1 package DBIx::Class::Storage::DBI::SQLAnywhere;
5 use base qw/DBIx::Class::Storage::DBI::UniqueIdentifier/;
7 use List::Util 'first';
11 __PACKAGE__->mk_group_accessors(simple => qw/_identity/);
12 __PACKAGE__->sql_limit_dialect ('RowNumberOver');
13 __PACKAGE__->sql_quote_char ('"');
15 __PACKAGE__->new_guid('UUIDTOSTR(NEWID())');
17 # default to the UUID decoding cursor, overridable by the user
18 __PACKAGE__->cursor_class('DBIx::Class::Storage::DBI::SQLAnywhere::Cursor');
22 DBIx::Class::Storage::DBI::SQLAnywhere - Driver for SQL Anywhere
26 This class implements autoincrements for SQL Anywhere and provides
27 L<DBIx::Class::InflateColumn::DateTime> support and support for the
28 C<uniqueidentifier> type (via
29 L<DBIx::Class::Storage::DBI::SQLAnywhere::Cursor>.)
31 You need the C<DBD::SQLAnywhere> driver that comes with the SQL Anywhere
32 distribution, B<NOT> the one on CPAN. It is usually under a path such as:
34 /opt/sqlanywhere11/sdk/perl
36 Recommended L<connect_info|DBIx::Class::Storage::DBI/connect_info> settings:
38 on_connect_call => 'datetime_setup'
44 sub last_insert_id { shift->_identity }
46 sub _prefetch_autovalues {
48 my ($source, $to_insert) = @_;
50 my $values = $self->next::method(@_);
52 my $colinfo = $source->columns_info;
55 first { $colinfo->{$_}{is_auto_increment} } keys %$colinfo;
57 # user might have an identity PK without is_auto_increment
59 # FIXME we probably should not have supported the above, see what
60 # does it take to move away from it
61 if (not $identity_col) {
62 foreach my $pk_col ($source->primary_columns) {
64 ! exists $to_insert->{$pk_col}
66 $colinfo->{$pk_col}{data_type}
68 $colinfo->{$pk_col}{data_type} !~ /^uniqueidentifier/i
70 $identity_col = $pk_col;
76 if ($identity_col && (not exists $to_insert->{$identity_col})) {
77 my $dbh = $self->_get_dbh;
78 my $table_name = $source->from;
79 $table_name = $$table_name if ref $table_name;
81 my ($identity) = try {
82 $dbh->selectrow_array("SELECT GET_IDENTITY('$table_name')")
85 if (defined $identity) {
86 $values->{$identity_col} = $identity;
87 $self->_identity($identity);
95 my ($self, $data) = @_;
97 $data = unpack 'H*', $data;
99 for my $pos (8, 13, 18, 23) {
100 substr($data, $pos, 0) = '-';
106 # select_single does not invoke a cursor object at all, hence UUID decoding happens
107 # here if the proper cursor class is set
111 my @row = $self->next::method(@_);
114 unless $self->cursor_class->isa('DBIx::Class::Storage::DBI::SQLAnywhere::Cursor');
116 my ($ident, $select) = @_;
118 my $col_info = $self->_resolve_column_info($ident);
120 for my $select_idx (0..$#$select) {
121 my $selected = $select->[$select_idx];
123 next if ref $selected;
125 my $data_type = $col_info->{$selected}{data_type}
128 if ($self->_is_guid_type($data_type)) {
129 my $returned = $row[$select_idx];
131 if (length $returned == 16) {
132 $row[$select_idx] = $self->_uuid_to_str($returned);
140 # this sub stolen from MSSQL
142 sub build_datetime_parser {
144 my $type = "DateTime::Format::Strptime";
146 eval "require ${type}"
149 $self->throw_exception("Couldn't load ${type}: $_");
152 return $type->new( pattern => '%Y-%m-%d %H:%M:%S.%6N' );
155 =head2 connect_call_datetime_setup
159 on_connect_call => 'datetime_setup'
161 In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to set the date and
162 timestamp formats (as temporary options for the session) for use with
163 L<DBIx::Class::InflateColumn::DateTime>.
165 The C<TIMESTAMP> data type supports up to 6 digits after the decimal point for
166 second precision. The full precision is used.
168 The C<DATE> data type supposedly stores hours and minutes too, according to the
169 documentation, but I could not get that to work. It seems to only store the
172 You will need the L<DateTime::Format::Strptime> module for inflation to work.
176 sub connect_call_datetime_setup {
180 "set temporary option timestamp_format = 'yyyy-mm-dd hh:mm:ss.ssssss'"
183 "set temporary option date_format = 'yyyy-mm-dd hh:mm:ss.ssssss'"
187 sub _exec_svp_begin {
188 my ($self, $name) = @_;
190 $self->_dbh->do("SAVEPOINT $name");
193 # can't release savepoints that have been rolled back
194 sub _exec_svp_release { 1 }
196 sub _exec_svp_rollback {
197 my ($self, $name) = @_;
199 $self->_dbh->do("ROLLBACK TO SAVEPOINT $name")
204 =head1 MAXIMUM CURSORS
206 A L<DBIx::Class> application can use a lot of cursors, due to the usage of
207 L<prepare_cached|DBI/prepare_cached>.
209 The default cursor maximum is C<50>, which can be a bit too low. This limit can
210 be turned off (or increased) by the DBA by executing:
212 set option max_statement_count = 0
213 set option max_cursor_count = 0
219 See L<DBIx::Class/AUTHOR> and L<DBIx::Class/CONTRIBUTORS>.
223 You may distribute this code under the same terms as Perl itself.