X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FOracle%2FWhereJoins.pm;h=d4e73852627770e69e8329a8cebb197fe19de1e6;hb=6f4ddea126a20d67bc599a804d097ed8d3c086aa;hp=730c73b7339fa8c45d0ce3ef6f4dd2cff15671b9;hpb=0821ae59c74c48a248c5c441956dfdcfa7bf7268;p=dbsrgits%2FDBIx-Class.git diff --git a/lib/DBIx/Class/Storage/DBI/Oracle/WhereJoins.pm b/lib/DBIx/Class/Storage/DBI/Oracle/WhereJoins.pm index 730c73b..d4e7385 100644 --- a/lib/DBIx/Class/Storage/DBI/Oracle/WhereJoins.pm +++ b/lib/DBIx/Class/Storage/DBI/Oracle/WhereJoins.pm @@ -5,94 +5,7 @@ use base qw( DBIx::Class::Storage::DBI::Oracle::Generic ); use strict; use warnings; -__PACKAGE__->sql_maker_class('DBIC::SQL::Abstract::Oracle'); - -BEGIN { - package # Hide from PAUSE - DBIC::SQL::Abstract::Oracle; - - use base qw( DBIC::SQL::Abstract ); - - sub select { - my ($self, $table, $fields, $where, $order, @rest) = @_; - - if (ref($table) eq 'ARRAY') { - $where = $self->_oracle_joins($where, @{ $table }); - } - - return $self->SUPER::select($table, $fields, $where, $order, @rest); - } - - sub _recurse_from { - my ($self, $from, @join) = @_; - - my @sqlf = $self->_make_as($from); - - foreach my $j (@join) { - my ($to, $on) = @{ $j }; - - if (ref $to eq 'ARRAY') { - push (@sqlf, $self->_recurse_from(@{ $to })); - } - else { - push (@sqlf, $self->_make_as($to)); - } - } - - return join q{, }, @sqlf; - } - - sub _oracle_joins { - my ($self, $where, $from, @join) = @_; - my $join_where = {}; - $self->_recurse_oracle_joins($join_where, $from, @join); - if (keys %$join_where) { - if (!defined($where)) { - $where = $join_where; - } else { - if (ref($where) eq 'ARRAY') { - $where = { -or => $where }; - } - $where = { -and => [ $join_where, $where ] }; - } - } - return $where; - } - - sub _recurse_oracle_joins { - my ($self, $where, $from, @join) = @_; - - foreach my $j (@join) { - my ($to, $on) = @{ $j }; - - if (ref $to eq 'ARRAY') { - $self->_recurse_oracle_joins($where, @{ $to }); - } - - my $to_jt = ref $to eq 'ARRAY' ? $to->[0] : $to; - my $left_join = q{}; - my $right_join = q{}; - - if (ref $to_jt eq 'HASH' and exists $to_jt->{-join_type}) { - #TODO: Support full outer joins -- this would happen much earlier in - #the sequence since oracle 8's full outer join syntax is best - #described as INSANE. - die "Can't handle full outer joins in Oracle 8 yet!\n" - if $to_jt->{-join_type} =~ /full/i; - - $left_join = q{(+)} if $to_jt->{-join_type} =~ /left/i - && $to_jt->{-join_type} !~ /inner/i; - - $right_join = q{(+)} if $to_jt->{-join_type} =~ /right/i - && $to_jt->{-join_type} !~ /inner/i; - } - - foreach my $lhs (keys %{ $on }) { - $where->{$lhs . $left_join} = \"= $on->{ $lhs }$right_join"; - } - } - } -} +__PACKAGE__->sql_maker_class('DBIx::Class::SQLAHacks::OracleJoins'); 1; @@ -135,33 +48,7 @@ it's already too late. =head1 METHODS -This module replaces a subroutine contained in DBIC::SQL::Abstract: - -=over - -=item sql_maker - -=back - -It also creates a new module in its BEGIN { } block called -DBIC::SQL::Abstract::Oracle which has the following methods: - -=over - -=item select ($\@$;$$@) - -Replaces DBIC::SQL::Abstract's select() method, which calls _oracle_joins() -to modify the column and table list before calling SUPER::select(). - -=item _recurse_from ($$\@) - -Recursive subroutine that builds the table list. - -=item _oracle_joins ($$$@) - -Creates the left/right relationship in the where query. - -=back +See L for implementation details. =head1 BUGS @@ -172,7 +59,9 @@ Probably lots more. =over -=item L +=item L + +=item L =item L