package SQL::Translator::Producer::ClassDBI;
# -------------------------------------------------------------------
-# $Id: ClassDBI.pm,v 1.8 2003-06-09 01:55:12 kycl4rk Exp $
+# $Id: ClassDBI.pm,v 1.9 2003-06-09 03:20:16 allenday Exp $
# -------------------------------------------------------------------
# Copyright (C) 2003 Ying Zhang <zyolive@yahoo.com>,
# Allen Day <allenday@ucla.edu>,
use strict;
use vars qw[ $VERSION $DEBUG ];
-$VERSION = sprintf "%d.%02d", q$Revision: 1.8 $ =~ /(\d+)\.(\d+)/;
+$VERSION = sprintf "%d.%02d", q$Revision: 1.9 $ =~ /(\d+)\.(\d+)/;
$DEBUG = 1 unless defined $DEBUG;
use SQL::Translator::Schema::Constants;
local $DEBUG = $translator->debug;
my $no_comments = $translator->no_comments;
my $schema = $translator->schema;
-
+
my $create;
$create .= header_comment(__PACKAGE__, "# ") unless ($no_comments);
-
+
$create .= "package " . $translator->format_package_name('DBI'). ";\n\n";
-
+
$create .= "my \$USER = '';\n";
$create .= "my \$PASS = '';\n\n";
-
+
my $from = _from($translator->parser_type());
-
+
$create .= "use base 'Class::DBI::$from';\n\n" .
$translator->format_package_name('DBI') .
"->set_db('Main', 'dbi:$from:_', \$USER, \$PASS);\n\n";
-
+
+
+ #
+ # Identify link tables, defined as tables that have only PK and FK
+ # fields
+ #
+ my %linkable;
+ foreach my $table ($schema->get_tables) {
+ my $is_link = 1;
+ foreach my $field ($table->get_fields){
+ $is_link = 0 and last unless $field->is_primary_key or $field->is_foreign_key;
+ }
+
+ if($is_link){
+ foreach my $left ($table->get_fields){
+ next unless $left->is_foreign_key;
+ foreach my $right ($table->get_fields){
+ next unless $right->is_foreign_key;
+
+ $linkable{$left->foreign_key_reference->reference_table}
+ {$right->foreign_key_reference->reference_table} = $table;
+ $linkable{$right->foreign_key_reference->reference_table}
+ {$left->foreign_key_reference->reference_table} = $table;
+ }
+ }
+ }
+
+ }
+
#
# Iterate over all tables
#
my %pk;
unless ( $no_comments ) {
- $create .=
+ $create .=
"#\n# Package: " .
- $translator->format_package_name($table_name).
- "\n#\n"
+ $translator->format_package_name($table_name).
+ "\n#\n"
}
- $create .= "package ".
- $translator->format_package_name($table_name). ";\n";
+ $create .= "package ".$translator->format_package_name($table_name).";\n";
+ $create .= "use base ".$translator->format_package_name('DBI').";\n";
$create .= "use mixin 'Class::DBI::Join';\n";
$create .= "use Class::DBI::Pager;\n\n";
-
- $create .= $translator->format_package_name($table_name).
- "->set_up_table('$table_name');\n\n";
-
+
+ $create .= $translator->format_package_name($table_name)."->set_up_table('$table_name');\n\n";
+
#
# Primary key?
#
foreach my $constraint ( $table->get_constraints ) {
next unless $constraint->type eq PRIMARY_KEY;
my $field = ($constraint->fields)[0];
-
+
$pk{ $table_name } = $field;
$create .= "sub " .$translator->format_pk_name(
$translator->format_package_name( $table_name ),
$field
) . " { shift->".$field." }\n\n";
}
-
+
#
# Find foreign keys
#
" {\n return shift->$field_name\n}\n\n";
}
}
+
+ my $is_data = 0;
+ map {(!$_->is_foreign_key and !$_->is_primary_key) ? $is_data++ : 0} $table->get_fields;
+ if($is_data){
+ my %linked;
+ foreach my $field ( $table->get_fields ) {
+ if($field->is_foreign_key){
+ my $fk = $field->foreign_key_reference;
+
+# next if $linked{($fk->reference_fields)[0]};
+ next unless $linkable{$fk->reference_table};
+
+ foreach my $link (keys %{$linkable{$fk->reference_table}}){
+ my $linkmethodname = "_".$translator->format_fk_name($fk->reference_table,$field->name)."_refs";
+
+ next if $linked{$linkmethodname};
+
+ $create .= $translator->format_package_name($table_name).
+ "->has_many('$linkmethodname','".
+ $translator->format_package_name($linkable{$fk->reference_table}{$link}->name)."','".
+ ($fk->reference_fields)[0]."');\n";
+ $create .= "sub ". $translator->format_fk_name($fk->reference_table,$field->name).
+####HARDCODED S HERE. ADD CALLBACK FOR PLURALIZATION MANGLING
+ "s {\n my \$self = shift; return map \$_->".($fk->reference_fields)[0].", \$self->".$linkmethodname.";\n}\n\n";
+
+ $linked{$linkmethodname}++;
+ }
+ }
+ }
+ }
+
}
$create .= '1;';
# my $table_data = $data->{$table};
# my @fields = keys %{$table_data->{'fields'}};
# my %pk;
-#
+#
# $create .= "##\n## Package: " .$translator->format_package_name($table). "\n##\n" unless $no_comments;
# $create .= "package ". $translator->format_package_name($table). ";\n";
-#
+#
# $create .= "use base \'Chado::DBI\';\n";
# $create .= "use mixin \'Class::DBI::Join\';\n";
# $create .= "use Class::DBI::Pager;\n\n";
-#
+#
# $create .= $translator->format_package_name($table). "->set_up_table('$table');\n\n";
-#
+#
# #
# # Primary key?
# #
# my $type = $constraint->{'type'};
# my $ref_table = $constraint->{'reference_table'};
# my $ref_fields = $constraint->{'reference_fields'};
-#
+#
# if ( $type eq 'primary_key') {
# $pk{$table} = $constraint->{'fields'}->[0];
# $create .= "sub " .$translator->format_pk_name(
# ) . " { shift->".$constraint->{'fields'}->[0]." }\n\n";
# }
# }
-#
+#
# #
# # Foreign key?
# #
# my $ref_table = $field_data->[1]->{'reference_table'};
# my $ref_field = $field_data->[1]->{'reference_fields'}->[0];
# my $field = $field_data->[1]->{'fields'}->[0];
-#
+#
# if ($type eq 'foreign_key') {
-#
+#
# #THIS IS IMPOSSIBLE UNTIL WE HAVE A BETTER DATA MODEL. THIS GIANT HASH SUCKS !!!
# # my $r_link = 0; #not a link table (yet)
# # my $r_linkthis = 0;
# # foreach my $r_field ( keys %{$r_table->{'fields'}} ){
# # $r_linkthis++ and next if $r_field eq $ref_field; #remote table links to local table
# # if($r_table->{'fields'}->{$r_field}->{'constraints'}){
-#
+#
# # foreach my $r_constraint ($r_table->{'fields'}->{$r_field}->{'constraints'}){
# # $create .= Dumper($r_constraint);
# # }
-#
+#
# # } else {
# # $r_linkdata++; #if not constraints, assume it's data (safe?)
# # }
# # foreach my $r_constraint ( @{ $r_table->{'fields'}->{$r_field}->{'constraints'} } ) {
# # next unless $r_constraint->{'constraint_type'} eq 'foreign_key';
-#
+#
# # $r_linkthat++ unless $r_constraint->{'reference_table'} eq $table; #remote table links to non-local table
# # }
# # }
-#
+#
# # my $link = $r_linkthis && $r_linkthat && !$r_linkdata ? '_link' : '';
# $create .= $translator->format_package_name($table). "->hasa(" .$translator->format_package_name($ref_table). " => \'$field\');\n";
# $create .= "sub " .$translator->format_fk_name($ref_table, $field)." { return shift->$field }\n\n";
# }
# }
-#
+#
# #THIS IS IMPOSSIBLE UNTIL WE HAVE A BETTER DATA MODEL. THIS GIANT HASH SUCKS !!!
# # #
# # # Remote foreign key?
# # next if $remote_table eq $table;
# # # print "********".$remote_table."\n";
# # my $remote_table_data = $data->{$remote_table};
-#
+#
# # foreach my $remote_field ( keys %{$remote_table_data->{'fields'}} ){
# # foreach my $remote_constraint ( @{ $remote_table_data->{'fields'}->{$remote_field}->{'constraints'} } ) {
# # next unless $remote_constraint->{'constraint_type'} eq 'foreign_key'; #only interested in foreign keys...
-#
+#
# # $refers{$remote_table} = 1 if $pk{$remote_constraint->{'reference_table'}} ;#eq $remote_constraint->{'reference_fields'}->[0];
# # }
# # }
# # }
-#
+#
# # foreach my $refer (keys %refers){
# # foreach my $refer_field ( keys %{$data->{$refer}->{'fields'}} ){
# # foreach my $refer_constraint ( @{ $data->{$refer}->{'fields'}->{$refer_field}->{'constraints'} } ) {
# # next unless $refer_constraint->{'constraint_type'} eq 'foreign_key'; #only interested in foreign keys...
# # next if $refer_constraint->{'reference_table'} eq $table; #don't want to consider the current table vs itself
# # print "********".$refer."\t".$refer_field."\t****\t".$refer_constraint->{'reference_table'}."\t".$refer_constraint->{'reference_fields'}->[0]."\n";
-#
+#
# # $create .= "****sub " .$translator->format_fk_name($refer_constraint->{'reference_table'}, $refer_constraint->{'reference_fields'}->[0]). " { return shift->".$refer_constraint->{'reference_fields'}->[0]." }\n\n";
# # }
# # }
# # }
-#
+#
# $create .= "1;\n\n\n";
# }
-
+
return $create;
}
my $from = shift;
my @temp = split(/::/, $from);
$from = $temp[$#temp];
-
+
if ( $from eq 'MySQL') {
$from = lc($from);
} elsif ( $from eq 'PostgreSQL') {
} else {
die "__PACKAGE__ can't handle vendor $from";
}
-
+
return $from;
}
projects / dbsrgits/SQL-Translator.git / commitdiff