fixed multi-fk checking for postgres (misdetection of multiple single-fks on one...

[dbsrgits/DBIx-Class-Schema-Loader.git] / lib / DBIx / Class / Schema / Loader / DB2.pm

diff --git a/lib/DBIx/Class/Schema/Loader/DB2.pm b/lib/DBIx/Class/Schema/Loader/DB2.pm
index 49153a9..3c458c9 100644 (file)
--- a/lib/DBIx/Class/Schema/Loader/DB2.pm
+++ b/lib/DBIx/Class/Schema/Loader/DB2.pm
@@ -2,7 +2,6 @@ package DBIx::Class::Schema::Loader::DB2;
 
 use strict;
 use base 'DBIx::Class::Schema::Loader::Generic';
-use DBI;
 use Carp;
 
 =head1 NAME
@@ -15,12 +14,11 @@ DBIx::Class::Schema::Loader::DB2 - DBIx::Class::Schema::Loader DB2 Implementatio
 
   # $loader is a DBIx::Class::Schema::Loader::DB2
   my $loader = DBIx::Class::Schema::Loader->new(
-    dsn       => "dbi:DB2:dbname",
-    user      => "myuser",
-    password  => "",
-    namespace => "Data",
-    schema    => "MYSCHEMA",
-    dropschema  => 0,
+    dsn         => "dbi:DB2:dbname",
+    user        => "myuser",
+    password    => "",
+    db_schema   => "MYSCHEMA",
+    drop_schema => 1,
   );
 
 =head1 DESCRIPTION
@@ -29,15 +27,16 @@ See L<DBIx::Class::Schema::Loader>.
 
 =cut
 
-sub _db_classes {
-   return ();
+sub _loader_db_classes {
+    return qw/DBIx::Class::PK::Auto::DB2/;
 }
 
-sub _tables {
+sub _loader_tables {
     my $class = shift;
     my %args = @_; 
-    my $db_schema = uc ($args{db_schema} || '');
+    my $db_schema = uc $class->_loader_db_schema;
     my $dbh = $class->storage->dbh;
+    my $quoter = $dbh->get_info(29) || q{"};
 
     # this is split out to avoid version parsing errors...
     my $is_dbd_db2_gte_114 = ( $DBD::DB2::VERSION >= 1.14 );
@@ -46,16 +45,16 @@ sub _tables {
         : $dbh->tables;
     # People who use table or schema names that aren't identifiers deserve
     # what they get.  Still, FIXME?
-    s/\"//g for @tables;
+    s/$quoter//g for @tables;
     @tables = grep {!/^SYSIBM\./ and !/^SYSCAT\./ and !/^SYSSTAT\./} @tables;
     @tables = grep {/^$db_schema\./} @tables if($db_schema);
     return @tables;
 }
 
-sub _table_info {
+sub _loader_table_info {
     my ( $class, $table ) = @_;
 #    $|=1;
-#    print "_table_info($table)\n";
+#    print "_loader_table_info($table)\n";
     my ($db_schema, $tabname) = split /\./, $table, 2;
     # print "DB_Schema: $db_schema, Table: $tabname\n";
     
@@ -70,7 +69,9 @@ WHERE c.TABSCHEMA = ? and c.TABNAME = ?
 SQL
 
     $sth->execute($db_schema, $tabname) or die;
-    my @cols = map { @$_ } @{$sth->fetchall_arrayref};
+    my @cols = map { lc } map { @$_ } @{$sth->fetchall_arrayref};
+
+    undef $sth;
 
     $sth = $dbh->prepare(<<'SQL') or die;
 SELECT kcu.COLNAME
@@ -81,11 +82,49 @@ SQL
 
     $sth->execute($db_schema, $tabname) or die;
 
-    my @pri = map { @$_ } @{$sth->fetchall_arrayref};
-    
+    my @pri = map { lc } map { @$_ } @{$sth->fetchall_arrayref};
+
     return ( \@cols, \@pri );
 }
 
+# Find and setup relationships
+sub _loader_relationships {
+    my $class = shift;
+
+    my $dbh = $class->storage->dbh;
+
+    my $sth = $dbh->prepare(<<'SQL') or die;
+SELECT SR.COLCOUNT, SR.REFTBNAME, SR.PKCOLNAMES, SR.FKCOLNAMES
+FROM SYSIBM.SYSRELS SR WHERE SR.TBNAME = ?
+SQL
+
+    foreach my $table ( $class->tables ) {
+        next if ! $sth->execute(uc $table);
+        while(my $res = $sth->fetchrow_arrayref()) {
+            my ($colcount, $other, $other_column, $column) =
+                map { lc } @$res;
+
+            my @self_cols = split(' ',$column);
+            my @other_cols = split(' ',$other_column);
+            if(@self_cols != $colcount || @other_cols != $colcount) {
+                die "Column count discrepancy while getting rel info";
+            }
+
+            my %cond;
+            for(my $i = 0; $i < @self_cols; $i++) {
+                $cond{$other_cols[$i]} = $self_cols[$i];
+            }
+
+            eval { $class->_loader_make_relations ($table, $other, \%cond); };
+            warn qq/\# belongs_to_many failed "$@"\n\n/
+              if $@ && $class->_loader_debug;
+        }
+    }
+
+    $sth->finish;
+    $dbh->disconnect;
+}
+
 =head1 SEE ALSO
 
 L<DBIx::Class::Schema::Loader>