X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI.pm;h=89cf5a35abf92f302d2585c7d01f96cac724e00f;hb=26283ee38f220f6c6bae720ea5a189c9c0f47f6f;hp=a679dfebc6d95edac804bf94e4ccb2e4d9873aae;hpb=2d2ed728a590d24c172d60aebc88438afabe9c04;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Storage/DBI.pm b/lib/DBIx/Class/Storage/DBI.pm
index a679dfe..89cf5a3 100644
--- a/lib/DBIx/Class/Storage/DBI.pm
+++ b/lib/DBIx/Class/Storage/DBI.pm
@@ -14,6 +14,11 @@ use DBIx::Class::Storage::Statistics;
 use Scalar::Util();
 use List::Util();
 
+# what version of sqlt do we require if deploy() without a ddl_dir is invoked
+# when changing also adjust the corresponding author_require in Makefile.PL
+my $minimum_sqlt_version = '0.11002';
+
+
 __PACKAGE__->mk_group_accessors('simple' =>
   qw/_connect_info _dbi_connect_info _dbh _sql_maker _sql_maker_opts _conn_pid
      _conn_tid transaction_depth _dbh_autocommit _driver_determined savepoints/
@@ -681,7 +686,8 @@ sub disconnect {
 
     $self->_do_connection_actions(disconnect_call_ => $_) for @actions;
 
-    $self->_dbh->rollback unless $self->_dbh_autocommit;
+    $self->_dbh_rollback unless $self->_dbh_autocommit;
+
     $self->_dbh->disconnect;
     $self->_dbh(undef);
     $self->{_dbh_gen}++;
@@ -835,7 +841,9 @@ sub sql_maker {
   return $self->_sql_maker;
 }
 
+# nothing to do by default
 sub _rebless {}
+sub _init {}
 
 sub _populate_dbh {
   my ($self) = @_;
@@ -902,6 +910,8 @@ sub _determine_driver {
 
     $self->_driver_determined(1);
 
+    $self->_init; # run driver-specific initializations
+
     $self->_run_connection_actions
         if $started_unconnected && defined $self->_dbh;
   }
@@ -997,6 +1007,8 @@ sub _connect {
             $weak_self->throw_exception("DBI Exception: $_[0]");
           }
           else {
+            # the handler may be invoked by something totally out of
+            # the scope of DBIC
             croak ("DBI Exception: $_[0]");
           }
       };
@@ -1106,27 +1118,36 @@ sub txn_begin {
   if($self->{transaction_depth} == 0) {
     $self->debugobj->txn_begin()
       if $self->debug;
-
-    # being here implies we have AutoCommit => 1
-    # if the user is utilizing txn_do - good for
-    # him, otherwise we need to ensure that the
-    # $dbh is healthy on BEGIN
-    my $dbh_method = $self->{_in_dbh_do} ? '_dbh' : 'dbh';
-    $self->$dbh_method->begin_work;
-
-  } elsif ($self->auto_savepoint) {
+    $self->_dbh_begin_work;
+  }
+  elsif ($self->auto_savepoint) {
     $self->svp_begin;
   }
   $self->{transaction_depth}++;
 }
 
+sub _dbh_begin_work {
+  my $self = shift;
+
+  # if the user is utilizing txn_do - good for him, otherwise we need to
+  # ensure that the $dbh is healthy on BEGIN.
+  # We do this via ->dbh_do instead of ->dbh, so that the ->dbh "ping"
+  # will be replaced by a failure of begin_work itself (which will be
+  # then retried on reconnect)
+  if ($self->{_in_dbh_do}) {
+    $self->_dbh->begin_work;
+  } else {
+    $self->dbh_do(sub { $_[1]->begin_work });
+  }
+}
+
 sub txn_commit {
   my $self = shift;
   if ($self->{transaction_depth} == 1) {
     my $dbh = $self->_dbh;
     $self->debugobj->txn_commit()
       if ($self->debug);
-    $dbh->commit;
+    $self->_dbh_commit;
     $self->{transaction_depth} = 0
       if $self->_dbh_autocommit;
   }
@@ -1137,6 +1158,11 @@ sub txn_commit {
   }
 }
 
+sub _dbh_commit {
+  my $self = shift;
+  $self->_dbh->commit;
+}
+
 sub txn_rollback {
   my $self = shift;
   my $dbh = $self->_dbh;
@@ -1146,7 +1172,7 @@ sub txn_rollback {
         if ($self->debug);
       $self->{transaction_depth} = 0
         if $self->_dbh_autocommit;
-      $dbh->rollback;
+      $self->_dbh_rollback;
     }
     elsif($self->{transaction_depth} > 1) {
       $self->{transaction_depth}--;
@@ -1169,6 +1195,11 @@ sub txn_rollback {
   }
 }
 
+sub _dbh_rollback {
+  my $self = shift;
+  $self->_dbh->rollback;
+}
+
 # This used to be the top-half of _execute.  It was split out to make it
 #  easier to override in NoBindVars without duping the rest.  It takes up
 #  all of _execute's args, and emits $sql, @bind.
@@ -1359,6 +1390,7 @@ sub insert_bulk {
     local $Data::Dumper::Indent = 1;
     local $Data::Dumper::Useqq = 1;
     local $Data::Dumper::Quotekeys = 0;
+    local $Data::Dumper::Sortkeys = 1;
 
     $self->throw_exception(sprintf "%s for populate slice:\n%s",
       $tuple_status->[$i][1],
@@ -1374,12 +1406,17 @@ sub insert_bulk {
 }
 
 sub update {
-  my $self = shift @_;
-  my $source = shift @_;
-  $self->_determine_driver;
+  my ($self, $source, @args) = @_; 
+
+# redispatch to update method of storage we reblessed into, if necessary
+  if (not $self->_driver_determined) {
+    $self->_determine_driver;
+    goto $self->can('update');
+  }
+
   my $bind_attributes = $self->source_bind_attributes($source);
 
-  return $self->_execute('update' => [], $source, $bind_attributes, @_);
+  return $self->_execute('update' => [], $source, $bind_attributes, @args);
 }
 
 
@@ -2153,6 +2190,36 @@ sub _native_data_type {
   return undef
 }
 
+# Check if placeholders are supported at all
+sub _placeholders_supported {
+  my $self = shift;
+  my $dbh  = $self->_get_dbh;
+
+  # some drivers provide a $dbh attribute (e.g. Sybase and $dbh->{syb_dynamic_supported})
+  # but it is inaccurate more often than not
+  eval {
+    local $dbh->{PrintError} = 0;
+    local $dbh->{RaiseError} = 1;
+    $dbh->do('select ?', {}, 1);
+  };
+  return $@ ? 0 : 1;
+}
+
+# Check if placeholders bound to non-string types throw exceptions
+#
+sub _typeless_placeholders_supported {
+  my $self = shift;
+  my $dbh  = $self->_get_dbh;
+
+  eval {
+    local $dbh->{PrintError} = 0;
+    local $dbh->{RaiseError} = 1;
+    # this specifically tests a bind that is NOT a string
+    $dbh->do('select 1 where 1 = ?', {}, 1);
+  };
+  return $@ ? 0 : 1;
+}
+
 =head2 sqlt_type
 
 Returns the database driver name.
@@ -2487,7 +2554,6 @@ Returns the datetime parser class
 sub datetime_parser {
   my $self = shift;
   return $self->{datetime_parser} ||= do {
-    $self->_populate_dbh unless $self->_dbh;
     $self->build_datetime_parser(@_);
   };
 }
@@ -2508,6 +2574,11 @@ See L</datetime_parser>
 =cut
 
 sub build_datetime_parser {
+  if (not $_[0]->_driver_determined) {
+    $_[0]->_determine_driver;
+    goto $_[0]->can('build_datetime_parser');
+  }
+
   my $self = shift;
   my $type = $self->datetime_parser_type(@_);
   $self->ensure_class_loaded ($type);
@@ -2540,12 +2611,41 @@ sub lag_behind_master {
     return;
 }
 
+# SQLT version handling 
+{
+  my $_sqlt_version_ok;     # private 
+  my $_sqlt_version_error;  # private 
+
+  sub _sqlt_version_ok {
+    if (!defined $_sqlt_version_ok) {
+      eval "use SQL::Translator $minimum_sqlt_version";
+      if ($@) {
+        $_sqlt_version_ok = 0;
+        $_sqlt_version_error = $@;
+      }
+      else {
+        $_sqlt_version_ok = 1;
+      }
+    }
+    return $_sqlt_version_ok;
+  }
+
+  sub _sqlt_version_error {
+    shift->_sqlt_version_ok unless defined $_sqlt_version_ok;
+    return $_sqlt_version_error;
+  }
+
+  sub _sqlt_minimum_version { $minimum_sqlt_version };
+}
+
 sub DESTROY {
   my $self = shift;
+
   $self->_verify_pid if $self->_dbh;
 
   # some databases need this to stop spewing warnings
   if (my $dbh = $self->_dbh) {
+    local $@;
     eval { $dbh->disconnect };
   }