Merge 'trunk' into 'sybase'

[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / Storage / DBI / Sybase / Base.pm

diff --git a/lib/DBIx/Class/Storage/DBI/Sybase/Base.pm b/lib/DBIx/Class/Storage/DBI/Sybase/Base.pm
index b375a8c..2284289 100644 (file)
--- a/lib/DBIx/Class/Storage/DBI/Sybase/Base.pm
+++ b/lib/DBIx/Class/Storage/DBI/Sybase/Base.pm
@@ -1,5 +1,4 @@
-package # hide from PAUSE
-    DBIx::Class::Storage::DBI::Sybase::Base;
+package DBIx::Class::Storage::DBI::Sybase::Base;
 
 use strict;
 use warnings;
@@ -12,6 +11,15 @@ use mro 'c3';
 DBIx::Class::Storage::DBI::Sybase::Base - Common functionality for drivers using
 DBD::Sybase
 
+=head1 DESCRIPTION
+
+This is the base class for L<DBIx::Class::Storage::DBI::Sybase> and
+L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>. It provides some
+utility methods related to L<DBD::Sybase> and the supported functions of the
+database you are connecting to.
+
+=head1 METHODS
+
 =cut
 
 sub _ping {
@@ -27,7 +35,14 @@ sub _ping {
   return $@ ? 0 : 1;
 }
 
-sub _placeholders_supported {
+=head2 placeholders_supported
+
+Whether or not string placeholders work. Does not check for implicit conversion
+errors, see L</placeholders_with_type_conversion_supported>.
+
+=cut
+
+sub placeholders_supported {
   my $self = shift;
   my $dbh  = $self->last_dbh;
 
@@ -36,11 +51,77 @@ sub _placeholders_supported {
 # purpose.
     local $dbh->{PrintError} = 0;
     local $dbh->{RaiseError} = 1;
+    $dbh->selectrow_array('select ?', {}, 1);
+  };
+}
+
+=head2 placeholders_with_type_conversion_supported 
+
+=cut
+
+sub placeholders_with_type_conversion_supported {
+  my $self = shift;
+  my $dbh  = $self->_dbh;
+
+  return eval {
+    local $dbh->{PrintError} = 0;
+    local $dbh->{RaiseError} = 1;
 # this specifically tests a bind that is NOT a string
     $dbh->selectrow_array('select 1 where 1 = ?', {}, 1);
   };
 }
 
+sub _set_max_connect {
+  my $self = shift;
+  my $val  = shift || 256;
+
+  my $dsn = $self->_dbi_connect_info->[0];
+
+  return if ref($dsn) eq 'CODE';
+
+  if ($dsn !~ /maxConnect=/) {
+    $self->_dbi_connect_info->[0] = "$dsn;maxConnect=$val";
+    my $connected = defined $self->_dbh;
+    $self->disconnect;
+    $self->ensure_connected if $connected;
+  }
+}
+
+=head2 using_freetds
+
+Whether or not L<DBD::Sybase> was compiled against FreeTDS. If false, it means
+the Sybase OpenClient libraries were used.
+
+=cut
+
+sub using_freetds {
+  my $self = shift;
+
+  return $self->_dbh->{syb_oc_version} =~ /freetds/i;
+}
+
+=head2 set_textsize
+
+When using FreeTDS and/or MSSQL, C<< $dbh->{LongReadLen} >> is not available,
+use this function instead. It does:
+
+  $dbh->do("SET TEXTSIZE $bytes");
+
+Takes the number of bytes, or uses the C<LongReadLen> value from your
+L<DBIx::Class/connect_info> if omitted.
+
+=cut
+
+sub set_textsize {
+  my $self = shift;
+  my $text_size = shift ||
+    eval { $self->_dbi_connect_info->[-1]->{LongReadLen} };
+
+  return unless defined $text_size;
+
+  $self->_dbh->do("SET TEXTSIZE $text_size");
+}
+
 1;
 
 =head1 AUTHORS