[0]{extra}{local_moniker};
+
+ my @link_table_cols =
+ @{[ $self->schema->source($link_moniker)->columns ]};
+
+ my @link_table_primary_cols =
+ @{[ $self->schema->source($link_moniker)->primary_columns ]};
+
+ next unless array_eq(
+ [ sort +uniq @{$class[0]{from_link_cols}}, @{$class[1]{from_link_cols}} ],
+ [ sort @link_table_primary_cols ],
+ ) && ($self->allow_extra_m2m_cols || @link_table_cols == @link_table_primary_cols);
+
+ foreach my $this (0, 1) {
+ my $that = $this ? 0 : 1;
+ ($class[$this]{m2m_relname}) = $self->_rel_name_map(
+ ($self->_inflect_plural($class[$this]{link_rel}))[0],
+ 'many_to_many',
+ @{$class[$this]}{qw(class local_moniker from_cols)},
+ $class[$that]{class},
+ @{$class[$this]}{qw(remote_moniker to_cols)},
+ {
+ link_class => $link_class,
+ link_moniker => $link_moniker,
+ link_rel_name => $class[$this]{link_table_rel_name},
+ },
+ );
+
+ $class[$this]{m2m_relname} = $self->_resolve_relname_collision(
+ @{$class[$this]}{qw(local_moniker from_cols m2m_relname)},
+ );
}
- my ( $local_relname, $remote_relname, $remote_method ) =
- $self->_relnames_and_method( $local_moniker, $rel, \%cond, $uniqs, \%counters );
+ for my $this (0, 1) {
+ my $that = $this ? 0 : 1;
+
+ push @{$all_code->{$class[$this]{class}}}, {
+ method => 'many_to_many',
+ args => [
+ @{$class[$this]}{qw(m2m_relname link_table_rel_name link_rel)},
+ $self->_relationship_attrs('many_to_many', {}, {
+ rel_type => 'many_to_many',
+ rel_name => $class[$this]{class2_relname},
+ local_source => $self->schema->source($class[$this]{local_moniker}),
+ remote_source => $self->schema->source($class[$this]{remote_moniker}),
+ local_table => $self->loader->class_to_table->{$class[$this]{class}},
+ local_cols => $class[$this]{from_cols},
+ remote_table => $self->loader->class_to_table->{$class[$that]{class}},
+ remote_cols => $class[$that]{from_cols},
+ }) || (),
+ ],
+ extra => {
+ local_class => $class[$this]{class},
+ link_class => $link_class,
+ local_moniker => $class[$this]{local_moniker},
+ remote_moniker => $class[$this]{remote_moniker},
+ },
+ };
+ }
+ }
+}
- push(@{$all_code->{$local_class}},
- { method => 'belongs_to',
- args => [ $remote_relname,
- $remote_class,
- \%cond,
- $self->_remote_attrs($local_moniker, $local_cols),
- ],
- }
- );
+sub _duplicates {
+ my ($self, $rels) = @_;
+
+ my @rels = map [ $_->{args}[0] => $_ ], @$rels;
+ my %rel_names;
+ $rel_names{$_}++ foreach map $_->[0], @rels;
+
+ my @dups = grep $rel_names{$_} > 1, keys %rel_names;
+
+ my %dups;
+
+ foreach my $dup (@dups) {
+ $dups{$dup} = [ map $_->[1], grep { $_->[0] eq $dup } @rels ];
+ }
- my %rev_cond = reverse %cond;
- for (keys %rev_cond) {
- $rev_cond{"foreign.$_"} = "self.".$rev_cond{$_};
- delete $rev_cond{$_};
+ return if not %dups;
+
+ return \%dups;
+}
+
+sub _tagger {
+ my $self = shift;
+
+ $self->__tagger(Lingua::EN::Tagger->new) unless $self->__tagger;
+
+ return $self->__tagger;
+}
+
+sub _adjectives {
+ my ($self, @cols) = @_;
+
+ my @adjectives;
+
+ foreach my $col (@cols) {
+ my @words = split_name $col;
+
+ my $tagged = $self->_tagger->get_readable(join ' ', @words);
+
+ push @adjectives, $tagged =~ m{\G(\w+)/JJ\s+}g;
+ }
+
+ return @adjectives;
+}
+
+sub _name_to_identifier {
+ my ($self, $name) = @_;
+
+ my $to_identifier = $self->loader->naming->{force_ascii} ?
+ \&String::ToIdentifier::EN::to_identifier
+ : \&String::ToIdentifier::EN::Unicode::to_identifier;
+
+ return join '_', map lc, split_name $to_identifier->($name, '_');
+}
+
+sub _disambiguate {
+ my ($self, $all_code, $in_class, $dups) = @_;
+
+ DUP: foreach my $dup (keys %$dups) {
+ my @rels = @{ $dups->{$dup} };
+
+ # Check if there are rels to the same table name in different
+ # schemas/databases, if so qualify them.
+ my @tables = map $self->loader->moniker_to_table->{$_->{extra}{remote_moniker}},
+ @rels;
+
+ # databases are different, prepend database
+ if ($tables[0]->can('database') && (uniq map $_->database||'', @tables) > 1) {
+ # If any rels are in the same database, we have to distinguish by
+ # both schema and database.
+ my %db_counts;
+ $db_counts{$_}++ for map $_->database, @tables;
+ my $use_schema = any { $_ > 1 } values %db_counts;
+
+ foreach my $i (0..$#rels) {
+ my $rel = $rels[$i];
+ my $table = $tables[$i];
+
+ $rel->{args}[0] = $self->_name_to_identifier($table->database)
+ . ($use_schema ? ('_' . $self->name_to_identifier($table->schema)) : '')
+ . '_' . $rel->{args}[0];
+ }
+ next DUP;
+ }
+ # schemas are different, prepend schema
+ elsif ((uniq map $_->schema||'', @tables) > 1) {
+ foreach my $i (0..$#rels) {
+ my $rel = $rels[$i];
+ my $table = $tables[$i];
+
+ $rel->{args}[0] = $self->_name_to_identifier($table->schema)
+ . '_' . $rel->{args}[0];
+ }
+ next DUP;
}
- push(@{$all_code->{$remote_class}},
- { method => $remote_method,
- args => [ $local_relname,
- $local_class,
- \%rev_cond,
- $self->_relationship_attrs($remote_method),
- ],
+ foreach my $rel (@rels) {
+ next if $rel->{method} =~ /^(?:belongs_to|many_to_many)\z/;
+
+ my @to_cols = apply { s/^foreign\.//i }
+ keys %{ $rel->{args}[2] };
+
+ my @adjectives = $self->_adjectives(@to_cols);
+
+ # If there are no adjectives, and there is only one might_have
+ # rel to that class, we hardcode 'active'.
+
+ my $to_class = $rel->{args}[1];
+
+ if ((not @adjectives)
+ && (grep { $_->{method} eq 'might_have'
+ && $_->{args}[1] eq $to_class } @{ $all_code->{$in_class} }) == 1) {
+
+ @adjectives = 'active';
}
- );
+
+ if (@adjectives) {
+ my $rel_name = join '_', sort(@adjectives), $rel->{args}[0];
+
+ ($rel_name) = $rel->{method} eq 'might_have' ?
+ $self->_inflect_singular($rel_name)
+ :
+ $self->_inflect_plural($rel_name);
+
+ my ($local_class, $local_moniker, $remote_moniker)
+ = @{ $rel->{extra} }
+ {qw/local_class local_moniker remote_moniker/};
+
+ my @from_cols = apply { s/^self\.//i }
+ values %{ $rel->{args}[2] };
+
+ ($rel_name) = $self->_rel_name_map($rel_name, $rel->{method}, $local_class, $local_moniker, \@from_cols, $to_class, $remote_moniker, \@to_cols);
+
+ $rel_name = $self->_resolve_relname_collision($local_moniker, \@from_cols, $rel_name);
+
+ $rel->{args}[0] = $rel_name;
+ }
+ }
}
- return $all_code;
+ # Check again for duplicates, since the heuristics above may not have resolved them all.
+
+ if ($dups = $self->_duplicates($all_code->{$in_class})) {
+ foreach my $dup (keys %$dups) {
+ # sort by method
+ my @rels = map $_->[1], sort { $a->[0] <=> $b->[0] } map [
+ {
+ belongs_to => 3,
+ has_many => 2,
+ might_have => 1,
+ many_to_many => 0,
+ }->{$_->{method}}, $_
+ ], @{ $dups->{$dup} };
+
+ my $rel_num = 2;
+
+ foreach my $rel (@rels[1 .. $#rels]) {
+ my $inflect_type = $rel->{method} =~ /^(?:many_to_many|has_many)\z/ ?
+ 'inflect_plural'
+ :
+ 'inflect_singular';
+
+ my $inflect_method = "_$inflect_type";
+
+ my $relname_new_uninflected = $rel->{args}[0] . "_$rel_num";
+
+ $rel_num++;
+
+ my ($local_class, $local_moniker, $remote_moniker)
+ = @{ $rel->{extra} }
+ {qw/local_class local_moniker remote_moniker/};
+
+ my (@from_cols, @to_cols, $to_class);
+
+ if ($rel->{method} eq 'many_to_many') {
+ @from_cols = apply { s/^self\.//i } values %{
+ (first { $_->{args}[0] eq $rel->{args}[1] } @{ $all_code->{$local_class} })
+ ->{args}[2]
+ };
+ @to_cols = apply { s/^foreign\.//i } keys %{
+ (first { $_->{args}[0] eq $rel->{args}[2] }
+ @{ $all_code->{ $rel->{extra}{link_class} } })
+ ->{args}[2]
+ };
+ $to_class = $self->schema->source($remote_moniker)->result_class;
+ }
+ else {
+ @from_cols = apply { s/^self\.//i } values %{ $rel->{args}[2] };
+ @to_cols = apply { s/^foreign\.//i } keys %{ $rel->{args}[2] };
+ $to_class = $rel->{args}[1];
+ }
+
+ my ($relname_new, $inflect_mapped) =
+ $self->$inflect_method($relname_new_uninflected);
+
+ my $rel_name_mapped;
+
+ ($relname_new, $rel_name_mapped) = $self->_rel_name_map($relname_new, $rel->{method}, $local_class, $local_moniker, \@from_cols, $to_class, $remote_moniker, \@to_cols);
+
+ my $mapped = $inflect_mapped || $rel_name_mapped;
+
+ warn <<"EOF" unless $mapped;
+Could not find a proper name for relationship '$relname_new' in source
+'$local_moniker' for columns '@{[ join ',', @from_cols ]}'. Supply a value in
+'$inflect_type' for '$relname_new_uninflected' or 'rel_name_map' for
+'$relname_new' to name this relationship.
+EOF
+
+ $relname_new = $self->_resolve_relname_collision($local_moniker, \@from_cols, $relname_new);
+
+ $rel->{args}[0] = $relname_new;
+ }
+ }
+ }
}
sub _relnames_and_method {
my ( $self, $local_moniker, $rel, $cond, $uniqs, $counters ) = @_;
- my $remote_moniker = $rel->{remote_source};
- my $remote_obj = $self->{schema}->source( $remote_moniker );
- my $remote_class = $self->{schema}->class( $remote_moniker );
- my $remote_relname = $self->_remote_relname( $remote_obj->from, $cond);
+ my $remote_moniker = $rel->{remote_source};
+ my $remote_obj = $self->schema->source( $remote_moniker );
+ my $remote_class = $self->schema->class( $remote_moniker );
+ my $local_relname = $self->_local_relname( $rel->{remote_table}, $cond);
- my $local_cols = $rel->{local_columns};
- my $local_table = $self->{schema}->source($local_moniker)->from;
+ my $local_cols = $rel->{local_columns};
+ my $local_table = $rel->{local_table};
+ my $local_class = $self->schema->class($local_moniker);
+ my $local_source = $self->schema->source($local_moniker);
- # If more than one rel between this pair of tables, use the local
- # col names to distinguish
- my ($local_relname, $local_relname_uninflected);
- if ( $counters->{$remote_moniker} > 1) {
- my $colnames = q{_} . $self->_normalize_name(join '_', @$local_cols);
- $remote_relname .= $colnames if keys %$cond > 1;
-
- $local_relname = $self->_normalize_name($local_table . $colnames);
- $local_relname =~ s/_id$//;
-
- $local_relname_uninflected = $local_relname;
- $local_relname = $self->_inflect_plural($local_relname);
- } else {
- $local_relname_uninflected = $self->_normalize_name($local_table);
- $local_relname = $self->_inflect_plural($self->_normalize_name($local_table));
- }
+ my $remote_relname_uninflected = $self->_normalize_name($local_table);
+ my ($remote_relname) = $self->_inflect_plural($self->_normalize_name($local_table));
my $remote_method = 'has_many';
# If the local columns have a UNIQUE constraint, this is a one-to-one rel
- my $local_source = $self->{schema}->source($local_moniker);
- if ($self->_array_eq([ $local_source->primary_columns ], $local_cols) ||
- grep { $self->_array_eq($_->[1], $local_cols) } @$uniqs) {
- $remote_method = 'might_have';
- $local_relname = $self->_inflect_singular($local_relname_uninflected);
+ if (array_eq([ $local_source->primary_columns ], $local_cols) ||
+ first { array_eq($_->[1], $local_cols) } @$uniqs) {
+ $remote_method = 'might_have';
+ ($remote_relname) = $self->_inflect_singular($remote_relname_uninflected);
+ }
+
+ # If more than one rel between this pair of tables, use the local
+ # col names to distinguish, unless the rel was created previously.
+ if ($counters->{$remote_moniker} > 1) {
+ my $relationship_exists = 0;
+
+ if (-f (my $existing_remote_file = $self->loader->get_dump_filename($remote_class))) {
+ my $class = "${remote_class}Temporary";
+
+ if (not Class::Inspector->loaded($class)) {
+ my $code = slurp_file $existing_remote_file;
+
+ $code =~ s/(?<=package $remote_class)/Temporary/g;
+
+ $code =~ s/__PACKAGE__->meta->make_immutable[^;]*;//g;
+
+ eval $code;
+ die $@ if $@;
+
+ push @{ $self->_temp_classes }, $class;
+ }
+
+ if ($class->has_relationship($remote_relname)) {
+ my $rel_cols = [ sort { $a cmp $b } apply { s/^foreign\.//i }
+ (keys %{ $class->relationship_info($remote_relname)->{cond} }) ];
+
+ $relationship_exists = 1 if array_eq([ sort @$local_cols ], $rel_cols);
+ }
+ }
+
+ if (not $relationship_exists) {
+ my $colnames = q{_} . $self->_normalize_name(join '_', @$local_cols);
+ $local_relname .= $colnames if keys %$cond > 1;
+
+ $remote_relname = $self->_strip_id_postfix($self->_normalize_name($local_table . $colnames));
+
+ $remote_relname_uninflected = $remote_relname;
+ ($remote_relname) = $self->_inflect_plural($remote_relname);
+
+ # if colnames were added and this is a might_have, re-inflect
+ if ($remote_method eq 'might_have') {
+ ($remote_relname) = $self->_inflect_singular($remote_relname_uninflected);
+ }
+ }
+ }
+
+ return ($local_relname, $remote_relname, $remote_method);
+}
+
+sub _rel_name_map {
+ my ($self, $relname, $method, $local_class, $local_moniker, $local_cols,
+ $remote_class, $remote_moniker, $remote_cols, $extra) = @_;
+
+ my $info = {
+ %{$extra || {}},
+ name => $relname,
+ type => $method,
+ local_class => $local_class,
+ local_moniker => $local_moniker,
+ local_columns => $local_cols,
+ remote_class => $remote_class,
+ remote_moniker => $remote_moniker,
+ remote_columns => $remote_cols,
+ };
+
+ $self->_run_user_map($self->rel_name_map, $info);
+}
+
+sub _run_user_map {
+ my ($self, $map, $info) = @_;
+
+ my $new_name = $info->{name};
+ my $mapped = 0;
+
+ if ('HASH' eq ref($map)) {
+ my $name = $info->{name};
+ my $moniker = $info->{local_moniker};
+ if ($map->{$moniker} and 'HASH' eq ref($map->{$moniker})
+ and $map->{$moniker}{$name}
+ ) {
+ $new_name = $map->{$moniker}{$name};
+ $mapped = 1;
+ }
+ elsif ($map->{$name} and not 'HASH' eq ref($map->{$name})) {
+ $new_name = $map->{$name};
+ $mapped = 1;
+ }
+ }
+ elsif ('CODE' eq ref($map)) {
+ my $cb = sub {
+ my ($cb_map) = @_;
+ croak "reentered rel_name_map must be a hashref"
+ unless 'HASH' eq ref($cb_map);
+ my ($cb_name, $cb_mapped) = $self->_run_user_map($cb_map, $info);
+ return $cb_mapped && $cb_name;
+ };
+ my $name = $map->($info, $cb);
+ if ($name) {
+ $new_name = $name;
+ $mapped = 1;
+ }
+ }
+
+ return ($new_name, $mapped);
+}
+
+sub _cleanup {
+ my $self = shift;
+
+ for my $class (@{ $self->_temp_classes }) {
+ Class::Unload->unload($class);
}
- return ( $local_relname, $remote_relname, $remote_method );
+ $self->_temp_classes([]);
}
-=head1 AUTHOR
+=head1 AUTHORS
-See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
+See L<DBIx::Class::Schema::Loader/AUTHORS>.
=head1 LICENSE
projects / dbsrgits/DBIx-Class-Schema-Loader.git / blobdiff