use warnings;
use NEXT;
+use base qw/Class::Data::Inheritable/;
+
+__PACKAGE__->mk_classdata('_transform_sql_handler_order'
+ => [ qw/TABLE ESSENTIAL JOIN/ ] );
+
+__PACKAGE__->mk_classdata('_transform_sql_handlers' =>
+ {
+ 'TABLE' =>
+ sub {
+ my ($self, $class, $data) = @_;
+ return $class->_table_name unless $data;
+ my ($f_class, $alias) = split(/=/, $data);
+ $f_class ||= $class;
+ $self->{_aliases}{$alias} = $f_class;
+ return $f_class->_table_name." ${alias}";
+ },
+ 'ESSENTIAL' =>
+ sub {
+ my ($self, $class, $data) = @_;
+ return join(' ', $class->columns('Essential')) unless $data;
+ return join(' ', $self->{_aliases}{$data}->columns('Essential'));
+ },
+ 'JOIN' =>
+ sub {
+ my ($self, $class, $data) = @_;
+ my ($from, $to) = split(/ /, $data);
+ my ($from_class, $to_class) = @{$self->{_aliases}}{$from, $to};
+ my ($rel_obj) = grep { $_->{class} && $_->{class} eq $to_class }
+ values %{ $from_class->_relationships };
+ unless ($rel_obj) {
+ ($from, $to) = ($to, $from);
+ ($from_class, $to_class) = ($to_class, $from_class);
+ ($rel_obj) = grep { $_->{class} && $_->{class} eq $to_class }
+ values %{ $from_class->_relationships };
+ }
+ $self->throw( "No relationship to JOIN from ${from_class} to ${to_class}" )
+ unless $rel_obj;
+ my $attrs = {
+ _aliases => { self => $from, foreign => $to },
+ _action => 'join',
+ };
+ my $join = $from_class->_cond_resolve($rel_obj->{cond}, $attrs);
+ return $join;
+ }
+
+ } );
sub db_Main {
return $_[0]->_get_dbh;
sub transform_sql {
my ($class, $sql, @args) = @_;
my $table = $class->_table_name;
- $sql =~ s/__TABLE__/$table/g;
- $sql =~ s/__ESSENTIAL__/join(' ', $class->columns('Essential'))/eg;
+ my $attrs = { };
+ foreach my $key (@{$class->_transform_sql_handler_order}) {
+ my $h = $class->_transform_sql_handlers->{$key};
+ $sql =~ s/__$key(?:\(([^\)]+)\))?__/$h->($attrs, $class, $1)/eg;
+ }
return sprintf($sql, @args);
}