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package DBIx::Model; |
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20511
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use strict; |
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use warnings; |
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use DBIx::Model::DB; |
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948
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our $VERSION = '0.0.1_2'; |
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my %columns; |
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my %forward; |
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my %backward; |
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sub DBI::db::model { |
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my $dbh = shift; |
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my $catalog = shift; |
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my $schema = shift; |
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my $names = shift // '%'; |
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my $type = shift // 'TABLE,VIEW'; |
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my $db = DBIx::Model::DB->new( |
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name => $dbh->{Name}, |
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catalog => $catalog, |
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schema => $schema, |
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table_types => $type, |
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); |
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my @raw_fk; |
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my $t_sth = |
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$dbh->table_info( $db->catalog, $db->schema, $names, $db->table_types ); |
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my $trefs = $t_sth->fetchall_hashref('TABLE_NAME'); |
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foreach my $tname ( sort keys %$trefs ) { |
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my $table = $db->add_table( |
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name => $tname, |
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type => $trefs->{$tname}->{TABLE_TYPE} |
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); |
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my @primary = $dbh->primary_key( $db->catalog, $db->schema, $tname ); |
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my $c_sth = $dbh->column_info( $db->catalog, $db->schema, $tname, '%' ); |
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while ( my $c_ref = $c_sth->fetchrow_hashref ) { |
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my $pri = grep { $c_ref->{COLUMN_NAME} eq $_ } @primary; |
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$table->add_column( |
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name => $c_ref->{COLUMN_NAME}, |
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nullable => $c_ref->{NULLABLE}, |
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size => $c_ref->{COLUMN_SIZE}, |
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type => $c_ref->{TYPE_NAME} || '*UNKNOWN*', |
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primary => $pri ? 1 : 0, |
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); |
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} |
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my $fk_sth = |
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$dbh->foreign_key_info( $db->catalog, $db->schema, undef, |
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$db->catalog, $db->schema, $tname ); |
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my @x; |
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while ( my $fk_ref = $fk_sth->fetchrow_hashref ) { |
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next unless defined $fk_ref->{PKCOLUMN_NAME}; # mysql? |
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if ( $fk_ref->{KEY_SEQ} == 1 ) { |
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if (@x) { |
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push( @raw_fk, [@x] ); |
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} |
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@x = ( |
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lc $tname, |
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lc $fk_ref->{PKTABLE_NAME}, |
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[ |
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lc $fk_ref->{FKCOLUMN_NAME}, lc $fk_ref->{PKCOLUMN_NAME} |
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] |
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); |
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} |
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else { |
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push( |
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@x, |
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[ |
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lc $fk_ref->{FKCOLUMN_NAME}, lc $fk_ref->{PKCOLUMN_NAME} |
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] |
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); |
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} |
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} |
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if (@x) { |
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push( @raw_fk, [@x] ); |
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} |
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} |
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foreach my $fk (@raw_fk) { |
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my ($from) = |
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grep { $_->name_lc eq $fk->[0] } $db->tables; |
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my ($to) = grep { $_->name_lc eq $fk->[1] } $db->tables; |
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shift @$fk; |
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shift @$fk; |
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my @from; |
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my @to; |
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foreach my $pair (@$fk) { |
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push( @from, grep { $_->name_lc eq $pair->[0] } $from->columns ); |
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push( @to, grep { $_->name_lc eq $pair->[1] } $to->columns ); |
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} |
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$from->add_foreign_key( |
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to_table => $to, |
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columns => \@from, |
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to_columns => \@to, |
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); |
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map { $columns{ $_->full_name_lc } = $_ } @from, @to; |
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map { |
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$forward{ $to[$_]->full_name_lc }->{ $from[$_]->full_name_lc }++; |
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$backward{ $from[$_]->full_name_lc }->{ $to[$_]->full_name_lc }++; |
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} 0 .. ( ( scalar @from ) - 1 ); |
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} |
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my $chain = 1; |
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while ( my $key = ( sort keys %forward, keys %backward )[0] ) { |
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chainer( $key, $chain++ ); |
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} |
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$db->chains( $chain - 1 ); |
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%columns = %forward = %backward = (); |
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return $db; |
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} |
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sub chainer { |
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my $key = shift; |
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my $chain = shift; |
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$columns{$key}->chain($chain); |
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if ( my $val = delete $forward{$key} ) { |
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foreach my $new ( sort keys %$val ) { |
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chainer( $new, $chain ); |
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} |
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} |
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if ( my $val = delete $backward{$key} ) { |
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foreach my $new ( sort keys %$val ) { |
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chainer( $new, $chain ); |
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} |
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} |
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} |
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1; |
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__END__ |