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');
16 DBIx::Class::Storage::DBI::SQLAnywhere - Driver for Sybase SQL Anywhere
20 This class implements autoincrements for Sybase SQL Anywhere, selects the
21 RowNumberOver limit implementation and provides
22 L<DBIx::Class::InflateColumn::DateTime> support.
24 You need the C<DBD::SQLAnywhere> driver that comes with the SQL Anywhere
25 distribution, B<NOT> the one on CPAN. It is usually under a path such as:
27 /opt/sqlanywhere11/sdk/perl
29 Recommended L<connect_info|DBIx::Class::Storage::DBI/connect_info> settings:
31 on_connect_call => 'datetime_setup'
37 sub last_insert_id { shift->_identity }
39 sub _new_uuid { 'UUIDTOSTR(NEWID())' }
43 my ($source, $to_insert) = @_;
46 first { $source->column_info($_)->{is_auto_increment} } $source->columns;
48 # user might have an identity PK without is_auto_increment
49 if (not $identity_col) {
50 foreach my $pk_col ($source->primary_columns) {
51 if (not exists $to_insert->{$pk_col} &&
52 $source->column_info($pk_col)->{data_type} !~ /^uniqueidentifier/i)
54 $identity_col = $pk_col;
60 if ($identity_col && (not exists $to_insert->{$identity_col})) {
61 my $dbh = $self->_get_dbh;
62 my $table_name = $source->from;
63 $table_name = $$table_name if ref $table_name;
65 my ($identity) = try {
66 $dbh->selectrow_array("SELECT GET_IDENTITY('$table_name')")
69 if (defined $identity) {
70 $to_insert->{$identity_col} = $identity;
71 $self->_identity($identity);
75 return $self->next::method(@_);
78 # convert UUIDs to strings in selects
81 my ($ident, $select) = @_;
83 my $col_info = $self->_resolve_column_info($ident);
85 for my $select_idx (0..$#$select) {
86 my $selected = $select->[$select_idx];
88 next if ref $selected;
90 my $data_type = $col_info->{$selected}{data_type};
92 if ($data_type && lc($data_type) eq 'uniqueidentifier') {
93 $select->[$select_idx] = { UUIDTOSTR => $selected };
97 return $self->next::method(@_);
100 # this sub stolen from MSSQL
102 sub build_datetime_parser {
104 my $type = "DateTime::Format::Strptime";
106 eval "require ${type}"
109 $self->throw_exception("Couldn't load ${type}: $_");
112 return $type->new( pattern => '%Y-%m-%d %H:%M:%S.%6N' );
115 =head2 connect_call_datetime_setup
119 on_connect_call => 'datetime_setup'
121 In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to set the date and
122 timestamp formats (as temporary options for the session) for use with
123 L<DBIx::Class::InflateColumn::DateTime>.
125 The C<TIMESTAMP> data type supports up to 6 digits after the decimal point for
126 second precision. The full precision is used.
128 The C<DATE> data type supposedly stores hours and minutes too, according to the
129 documentation, but I could not get that to work. It seems to only store the
132 You will need the L<DateTime::Format::Strptime> module for inflation to work.
136 sub connect_call_datetime_setup {
140 "set temporary option timestamp_format = 'yyyy-mm-dd hh:mm:ss.ssssss'"
143 "set temporary option date_format = 'yyyy-mm-dd hh:mm:ss.ssssss'"
148 my ($self, $name) = @_;
150 $self->_get_dbh->do("SAVEPOINT $name");
153 # can't release savepoints that have been rolled back
154 sub _svp_release { 1 }
157 my ($self, $name) = @_;
159 $self->_get_dbh->do("ROLLBACK TO SAVEPOINT $name")
164 =head1 MAXIMUM CURSORS
166 A L<DBIx::Class> application can use a lot of cursors, due to the usage of
167 L<prepare_cached|DBI/prepare_cached>.
169 The default cursor maximum is C<50>, which can be a bit too low. This limit can
170 be turned off (or increased) by the DBA by executing:
172 set option max_statement_count = 0
173 set option max_cursor_count = 0
179 See L<DBIx::Class/AUTHOR> and L<DBIx::Class/CONTRIBUTORS>.
183 You may distribute this code under the same terms as Perl itself.