X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FMSSQL.pm;h=5d14612274b8d612abe9a4999400522ee1d42aae;hb=7d3139ac1ff52213e2dad35fc9c9d1057711256a;hp=ce714d420c31c9bf38018a7b3983da4918257f4d;hpb=ecdf1ac8ec414ab62b84c78bad176e125dff553d;p=dbsrgits%2FDBIx-Class.git diff --git a/lib/DBIx/Class/Storage/DBI/MSSQL.pm b/lib/DBIx/Class/Storage/DBI/MSSQL.pm index ce714d4..5d14612 100644 --- a/lib/DBIx/Class/Storage/DBI/MSSQL.pm +++ b/lib/DBIx/Class/Storage/DBI/MSSQL.pm @@ -3,16 +3,17 @@ package DBIx::Class::Storage::DBI::MSSQL; use strict; use warnings; -use base qw/DBIx::Class::Storage::DBI/; +use base qw/DBIx::Class::Storage::DBI::UniqueIdentifier/; use mro 'c3'; - -use List::Util(); +use Try::Tiny; +use List::Util 'first'; +use namespace::clean; __PACKAGE__->mk_group_accessors(simple => qw/ _identity _identity_method /); -__PACKAGE__->sql_maker_class('DBIx::Class::SQLAHacks::MSSQL'); +__PACKAGE__->sql_maker_class('DBIx::Class::SQLMaker::MSSQL'); sub _set_identity_insert { my ($self, $table) = @_; @@ -23,13 +24,13 @@ sub _set_identity_insert { ); my $dbh = $self->_get_dbh; - eval { $dbh->do ($sql) }; - if ($@) { + try { $dbh->do ($sql) } + catch { $self->throw_exception (sprintf "Error executing '%s': %s", $sql, $dbh->errstr, ); - } + }; } sub _unset_identity_insert { @@ -48,12 +49,8 @@ sub insert_bulk { my $self = shift; my ($source, $cols, $data) = @_; - my $is_identity_insert = (List::Util::first - { $source->column_info ($_)->{is_auto_increment} } - (@{$cols}) - ) - ? 1 - : 0; + my $is_identity_insert = + (first { $source->column_info ($_)->{is_auto_increment} } @{$cols}) ? 1 : 0; if ($is_identity_insert) { $self->_set_identity_insert ($source->name); @@ -66,58 +63,25 @@ sub insert_bulk { } } -# support MSSQL GUID column types - sub insert { my $self = shift; my ($source, $to_insert) = @_; my $supplied_col_info = $self->_resolve_column_info($source, [keys %$to_insert] ); - my %guid_cols; - my @pk_cols = $source->primary_columns; - my %pk_cols; - @pk_cols{@pk_cols} = (); - - my @pk_guids = grep { - $source->column_info($_)->{data_type} - && - $source->column_info($_)->{data_type} =~ /^uniqueidentifier/i - } @pk_cols; - - my @auto_guids = grep { - $source->column_info($_)->{data_type} - && - $source->column_info($_)->{data_type} =~ /^uniqueidentifier/i - && - $source->column_info($_)->{auto_nextval} - } grep { not exists $pk_cols{$_} } $source->columns; - - my @get_guids_for = - grep { not exists $to_insert->{$_} } (@pk_guids, @auto_guids); - - my $updated_cols = {}; - - for my $guid_col (@get_guids_for) { - my ($new_guid) = $self->_get_dbh->selectrow_array('SELECT NEWID()'); - $updated_cols->{$guid_col} = $to_insert->{$guid_col} = $new_guid; - } - - my $is_identity_insert = (List::Util::first { $_->{is_auto_increment} } (values %$supplied_col_info) ) - ? 1 - : 0; + my $is_identity_insert = + (first { $_->{is_auto_increment} } values %$supplied_col_info) ? 1 : 0; if ($is_identity_insert) { $self->_set_identity_insert ($source->name); } - $updated_cols = { %$updated_cols, %{ $self->next::method(@_) } }; + my $updated_cols = $self->next::method(@_); if ($is_identity_insert) { $self->_unset_identity_insert ($source->name); } - return $updated_cols; } @@ -160,7 +124,7 @@ sub _execute { # this should bring back the result of SELECT SCOPE_IDENTITY() we tacked # on in _prep_for_execute above - my ($identity) = eval { $sth->fetchrow_array }; + my ($identity) = try { $sth->fetchrow_array }; # SCOPE_IDENTITY failed, but we can do something else if ( (! $identity) && $self->_identity_method) { @@ -180,7 +144,7 @@ sub last_insert_id { shift->_identity } # # MSSQL is retarded wrt ordered subselects. One needs to add a TOP -# to *all* subqueries, but one also can't use TOP 100 PERCENT +# to *all* subqueries, but one also *can't* use TOP 100 PERCENT # http://sqladvice.com/forums/permalink/18496/22931/ShowThread.aspx#22931 # sub _select_args_to_query { @@ -190,11 +154,15 @@ sub _select_args_to_query { # see if this is an ordered subquery my $attrs = $_[3]; - if ( scalar $self->_parse_order_by ($attrs->{order_by}) ) { + if ( + $sql !~ /^ \s* SELECT \s+ TOP \s+ \d+ \s+ /xi + && + scalar $self->_extract_order_columns ($attrs->{order_by}) + ) { $self->throw_exception( 'An ordered subselect encountered - this is not safe! Please see "Ordered Subselects" in DBIx::Class::Storage::DBI::MSSQL ') unless $attrs->{unsafe_subselect_ok}; - my $max = 2 ** 32; + my $max = $self->sql_maker->__max_int; $sql =~ s/^ \s* SELECT \s/SELECT TOP $max /xi; } @@ -222,45 +190,32 @@ sub _svp_rollback { $self->_get_dbh->do("ROLLBACK TRANSACTION $name"); } -sub build_datetime_parser { - my $self = shift; - my $type = "DateTime::Format::Strptime"; - eval "use ${type}"; - $self->throw_exception("Couldn't load ${type}: $@") if $@; - return $type->new( pattern => '%Y-%m-%d %H:%M:%S' ); # %F %T +sub datetime_parser_type { + 'DBIx::Class::Storage::DBI::MSSQL::DateTime::Format' } sub sqlt_type { 'SQLServer' } -sub _get_mssql_version { +sub sql_limit_dialect { my $self = shift; - my $data = $self->_get_dbh->selectrow_hashref('xp_msver ProductVersion'); + my $supports_rno = 0; - if ($data->{Character_Value} =~ /^(\d+)\./) { - return $1; - } else { - $self->throw_exception(q{Your ProductVersion's Character_Value is missing or malformed!}); + if (exists $self->_server_info->{normalized_dbms_version}) { + $supports_rno = 1 if $self->_server_info->{normalized_dbms_version} >= 9; } -} - -sub sql_maker { - my $self = shift; - - unless ($self->_sql_maker) { - unless ($self->{_sql_maker_opts}{limit_dialect}) { - my $version = eval { $self->_get_mssql_version; } || 0; - - $self->{_sql_maker_opts} = { - limit_dialect => ($version >= 9 ? 'RowNumberOver' : 'Top'), - %{$self->{_sql_maker_opts}||{}} - }; - } - - my $maker = $self->next::method (@_); + else { + # User is connecting via DBD::Sybase and has no permission to run + # stored procedures like xp_msver, or version detection failed for some + # other reason. + # So, we use a query to check if RNO is implemented. + try { + $self->_get_dbh->selectrow_array('SELECT row_number() OVER (ORDER BY rand())'); + $supports_rno = 1; + }; } - return $self->_sql_maker; + return $supports_rno ? 'RowNumberOver' : 'Top'; } sub _ping { @@ -271,11 +226,60 @@ sub _ping { local $dbh->{RaiseError} = 1; local $dbh->{PrintError} = 0; - eval { + return try { $dbh->do('select 1'); + 1; + } catch { + 0; }; +} + +package # hide from PAUSE + DBIx::Class::Storage::DBI::MSSQL::DateTime::Format; + +my $datetime_format = '%Y-%m-%d %H:%M:%S.%3N'; # %F %T +my $smalldatetime_format = '%Y-%m-%d %H:%M:%S'; + +my ($datetime_parser, $smalldatetime_parser); + +sub parse_datetime { + shift; + require DateTime::Format::Strptime; + $datetime_parser ||= DateTime::Format::Strptime->new( + pattern => $datetime_format, + on_error => 'croak', + ); + return $datetime_parser->parse_datetime(shift); +} - return $@ ? 0 : 1; +sub format_datetime { + shift; + require DateTime::Format::Strptime; + $datetime_parser ||= DateTime::Format::Strptime->new( + pattern => $datetime_format, + on_error => 'croak', + ); + return $datetime_parser->format_datetime(shift); +} + +sub parse_smalldatetime { + shift; + require DateTime::Format::Strptime; + $smalldatetime_parser ||= DateTime::Format::Strptime->new( + pattern => $smalldatetime_format, + on_error => 'croak', + ); + return $smalldatetime_parser->parse_datetime(shift); +} + +sub format_smalldatetime { + shift; + require DateTime::Format::Strptime; + $smalldatetime_parser ||= DateTime::Format::Strptime->new( + pattern => $smalldatetime_format, + on_error => 'croak', + ); + return $smalldatetime_parser->format_datetime(shift); } 1; @@ -373,7 +377,7 @@ different/better way to get the same result - please file a bugreport. =head1 AUTHOR -See L. +See L and L. =head1 LICENSE