1 package DBIx::Class::Optional::Dependencies;
8 # NO EXTERNAL NON-5.8.1 CORE DEPENDENCIES EVER (e.g. C::A::G)
9 # This module is to be loaded by Makefile.PM on a pristine system
11 # POD is generated automatically by calling _gen_pod from the
12 # Makefile.PL in $AUTHOR mode
16 #'Module::Install::Pod::Inherit' => '0.01',
22 'MooseX::Types' => '0.21',
23 'namespace::clean' => '0.11',
24 'Hash::Merge' => '0.11',
27 title => 'Storage::Replicated',
28 desc => 'Modules required for L<DBIx::Class::Storage::DBI::Replicated>',
37 'SQL::Translator' => '0.11002',
40 title => 'Storage::DBI::deploy()',
41 desc => 'Modules required for L<DBIx::Class::Storage::DBI/deploy> and L<DBIx::Class::Storage::DBI/deploymen_statements>',
47 'Test::Pod' => '1.26',
48 'Test::Pod::Coverage' => '1.08',
49 'Pod::Coverage' => '0.20',
50 #'Test::NoTabs' => '0.9',
51 #'Test::EOL' => '0.6',
58 'Test::Memory::Cycle' => '0',
59 'Devel::Cycle' => '1.10',
63 'DateTime::Format::SQLite' => '0',
65 # t/96_is_deteministic_value.t
66 'DateTime::Format::Strptime'=> '0',
72 'DBIx::ContextualFetch' => '0',
73 'Class::DBI::Plugin::DeepAbstractSearch' => '0',
74 'Class::Trigger' => '0',
75 'Time::Piece::MySQL' => '0',
77 'Date::Simple' => '3.03',
85 'Sys::SigAction' => '0',
86 'DBD::Pg' => '2.009002',
87 'DateTime::Format::Pg' => '0',
94 $ENV{DBICTEST_MYSQL_DSN}
96 'DateTime::Format::MySQL' => '0',
104 $ENV{DBICTEST_ORA_DSN}
106 'DateTime::Format::Oracle' => '0',
113 $ENV{DBICTEST_SYBASE_DSN}
115 'DateTime::Format::Sybase' => 0,
122 grep $_, @ENV{qw/DBICTEST_SYBASE_ASA_DSN DBICTEST_SYBASE_ASA_ODBC_DSN/}
124 'DateTime::Format::Strptime' => 0,
131 sub _all_optional_requirements {
132 return { map { %{ $reqs->{$_}{req} || {} } } (keys %$reqs) };
136 my ($class, $group) = @_;
138 croak "req_list_for() expects a requirement group name"
141 my $deps = $reqs->{$group}{req}
142 or croak "Requirement group '$group' does not exist";
148 our %req_availability_cache;
150 my ($class, $group) = @_;
152 croak "req_ok_for() expects a requirement group name"
155 $class->_check_deps ($group) unless $req_availability_cache{$group};
157 return $req_availability_cache{$group}{status};
160 sub req_missing_for {
161 my ($class, $group) = @_;
163 croak "req_missing_for() expects a requirement group name"
166 $class->_check_deps ($group) unless $req_availability_cache{$group};
168 return $req_availability_cache{$group}{missing};
171 sub req_errorlist_for {
172 my ($class, $group) = @_;
174 croak "req_errorlist_for() expects a requirement group name"
177 $class->_check_deps ($group) unless $req_availability_cache{$group};
179 return $req_availability_cache{$group}{errorlist};
183 my ($class, $group) = @_;
185 my $deps = $class->req_list_for ($group);
188 for my $mod (keys %$deps) {
189 if (my $ver = $deps->{$mod}) {
190 eval "use $mod $ver ()";
196 $errors{$mod} = $@ if $@;
200 my $missing = join (', ', map { $deps->{$_} ? "$_ >= $deps->{$_}" : $_ } (sort keys %errors) );
201 $missing .= " (see $class for details)" if $reqs->{$group}{pod};
202 $req_availability_cache{$group} = {
204 errorlist => { %errors },
209 $req_availability_cache{$group} = {
222 "$class - Optional module dependency specifications",
223 '=head1 DESCRIPTION',
225 Some of the less-frequently used features of L<DBIx::Class> have external
226 module dependencies on their own. In order not to burden the average user
227 with modules he will never use, these optional dependencies are not included
228 in the base Makefile.PL. Instead an exception with a descriptive message is
229 thrown when a specific feature is missing one or several modules required for
230 its operation. This module is the central holding place for the current list
231 of such dependencies.
233 '=head1 CURRENT REQUIREMENT GROUPS',
235 Dependencies are organized in C<groups> and each group can list one or more
236 required modules, with an optional minimum version (or 0 for any version).
237 The group name can be used in the
241 for my $group (sort keys %$reqs) {
242 my $p = $reqs->{$group}{pod}
245 my $modlist = $reqs->{$group}{req}
248 next unless keys %$modlist;
251 "=head2 $p->{title}",
254 ( map { "=item * $_" . ($modlist->{$_} ? " >= $modlist->{$_}" : '') } (sort keys %$modlist) ),
256 "Requirement group: B<$group>",
262 '=head2 req_list_for',
264 '=item Arguments: $group_name',
265 '=item Returns: \%list_of_module_version_pairs',
268 This method should be used by DBIx::Class extension authors, to determine the
269 version of modules which a specific feature requires in the current version of
270 DBIx::Class. For example if you write a module/extension that requires
271 DBIx::Class and also requires the availability of
272 L<DBIx::Class::Storage::DBI/deploy>, you can do the following in your
273 C<Makefile.PL> or C<Build.PL>
276 my \$dep_list = $class->req_list_for ('deploy');
278 Which will give you a list of module/version pairs necessary for the particular
279 feature to function with this version of DBIx::Class.
284 '=item Arguments: $group_name',
285 '=item Returns: 1|0',
287 'Returns true or false depending on whether all modules required by $group_name are present on the system and loadable',
289 '=head2 req_missing_for',
291 '=item Arguments: $group_name',
292 '=item Returns: $error_message_string',
295 Returns a single line string suitable for inclusion in larger error messages.
296 This method would normally be used by DBIx::Class core-module author, to
297 indicate to the user that he needs to install specific modules before he will
298 be able to use a specific feature.
300 For example if the requirements for C<replicated> are not available, the
301 returned string would look like:
303 Moose >= 0.98, MooseX::Types >= 0.21, namespace::clean (see $class for details)
305 The author is expected to prepend the necessary text to this message before
306 returning the actual error seen by the user.
309 '=head2 req_errorlist_for',
311 '=item Arguments: $group_name',
312 '=item Returns: \%list_of_loaderrors_per_module',
315 Returns a hashref containing the actual errors that occured while attempting
316 to load each module in the requirement group.
322 $fn =~ s/\.pm$/\.pod/;
324 open (my $fh, '>', $fn) or croak "Unable to write to $fn: $!";
325 print $fh join ("\n\n", @chunks);