X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI.pm;h=ac2990055d9a6e87c43edb57528beb20cea0cb58;hb=fc22fbac7c99f1ee8a52e529a6ce4ee35fd5d4a9;hp=b87648af2d3f022e7af339366846581575ff3f78;hpb=e8d293dfb0a738b6ad37f9ce500f517a247c5289;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Storage/DBI.pm b/lib/DBIx/Class/Storage/DBI.pm
index b87648a..ac29900 100644
--- a/lib/DBIx/Class/Storage/DBI.pm
+++ b/lib/DBIx/Class/Storage/DBI.pm
@@ -1,5 +1,7 @@
 package DBIx::Class::Storage::DBI;
 
+use base 'DBIx::Class::Storage';
+
 use strict;
 use warnings;
 use DBI;
@@ -66,6 +68,8 @@ sub _order_by {
     if (defined $_[0]->{order_by}) {
       $ret .= $self->SUPER::_order_by($_[0]->{order_by});
     }
+  } elsif(ref $_[0] eq 'SCALAR') {
+    $ret = $self->_sqlcase(' order by ').${ $_[0] };
   } else {
     $ret = $self->SUPER::_order_by(@_);
   }
@@ -206,8 +210,8 @@ use base qw/DBIx::Class/;
 __PACKAGE__->load_components(qw/AccessorGroup/);
 
 __PACKAGE__->mk_group_accessors('simple' =>
-  qw/connect_info _dbh _sql_maker _connection_pid debug debugfh cursor
-     on_connect_do transaction_depth/);
+  qw/connect_info _dbh _sql_maker _conn_pid _conn_tid debug debugfh
+     cursor on_connect_do transaction_depth/);
 
 sub new {
   my $new = bless({}, ref $_[0] || $_[0]);
@@ -286,8 +290,20 @@ sub disconnect {
 sub connected {
   my ($self) = @_;
 
-  my $dbh;
-  (($dbh = $self->_dbh) && $dbh->FETCH('Active') && $dbh->ping)
+  if(my $dbh = $self->_dbh) {
+      if(defined $self->_conn_tid && $self->_conn_tid != threads->tid) {
+          $self->_sql_maker(undef);
+          return $self->_dbh(undef);
+      }
+      elsif($self->_conn_pid != $$) {
+          $self->_dbh->{InactiveDestroy} = 1;
+          $self->_sql_maker(undef);
+          return $self->_dbh(undef)
+      }
+      return ($dbh->FETCH('Active') && $dbh->ping);
+  }
+
+  return 0;
 }
 
 sub ensure_connected {
@@ -301,8 +317,6 @@ sub ensure_connected {
 sub dbh {
   my ($self) = @_;
 
-  $self->_dbh(undef)
-    if $self->_connection_pid && $self->_connection_pid != $$;
   $self->ensure_connected;
   return $self->_dbh;
 }
@@ -329,23 +343,32 @@ sub _populate_dbh {
     $self->_dbh->do($sql_statement);
   }
 
-  $self->_connection_pid($$);
+  $self->_conn_pid($$);
+  $self->_conn_tid(threads->tid) if $INC{'threads.pm'};
 }
 
 sub _connect {
   my ($self, @info) = @_;
 
+  my ($old_connect_via, $dbh);
+
   if ($INC{'Apache/DBI.pm'} && $ENV{MOD_PERL}) {
-      my $old_connect_via = $DBI::connect_via;
+      $old_connect_via = $DBI::connect_via;
       $DBI::connect_via = 'connect';
-      my $dbh = DBI->connect(@info);
-      $DBI::connect_via = $old_connect_via;
-      return $dbh;
   }
 
-  my $dbh = DBI->connect(@info);
+  if(ref $info[0] eq 'CODE') {
+      $dbh = &{$info[0]};
+  }
+  else {
+      $dbh = DBI->connect(@info);
+  }
+
+  $DBI::connect_via = $old_connect_via if $old_connect_via;
+
   $self->throw_exception("DBI Connection failed: $DBI::errstr")
       unless $dbh;
+
   $dbh;
 }
 
@@ -353,11 +376,15 @@ sub _connect {
 
 Calls begin_work on the current dbh.
 
+See L<DBIx::Class::Schema> for the txn_do() method, which allows for
+an entire code block to be executed transactionally.
+
 =cut
 
 sub txn_begin {
   my $self = shift;
-  $self->dbh->begin_work if $self->{transaction_depth}++ == 0 and $self->dbh->{AutoCommit};
+  $self->dbh->begin_work
+    if $self->{transaction_depth}++ == 0 and $self->dbh->{AutoCommit};
 }
 
 =head2 txn_commit
@@ -378,17 +405,32 @@ sub txn_commit {
 
 =head2 txn_rollback
 
-Issues a rollback against the current dbh.
+Issues a rollback against the current dbh. A nested rollback will
+throw a L<DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION> exception,
+which allows the rollback to propagate to the outermost transaction.
 
 =cut
 
 sub txn_rollback {
   my $self = shift;
-  if ($self->{transaction_depth} == 0) {
-    $self->dbh->rollback unless $self->dbh->{AutoCommit};
-  }
-  else {
-    --$self->{transaction_depth} == 0 ? $self->dbh->rollback : die $@;    
+
+  eval {
+    if ($self->{transaction_depth} == 0) {
+      $self->dbh->rollback unless $self->dbh->{AutoCommit};
+    }
+    else {
+      --$self->{transaction_depth} == 0 ?
+        $self->dbh->rollback :
+        die DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION->new;
+    }
+  };
+
+  if ($@) {
+    my $error = $@;
+    my $exception_class = "DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION";
+    $error =~ /$exception_class/ and $self->throw_exception($error);
+    $self->{transaction_depth} = 0;          # ensure that a failed rollback
+    $self->throw_exception($error);          # resets the transaction depth
   }
 }
 
@@ -397,15 +439,15 @@ sub _execute {
   my ($sql, @bind) = $self->sql_maker->$op($ident, @args);
   unshift(@bind, @$extra_bind) if $extra_bind;
   if ($self->debug) {
-      my @debug_bind = map { defined $_ ? $_ : 'NULL' } @bind;
-      $self->debugfh->print("$sql: @debug_bind\n");
+      my @debug_bind = map { defined $_ ? qq{`$_'} : q{`NULL'} } @bind;
+      $self->debugfh->print("$sql: " . join(', ', @debug_bind) . "\n");
   }
   my $sth = $self->sth($sql,$op);
   $self->throw_exception("no sth generated via sql: $sql") unless $sth;
   @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
   my $rv;
   if ($sth) {  
-    $rv = $sth->execute(@bind);
+    $rv = $sth->execute(@bind) or $self->throw_exception("Error executing '$sql': " . $sth->errstr);
   } else { 
     $self->throw_exception("'$sql' did not generate a statement.");
   }
@@ -476,25 +518,41 @@ Returns database type info for a given table columns.
 
 =cut
 
+# override this in a subclass if your DBD ->can('column_info'),
+#  but the call itself is horribly broken.
+sub _column_info_broken { 0 }
+
 sub columns_info_for {
     my ($self, $table) = @_;
+
     my %result;
-    if ( $self->dbh->can( 'column_info' ) ){
+    if ( $self->dbh->can( 'column_info' ) && !$self->_column_info_broken){
         my $sth = $self->dbh->column_info( undef, undef, $table, '%' );
         $sth->execute();
         while ( my $info = $sth->fetchrow_hashref() ){
             my %column_info;
             $column_info{data_type} = $info->{TYPE_NAME};
             $column_info{size} = $info->{COLUMN_SIZE};
-            $column_info{is_nullable} = $info->{NULLABLE};
+            $column_info{is_nullable} = $info->{NULLABLE} ? 1 : 0;
+            $column_info{default_value} = $info->{COLUMN_DEF};
             $result{$info->{COLUMN_NAME}} = \%column_info;
         }
     } else {
         my $sth = $self->dbh->prepare("SELECT * FROM $table WHERE 1=0");
         $sth->execute;
-        my @columns = @{$sth->{NAME}};
+        my @columns = @{$sth->{NAME_lc}};
         for my $i ( 0 .. $#columns ){
-            $result{$columns[$i]}{data_type} = $sth->{TYPE}->[$i];
+            my %column_info;
+            my $type_num = $sth->{TYPE}->[$i];
+            my $type_name;
+            if(defined $type_num && $self->dbh->can('type_info')) {
+                my $type_info = $self->dbh->type_info($type_num);
+                $type_name = $type_info->{TYPE_NAME} if $type_info;
+            }
+            $column_info{data_type} = $type_name ? $type_name : $type_num;
+            $column_info{size} = $sth->{PRECISION}->[$i];
+            $column_info{is_nullable} = $sth->{NULLABLE}->[$i] ? 1 : 0;
+            $result{$columns[$i]} = \%column_info;
         }
     }
     return \%result;
@@ -507,15 +565,10 @@ sub last_insert_id {
 
 }
 
-sub sqlt_type {
-  my ($self) = @_;
-  my $dsn = $self->connect_info->[0];
-  $dsn =~ /^dbi:(.*?)\d*:/;
-  return $1;
-}
+sub sqlt_type { shift->dbh->{Driver}->{Name} }
 
 sub deployment_statements {
-  my ($self, $schema, $type) = @_;
+  my ($self, $schema, $type, $sqltargs) = @_;
   $type ||= $self->sqlt_type;
   eval "use SQL::Translator";
   $self->throw_exception("Can't deploy without SQL::Translator: $@") if $@;
@@ -523,15 +576,16 @@ sub deployment_statements {
   $self->throw_exception($@) if $@; 
   eval "use SQL::Translator::Producer::${type};";
   $self->throw_exception($@) if $@;
-  my $tr = SQL::Translator->new();
+  my $tr = SQL::Translator->new(%$sqltargs);
   SQL::Translator::Parser::DBIx::Class::parse( $tr, $schema );
   return "SQL::Translator::Producer::${type}"->can('produce')->($tr);
 }
 
 sub deploy {
-  my ($self, $schema, $type) = @_;
-  foreach(split(";\n", $self->deployment_statements($schema, $type))) {
-	  $self->dbh->do($_) or warn "SQL was:\n $_";
+  my ($self, $schema, $type, $sqltargs) = @_;
+  foreach(split(";\n", $self->deployment_statements($schema, $type, $sqltargs))) {
+      $self->debugfh->print("$_\n") if $self->debug;
+          $self->dbh->do($_) or warn "SQL was:\n $_";
   } 
 }