handle CamelCase columns for making relnames
[dbsrgits/DBIx-Class-Schema-Loader.git] / lib / DBIx / Class / Schema / Loader / DBI / Sybase.pm
CommitLineData
fe67d343 1package DBIx::Class::Schema::Loader::DBI::Sybase;
2
3use strict;
4use warnings;
de82711a 5use base 'DBIx::Class::Schema::Loader::DBI::Sybase::Common';
fe67d343 6use Carp::Clan qw/^DBIx::Class/;
7use Class::C3;
8
9990e58f 9our $VERSION = '0.07000';
fe67d343 10
11=head1 NAME
12
5163dc4a 13DBIx::Class::Schema::Loader::DBI::Sybase - DBIx::Class::Schema::Loader::DBI
14Sybase ASE Implementation.
fe67d343 15
16=head1 DESCRIPTION
17
5163dc4a 18See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>.
fe67d343 19
20=cut
21
565335e6 22sub _is_case_sensitive { 1 }
23
fe67d343 24sub _rebless {
25 my $self = shift;
26
27 my $dbh = $self->schema->storage->dbh;
28 my $DBMS_VERSION = @{$dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2];
29 if ($DBMS_VERSION =~ /^Microsoft /i) {
b1e43108 30 $DBMS_VERSION =~ s/\s/_/g;
31 my $subclass = "DBIx::Class::Schema::Loader::DBI::Sybase::$DBMS_VERSION";
65f74457 32 if ($self->load_optional_class($subclass) && !$self->isa($subclass)) {
33 bless $self, $subclass;
34 $self->_rebless;
fe67d343 35 }
36 }
37}
38
39sub _table_columns {
40 my ($self, $table) = @_;
41
42 my $dbh = $self->schema->storage->dbh;
9a55cbd2 43 my $columns = $dbh->selectcol_arrayref(qq{
44SELECT c.name
45FROM syscolumns c JOIN sysobjects o
46ON c.id = o.id
47WHERE o.name = @{[ $dbh->quote($table) ]} AND o.type = 'U'
48});
fe67d343 49
50 return $columns;
51}
52
53sub _table_pk_info {
54 my ($self, $table) = @_;
55
56 my $dbh = $self->schema->storage->dbh;
772367d3 57 my $sth = $dbh->prepare(qq{sp_pkeys @{[ $dbh->quote($table) ]}});
fe67d343 58 $sth->execute;
59
60 my @keydata;
61
62 while (my $row = $sth->fetchrow_hashref) {
c9373b79 63 push @keydata, $row->{column_name};
fe67d343 64 }
65
66 return \@keydata;
67}
68
69sub _table_fk_info {
70 my ($self, $table) = @_;
71
0852b7b8 72 # check if FK_NAME is supported
565335e6 73
0852b7b8 74 my $dbh = $self->schema->storage->dbh;
565335e6 75 local $dbh->{FetchHashKeyName} = 'NAME_lc';
0852b7b8 76 # hide "Object does not exist in this database." when trying to fetch fkeys
77 local $dbh->{syb_err_handler} = sub { return $_[0] == 17461 ? 0 : 1 };
772367d3 78 my $sth = $dbh->prepare(qq{sp_fkeys \@fktable_name = @{[ $dbh->quote($table) ]}});
0852b7b8 79 $sth->execute;
80 my $row = $sth->fetchrow_hashref;
81
82 return unless $row;
83
84 if (exists $row->{fk_name}) {
85 $sth->finish;
86 return $self->_table_fk_info_by_name($table);
87 }
88
89 $sth->finish;
90 return $self->_table_fk_info_builder($table);
91}
92
93sub _table_fk_info_by_name {
94 my ($self, $table) = @_;
95 my ($local_cols, $remote_cols, $remote_table, @rels);
565335e6 96
0852b7b8 97 my $dbh = $self->schema->storage->dbh;
98 local $dbh->{FetchHashKeyName} = 'NAME_lc';
fe67d343 99 # hide "Object does not exist in this database." when trying to fetch fkeys
0852b7b8 100 local $dbh->{syb_err_handler} = sub { return $_[0] == 17461 ? 0 : 1 };
772367d3 101 my $sth = $dbh->prepare(qq{sp_fkeys \@fktable_name = @{[ $dbh->quote($table) ]}});
fe67d343 102 $sth->execute;
103
104 while (my $row = $sth->fetchrow_hashref) {
0852b7b8 105 my $fk = $row->{fk_name};
106 next unless defined $fk;
565335e6 107
108 push @{$local_cols->{$fk}}, $row->{fkcolumn_name};
109 push @{$remote_cols->{$fk}}, $row->{pkcolumn_name};
110 $remote_table->{$fk} = $row->{pktable_name};
fe67d343 111 }
112
113 foreach my $fk (keys %$remote_table) {
65f74457 114 push @rels, {
115 local_columns => \@{$local_cols->{$fk}},
116 remote_columns => \@{$remote_cols->{$fk}},
117 remote_table => $remote_table->{$fk},
118 };
fe67d343 119
120 }
121 return \@rels;
122}
123
0852b7b8 124sub _table_fk_info_builder {
125 my ($self, $table) = @_;
126
127 my $dbh = $self->schema->storage->dbh;
128 local $dbh->{FetchHashKeyName} = 'NAME_lc';
129 # hide "Object does not exist in this database." when trying to fetch fkeys
130 local $dbh->{syb_err_handler} = sub { return 0 if $_[0] == 17461; };
772367d3 131 my $sth = $dbh->prepare(qq{sp_fkeys \@fktable_name = @{[ $dbh->quote($table) ]}});
0852b7b8 132 $sth->execute;
133
134 my @fk_info;
135 while (my $row = $sth->fetchrow_hashref) {
136 (my $ksq = $row->{key_seq}) =~ s/\s+//g;
137
138 my @keys = qw/pktable_name pkcolumn_name fktable_name fkcolumn_name/;
139 my %ds;
140 @ds{@keys} = @{$row}{@keys};
141 $ds{key_seq} = $ksq;
142
143 push @{ $fk_info[$ksq] }, \%ds;
144 }
145
146 my $max_keys = $#fk_info;
147 my @rels;
148 for my $level (reverse 1 .. $max_keys) {
149 my @level_rels;
150 $level_rels[$level] = splice @fk_info, $level, 1;
151 my $count = @{ $level_rels[$level] };
152
153 for my $sub_level (reverse 1 .. $level-1) {
154 my $total = @{ $fk_info[$sub_level] };
155
156 $level_rels[$sub_level] = [
157 splice @{ $fk_info[$sub_level] }, $total-$count, $count
158 ];
159 }
160
161 while (1) {
162 my @rel = map shift @$_, @level_rels[1..$level];
163
164 last unless defined $rel[0];
165
166 my @local_columns = map $_->{fkcolumn_name}, @rel;
167 my @remote_columns = map $_->{pkcolumn_name}, @rel;
168 my $remote_table = $rel[0]->{pktable_name};
169
170 push @rels, {
171 local_columns => \@local_columns,
172 remote_columns => \@remote_columns,
173 remote_table => $remote_table
174 };
175 }
176 }
177
178 return \@rels;
179}
180
fe67d343 181sub _table_uniq_info {
182 my ($self, $table) = @_;
183
0852b7b8 184 local $SIG{__WARN__} = sub {};
185
fe67d343 186 my $dbh = $self->schema->storage->dbh;
0852b7b8 187 local $dbh->{FetchHashKeyName} = 'NAME_lc';
772367d3 188 my $sth = $dbh->prepare(qq{sp_helpconstraint \@objname=@{[ $dbh->quote($table) ]}, \@nomsg='nomsg'});
0852b7b8 189 eval { $sth->execute };
190 return if $@;
fe67d343 191
192 my $constraints;
193 while (my $row = $sth->fetchrow_hashref) {
1e1839d1 194 if (exists $row->{constraint_type}) {
195 my $type = $row->{constraint_type} || '';
196 if ($type =~ /^unique/i) {
c9373b79 197 my $name = $row->{constraint_name};
1e1839d1 198 push @{$constraints->{$name}},
c9373b79 199 ( split /,/, $row->{constraint_keys} );
1e1839d1 200 }
201 } else {
202 my $def = $row->{definition} || next;
203 next unless $def =~ /^unique/i;
c9373b79 204 my $name = $row->{name};
1e1839d1 205 my ($keys) = $def =~ /\((.*)\)/;
206 $keys =~ s/\s*//g;
c9373b79 207 my @keys = split /,/ => $keys;
1e1839d1 208 push @{$constraints->{$name}}, @keys;
fe67d343 209 }
210 }
211
212 my @uniqs = map { [ $_ => $constraints->{$_} ] } keys %$constraints;
213 return \@uniqs;
214}
215
6ecee584 216# get the correct data types, defaults and size
db4d62ad 217sub _columns_info_for {
218 my $self = shift;
219 my ($table) = @_;
220 my $result = $self->next::method(@_);
221
222 my $dbh = $self->schema->storage->dbh;
223 my $sth = $dbh->prepare(qq{
5163dc4a 224SELECT c.name name, bt.name base_type, ut.name user_type, cm.text deflt, c.prec prec, c.scale scale, c.length len
db4d62ad 225FROM syscolumns c
226JOIN sysobjects o ON c.id = o.id
5163dc4a 227LEFT JOIN systypes bt ON c.type = bt.type
228LEFT JOIN systypes ut ON c.usertype = ut.usertype
2fb9a4b3 229LEFT JOIN syscomments cm
230 ON cm.id = CASE WHEN c.cdefault = 0 THEN c.computedcol ELSE c.cdefault END
db4d62ad 231WHERE o.name = @{[ $dbh->quote($table) ]} AND o.type = 'U'
232});
233 $sth->execute;
234 local $dbh->{FetchHashKeyName} = 'NAME_lc';
2fb9a4b3 235 my $info = $sth->fetchall_hashref('name');
db4d62ad 236
2fb9a4b3 237 while (my ($col, $res) = each %$result) {
5163dc4a 238 my $data_type = $res->{data_type} = $info->{$col}{user_type} || $info->{$col}{base_type};
41968729 239
240 if ($data_type && $data_type =~ /^timestamp\z/i) {
241 $res->{inflate_datetime} = 0;
242 }
2fb9a4b3 243
244 if (my $default = $info->{$col}{deflt}) {
245 if ($default =~ /^AS \s+ (\S+)/ix) {
246 my $function = $1;
247 $res->{default_value} = \$function;
0faae4b8 248
249 if ($function =~ /^getdate\b/) {
250 $res->{inflate_datetime} = 1;
251 }
5163dc4a 252
253 delete $res->{size};
254 $res->{data_type} = undef;
2fb9a4b3 255 }
256 elsif ($default =~ /^DEFAULT \s+ (\S+)/ix) {
41968729 257 my ($constant_default) = $1 =~ /^['"\[\]]?(.*?)['"\[\]]?\z/;
2fb9a4b3 258 $res->{default_value} = $constant_default;
259 }
260 }
6ecee584 261
6ecee584 262 if (my $data_type = $res->{data_type}) {
5163dc4a 263 if ($data_type eq 'int') {
264 $data_type = $res->{data_type} = 'integer';
265 }
266 elsif ($data_type eq 'decimal') {
267 $data_type = $res->{data_type} = 'numeric';
268 }
269
270 if ($data_type =~ /^(?:text|unitext|image|bigint|integer|smallint|tinyint|real|double|double precision|float|date|time|datetime|smalldatetime|money|smallmoney|timestamp|bit)\z/i) {
6ecee584 271 delete $res->{size};
272 }
5163dc4a 273 elsif ($data_type eq 'numeric') {
274 my ($prec, $scale) = @{$info->{$col}}{qw/prec scale/};
275
276 if ($prec == 18 && $scale == 0) {
277 delete $res->{size};
278 }
279 else {
280 $res->{size} = [ $prec, $scale ];
281 }
6ecee584 282 }
283 elsif ($data_type =~ /^(?:unichar|univarchar)\z/i) {
284 $res->{size} /= 2;
285 }
286 }
5163dc4a 287
288 if ($data_type eq 'float') {
289 $res->{data_type} = $info->{$col}{len} <= 4 ? 'real' : 'double precision';
290 }
db4d62ad 291 }
292
293 return $result;
294}
295
fe67d343 296sub _extra_column_info {
45be2ce7 297 my ($self, $table, $column, $info, $dbi_info) = @_;
fe67d343 298 my %extra_info;
299
fe67d343 300 my $dbh = $self->schema->storage->dbh;
772367d3 301 my $sth = $dbh->prepare(qq{SELECT name FROM syscolumns WHERE id = (SELECT id FROM sysobjects WHERE name = @{[ $dbh->quote($table) ]}) AND (status & 0x80) = 0x80 AND name = @{[ $dbh->quote($column) ]}});
fe67d343 302 $sth->execute();
303
304 if ($sth->fetchrow_array) {
305 $extra_info{is_auto_increment} = 1;
306 }
307
308 return \%extra_info;
309}
310
311=head1 SEE ALSO
312
5163dc4a 313L<DBIx::Class::Schema::Loader::DBI::Sybase::Common>,
fe67d343 314L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
315L<DBIx::Class::Schema::Loader::DBI>
316
317=head1 AUTHOR
318
9cc8e7e1 319See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
fe67d343 320
be80bba7 321=head1 LICENSE
0852b7b8 322
be80bba7 323This library is free software; you can redistribute it and/or modify it under
324the same terms as Perl itself.
0852b7b8 325
fe67d343 326=cut
327
3281;