initial parameterised role to get rid of WithFoos
[dbsrgits/DBIx-Class-DeploymentHandler.git] / lib / DBIx / Class / DeploymentHandler.pm
index 3524615..d7583c1 100644 (file)
 package DBIx::Class::DeploymentHandler;
 
+# ABSTRACT: Extensible DBIx::Class deployment
+
 use Moose;
 
 extends 'DBIx::Class::DeploymentHandler::Dad';
 # a single with would be better, but we can't do that
 # see: http://rt.cpan.org/Public/Bug/Display.html?id=46347
 with 'DBIx::Class::DeploymentHandler::WithSqltDeployMethod',
-     'DBIx::Class::DeploymentHandler::WithDatabaseToSchemaVersions',
-     'DBIx::Class::DeploymentHandler::WithStandardVersionStorage';
+     #'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => {
+                       #interface_role       => 'DBIx::Class::DeploymentHandler::HandlesVersionStorage',
+                       #class_name           => 'DBIx::Class::DeploymentHandler::DeployMethod::SQL::Translator',
+                       #delegate_name        => 'deploy_method',
+                       #attributes_to_assume => ['schema'],
+                       #attributes_to_copy   => [qw( databases upgrade_directory sql_translator_args )],
+         #},
+         'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => {
+                       interface_role       => 'DBIx::Class::DeploymentHandler::HandlesVersioning',
+                       class_name           => 'DBIx::Class::DeploymentHandler::VersionHandler::Monotonic',
+                       delegate_name        => 'version_handler',
+                       attributes_to_assume => [qw( database_version schema_version to_version )],
+         },
+     'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => {
+                       interface_role       => 'DBIx::Class::DeploymentHandler::HandlesVersionStorage',
+                       class_name           => 'DBIx::Class::DeploymentHandler::VersionStorage::Standard',
+                       delegate_name        => 'version_storage',
+                       attributes_to_assume => ['schema'],
+         };
 with 'DBIx::Class::DeploymentHandler::WithReasonableDefaults';
 
+sub prepare_version_storage_install {
+  my $self = shift;
+
+  $self->prepare_resultsource_install(
+    $self->version_storage->version_rs->result_source
+  );
+}
+
+sub install_version_storage {
+  my $self = shift;
+
+  $self->install_resultsource(
+    $self->version_storage->version_rs->result_source
+  );
+}
+
+sub prepare_install {
+   $_[0]->prepare_deploy;
+   $_[0]->prepare_version_storage_install;
+}
+
 __PACKAGE__->meta->make_immutable;
 
 1;
 
+#vim: ts=2 sw=2 expandtab
+
 __END__
 
-vim: ts=2 sw=2 expandtab
+=head1 SYNOPSIS
+
+ use aliased 'DBIx::Class::DeploymentHandler' => 'DH';
+ my $s = My::Schema->connect(...);
+
+ my $dh = DH->new({
+   schema              => $s,
+   databases           => 'SQLite',
+   sql_translator_args => { add_drop_table => 0 },
+ });
+
+ $dh->prepare_install;
+
+ $dh->install;
+
+or for upgrades:
+
+ use aliased 'DBIx::Class::DeploymentHandler' => 'DH';
+ my $s = My::Schema->connect(...);
+
+ my $dh = DH->new({
+   schema              => $s,
+   databases           => 'SQLite',
+   sql_translator_args => { add_drop_table => 0 },
+ });
+
+ $dh->prepare_upgrade(1, 2);
+
+ $dh->upgrade;
+
+=head1 DESCRIPTION
+
+C<DBIx::Class::DeploymentHandler> is, as it's name suggests, a tool for
+deploying and upgrading databases with L<DBIx::Class>.  It is designed to be
+much more flexible than L<DBIx::Class::Schema::Versioned>, hence the use of
+L<Moose> and lots of roles.
+
+C<DBIx::Class::DeploymentHandler> itself is just a recommended set of roles
+that we think will not only work well for everyone, but will also yeild the
+best overall mileage.  Each role it uses has it's own nuances and
+documentation, so I won't describe all of them here, but here are a few of the
+major benefits over how L<DBIx::Class::Schema::Versioned> worked (and
+L<DBIx::Class::DeploymentHandler::Deprecated> tries to maintain compatibility
+with):
+
+=over
+
+=item *
+
+Downgrades in addition to upgrades.
+
+=item *
+
+Multiple sql files files per upgrade/downgrade/install.
+
+=item *
+
+Perl scripts allowed for upgrade/downgrade/install.
+
+=item *
+
+Just one set of files needed for upgrade, unlike before where one might need
+to generate C<factorial(scalar @versions)>, which is just silly.
+
+=item *
+
+And much, much more!
+
+=back
+
+That's really just a taste of some of the differences.  Check out each role for
+all the details.
+
+=head1 WHERE IS ALL THE DOC?!
+
+C<DBIx::Class::DeploymentHandler> extends
+L<DBIx::Class::DeploymentHandler::Dad>, so that's probably the first place to
+look when you are trying to figure out how everything works.
+
+Next would be to look at all the roles that fill in the blanks that
+L<DBIx::Class::DeploymentHandler::Dad> expects to be filled.  They would be
+L<DBIx::Class::DeploymentHandler::WithSqltDeployMethod>,
+L<DBIx::Class::DeploymentHandler::WithMonotonicVersions>,
+L<DBIx::Class::DeploymentHandler::WithStandardVersionStorage>, and
+L<DBIx::Class::DeploymentHandler::WithReasonableDefaults>.
+
+=method prepare_version_storage_install
+
+ $dh->prepare_version_storage_install
+
+Creates the needed C<.sql> file to install the version storage and not the rest
+of the tables
+
+=method prepare_install
+
+ $dh->prepare_install
+
+First prepare all the tables to be installed and the prepare just the version
+storage
+
+=method install_version_storage
+
+ $dh->install_version_storage
+
+Install the version storage and not the rest of the tables
+
+=head1 THIS SUCKS
+
+You started your project and weren't using C<DBIx::Class::DeploymentHandler>?
+Lucky for you I had you in mind when I wrote this doc.
+
+First off, you'll want to just install the C<version_storage>:
+
+ my $s = My::Schema->connect(...);
+ my $dh = DBIx::Class::DeploymentHandler({ schema => $s });
+
+ $dh->prepare_version_storage_install;
+ $dh->install_version_storage;
+
+Then set your database version:
+
+ $dh->add_database_version({ version => $s->version });
+
+Now you should be able to use C<DBIx::Class::DeploymentHandler> like normal!
+
+=head1 DONATIONS
+
+If you'd like to thank me for the work I've done on this module, don't give me
+a donation. I spend a lot of free time creating free software, but I do it
+because I love it.
+
+Instead, consider donating to someone who might actually need it.  Obviously
+you should do research when donating to a charity, so don't just take my word
+on this.  I like Children's Survival Fund:
+L<http://www.childrenssurvivalfund.org>, but there are a host of other
+charities that can do much more good than I will with your money.