use strict;
use warnings;
-use base qw/DBIx::Class::Schema Class::Data::Accessor/;
+use base qw/DBIx::Class::Schema Class::Accessor::Grouped/;
+use MRO::Compat;
+use mro 'c3';
use Carp::Clan qw/^DBIx::Class/;
-use UNIVERSAL::require;
-use Class::C3;
-use Scalar::Util qw/ weaken /;
+use Scalar::Util 'weaken';
+use Sub::Name 'subname';
+use DBIx::Class::Schema::Loader::Utils 'array_eq';
+use namespace::clean;
# Always remember to do all digits for the version even if they're 0
# i.e. first release of 0.XX *must* be 0.XX000. This avoids fBSD ports
# brain damage and presumably various other packaging systems too
-our $VERSION = '0.03012';
-
-__PACKAGE__->mk_classaccessor('dump_to_dir');
-__PACKAGE__->mk_classaccessor('loader');
-__PACKAGE__->mk_classaccessor('_loader_args');
+our $VERSION = '0.07011';
+
+__PACKAGE__->mk_group_accessors('inherited', qw/
+ _loader_args
+ dump_to_dir
+ _loader_invoked
+ _loader
+ loader_class
+ naming
+ use_namespaces
+/);
+__PACKAGE__->_loader_args({});
=head1 NAME
-DBIx::Class::Schema::Loader - Dynamic definition of a DBIx::Class::Schema
+DBIx::Class::Schema::Loader - Create a DBIx::Class::Schema based on a database
=head1 SYNOPSIS
+ ### use this module to generate a set of class files
+
+ # in a script
+ use DBIx::Class::Schema::Loader qw/ make_schema_at /;
+ make_schema_at(
+ 'My::Schema',
+ { debug => 1,
+ dump_directory => './lib',
+ },
+ [ 'dbi:Pg:dbname="foo"', 'myuser', 'mypassword',
+ { loader_class => 'MyLoader' } # optionally
+ ],
+ );
+
+ # from the command line or a shell script with dbicdump (distributed
+ # with this module). Do `perldoc dbicdump` for usage.
+ dbicdump -o dump_directory=./lib \
+ -o components='["InflateColumn::DateTime"]' \
+ -o debug=1 \
+ My::Schema \
+ 'dbi:Pg:dbname=foo' \
+ myuser \
+ mypassword
+
+ ### or generate and load classes at runtime
+ # note: this technique is not recommended
+ # for use in production code
+
package My::Schema;
use base qw/DBIx::Class::Schema::Loader/;
__PACKAGE__->loader_options(
- relationships => 1,
constraint => '^foo.*',
# debug => 1,
);
- # in seperate application code ...
+ #### in application code elsewhere:
use My::Schema;
=head1 DESCRIPTION
DBIx::Class::Schema::Loader automates the definition of a
-L<DBIx::Class::Schema> by scanning database table definitions and
-setting up the columns, primary keys, and relationships.
+L<DBIx::Class::Schema> by scanning database table definitions and setting up
+the columns, primary keys, unique constraints and relationships.
+
+See L<dbicdump> for the C<dbicdump> utility.
-DBIx::Class::Schema::Loader currently supports only the DBI storage type.
-It has explicit support for L<DBD::Pg>, L<DBD::mysql>, L<DBD::DB2>, and
-L<DBD::SQLite>. Other DBI drivers may function to a greater or lesser
-degree with this loader, depending on how much of the DBI spec they
-implement, and how standard their implementation is. Patches to make
-other DBDs work correctly welcome.
+DBIx::Class::Schema::Loader currently supports only the DBI storage type. It
+has explicit support for L<DBD::Pg>, L<DBD::mysql>, L<DBD::DB2>,
+L<DBD::Firebird>, L<DBD::InterBase>, L<DBD::Informix>, L<DBD::SQLAnywhere>,
+L<DBD::SQLite>, L<DBD::Sybase> (for Sybase ASE and MSSSQL), L<DBD::ODBC> (for
+MSSQL, MSAccess, Firebird and SQL Anywhere) L<DBD::ADO> (for MSSQL and
+MSAccess) and L<DBD::Oracle>. Other DBI drivers may function to a greater or
+lesser degree with this loader, depending on how much of the DBI spec they
+implement, and how standard their implementation is.
+
+Patches to make other DBDs work correctly welcome.
See L<DBIx::Class::Schema::Loader::DBI::Writing> for notes on writing
your own vendor-specific subclass for an unsupported DBD driver.
-This module requires L<DBIx::Class> 0.06 or later, and obsoletes
-the older L<DBIx::Class::Loader>.
-
-This module is designed more to get you up and running quickly against
-an existing database, or to be effective for simple situations, rather
-than to be what you use in the long term for a complex database/project.
+This module requires L<DBIx::Class> 0.08127 or later, and obsoletes the older
+L<DBIx::Class::Loader>.
-That being said, transitioning your code from a Schema generated by this
-module to one that doesn't use this module should be straightforward and
-painless (as long as you're not using any methods that are now deprecated
-in this document), so don't shy away from it just for fears of the
-transition down the road.
+See L<DBIx::Class::Schema::Loader::Base> for available options.
=head1 METHODS
+=head2 loader
+
+The loader object, as class data on your Schema. For methods available see
+L<DBIx::Class::Schema::Loader::Base> and L<DBIx::Class::Schema::Loader::DBI>.
+
+=cut
+
+sub loader {
+ my $self = shift;
+ $self->_loader(@_);
+}
+
+=head2 loader_class
+
+=over 4
+
+=item Argument: $loader_class
+
+=back
+
+Set the loader class to be instantiated when L</connection> is called.
+If the classname starts with "::", "DBIx::Class::Schema::Loader" is
+prepended. Defaults to L<DBIx::Class::Schema/storage_type> (which must
+start with "::" when using L<DBIx::Class::Schema::Loader>).
+
+This is mostly useful for subclassing existing loaders or in conjunction
+with L</dump_to_dir>.
+
=head2 loader_options
+=over 4
+
+=item Argument: \%loader_options
+
+=back
+
Example in Synopsis above demonstrates a few common arguments. For
detailed information on all of the arguments, most of which are
only useful in fairly complex scenarios, see the
L<DBIx::Class::Schema::Loader::Base> documentation.
-This method is *required* at this time, for backwards compatibility
-reasons. If you do not wish to change any options, just call it
-with an empty argument list during schema class initialization.
-
-Setting these options explicitly via this method B<after> calling
-C<connection> is deprecated and will stop working in version 0.04000.
-For now the code merely warns about this condition.
-
-The preferred way of doing things is to either call C<loader_options>
-before any connection is made, or embed the C<loader_options> in
-the connection information itself as shown below.
+If you intend to use C<loader_options>, you must call
+C<loader_options> before any connection is made, or embed the
+C<loader_options> in the connection information itself as shown
+below. Setting C<loader_options> after the connection has
+already been made is useless.
=cut
sub loader_options {
my $self = shift;
-
- my %args = (ref $_[0] eq 'HASH') ? %{$_[0]} : @_;
-
- my $class = ref $self || $self;
- $args{schema} = $self;
- $args{schema_class} = $class;
- weaken($args{schema}) if ref $self;
+ my %args = (ref $_[0] eq 'HASH') ? %{$_[0]} : @_;
$self->_loader_args(\%args);
- if($self->storage && !$class->loader) {
- warn "Do not set loader_options after specifying the connection info,"
- . " this will be unsupported in 0.04000";
- $self->_invoke_loader;
- }
$self;
}
my $self = shift;
my $class = ref $self || $self;
- $self->_loader_args->{dump_directory} ||= $self->dump_to_dir;
+ my $args = $self->_loader_args;
+
+ # set up the schema/schema_class arguments
+ $args->{schema} = $self;
+ $args->{schema_class} = $class;
+ weaken($args->{schema}) if ref $self;
+ $args->{dump_directory} ||= $self->dump_to_dir;
+ $args->{naming} = $self->naming if $self->naming;
+ $args->{use_namespaces} = $self->use_namespaces if defined $self->use_namespaces;
# XXX this only works for relative storage_type, like ::DBI ...
- my $impl = "DBIx::Class::Schema::Loader" . $self->storage_type;
- $impl->require or
- croak qq/Could not load storage_type loader "$impl": / .
- qq/"$UNIVERSAL::require::ERROR"/;
+ my $loader_class = $self->loader_class;
+ if ($loader_class) {
+ $loader_class = "DBIx::Class::Schema::Loader${loader_class}" if $loader_class =~ /^::/;
+ $args->{loader_class} = $loader_class;
+ };
- # XXX in the future when we get rid of ->loader, the next two
- # lines can be replaced by "$impl->new(%{$self->_loader_args})->load;"
- $class->loader($impl->new(%{$self->_loader_args}));
- $class->loader->load;
+ my $impl = $loader_class || "DBIx::Class::Schema::Loader" . $self->storage_type;
+ eval { $self->ensure_class_loaded($impl) };
+ croak qq/Could not load loader_class "$impl": "$@"/ if $@;
+
+ $self->loader($impl->new(%$args));
+ $self->loader->load;
+ $self->_loader_invoked(1);
$self;
}
=head2 connection
-See L<DBIx::Class::Schema> for basic usage.
+=over 4
+
+=item Arguments: @args
-If the final argument is a hashref, and it contains a key C<loader_options>,
-that key will be deleted, and its value will be used for the loader options,
-just as if set via the L</loader_options> method above.
+=item Return Value: $new_schema
+
+=back
+
+See L<DBIx::Class::Schema/connection> for basic usage.
+
+If the final argument is a hashref, and it contains the keys C<loader_options>
+or C<loader_class>, those keys will be deleted, and their values value will be
+used for the loader options or class, respectively, just as if set via the
+L</loader_options> or L</loader_class> methods above.
The actual auto-loading operation (the heart of this module) will be invoked
as soon as the connection information is defined.
=cut
sub connection {
- my $self = shift;
+ my $self = shift;
+ my $class = ref $self || $self;
if($_[-1] && ref $_[-1] eq 'HASH') {
- if(my $loader_opts = delete $_[-1]->{loader_options}) {
- $self->loader_options($loader_opts);
- pop @_ if !keys %{$_[-1]};
+ for my $option (qw/loader_class loader_options/) {
+ if(my $value = delete $_[-1]->{$option}) {
+ $self->$option($value);
+ }
}
+ pop @_ if !keys %{$_[-1]};
}
- $self = $self->next::method(@_);
+ # Make sure we inherit from schema_base_class and load schema_components
+ # before connecting.
+ require DBIx::Class::Schema::Loader::Base;
+ my $temp_loader = DBIx::Class::Schema::Loader::Base->new(
+ %{ $self->_loader_args },
+ schema => $self,
+ naming => 'current',
+ use_namespaces => 1,
+ );
+
+ my $modify_isa = 0;
+ my @components;
- my $class = ref $self || $self;
- if($self->_loader_args && !$class->loader) {
+ if ($temp_loader->schema_base_class || $temp_loader->schema_components) {
+ @components = @{ $temp_loader->schema_components }
+ if $temp_loader->schema_components;
+
+ push @components, ('+'.$temp_loader->schema_base_class)
+ if $temp_loader->schema_base_class;
+
+ my $class_isa = do {
+ no strict 'refs';
+ \@{"${class}::ISA"};
+ };
+
+ my @component_classes = map {
+ /^\+/ ? substr($_, 1, length($_) - 1) : "DBIx::Class::$_"
+ } @components;
+
+ $modify_isa++ if not array_eq([ @$class_isa[0..(@components-1)] ], \@component_classes)
+ }
+
+ if ($modify_isa) {
+ $class->load_components(@components);
+
+ # This hack is necessary because we changed @ISA of $self through
+ # ->load_components and we are now in a different place in the mro.
+ no warnings 'redefine';
+
+ local *connection = subname __PACKAGE__.'::connection' => sub {
+ my $self = shift;
+ $self->next::method(@_);
+ };
+
+ my @linear_isa = @{ mro::get_linear_isa($class) };
+
+ my $next_method;
+
+ foreach my $i (1..$#linear_isa) {
+ no strict 'refs';
+ $next_method = *{$linear_isa[$i].'::connection'}{CODE};
+ last if $next_method;
+ }
+
+ $self = $self->$next_method(@_);
+ }
+ else {
+ $self = $self->next::method(@_);
+ }
+
+ if(!$class->_loader_invoked) {
$self->_invoke_loader
}
=head2 clone
-See L<DBIx::Class::Schema>.
+See L<DBIx::Class::Schema/clone>.
=cut
=head2 dump_to_dir
-Argument: directory name.
+=over 4
+
+=item Argument: $directory
+
+=back
Calling this as a class method on either L<DBIx::Class::Schema::Loader>
-or any derived schema class will cause all affected schemas to dump
+or any derived schema class will cause all schemas to dump
manual versions of themselves to the named directory when they are
loaded. In order to be effective, this must be set before defining a
connection on this schema class or any derived object (as the loading
sub import {
my $self = shift;
+
return if !@_;
+
+ my $cpkg = (caller)[0];
+
foreach my $opt (@_) {
if($opt =~ m{^dump_to_dir:(.*)$}) {
$self->dump_to_dir($1)
}
elsif($opt eq 'make_schema_at') {
no strict 'refs';
- my $cpkg = (caller)[0];
*{"${cpkg}::make_schema_at"} = \&make_schema_at;
}
+ elsif($opt eq 'naming') {
+ no strict 'refs';
+ *{"${cpkg}::naming"} = sub { $self->naming(@_) };
+ }
+ elsif($opt eq 'use_namespaces') {
+ no strict 'refs';
+ *{"${cpkg}::use_namespaces"} = sub { $self->use_namespaces(@_) };
+ }
}
}
=head2 make_schema_at
-This simple function allows one to create a Loader-based schema
-in-memory on the fly without any on-disk class files of any
-kind. When used with the C<dump_directory> option, you can
-use this to generate a rough draft manual schema from a dsn
-without the intermediate step of creating a physical Loader-based
-schema class.
+=over 4
+
+=item Arguments: $schema_class_name, \%loader_options, \@connect_info
+
+=item Return Value: $schema_class_name
+
+=back
-The return value is the input class name.
+This function creates a DBIx::Class schema from an existing RDBMS
+schema. With the C<dump_directory> option, generates a set of
+DBIx::Class classes from an existing database schema read from the
+given dsn. Without a C<dump_directory>, creates schema classes in
+memory at runtime without generating on-disk class files.
-This function can be exported/imported by the normal means, as
-illustrated in these Examples:
+For a complete list of supported loader_options, see
+L<DBIx::Class::Schema::Loader::Base>
+
+The last hashref in the C<\@connect_info> can specify the L</loader_class>.
+
+This function can be imported in the usual way, as illustrated in
+these Examples:
# Simple example, creates as a new class 'New::Schema::Name' in
# memory in the running perl interpreter.
use DBIx::Class::Schema::Loader qw/ make_schema_at /;
make_schema_at(
'New::Schema::Name',
- { relationships => 1, debug => 1 },
- [ 'dbi:Pg:dbname="foo"','postgres' ],
+ { debug => 1 },
+ [ 'dbi:Pg:dbname="foo"','postgres','',
+ { loader_class => 'MyLoader' } # optionally
+ ],
);
- # Complex: dump loaded schema to disk, all from the commandline:
- perl -MDBIx::Class::Schema::Loader=make_schema_at,dump_to_dir:./lib -e 'make_schema_at("New::Schema::Name", { relationships => 1 }, [ "dbi:Pg:dbname=foo","postgres" ])'
-
- # Same, but inside a script, and using a different way to specify the
- # dump directory:
+ # Inside a script, specifying a dump directory in which to write
+ # class files
use DBIx::Class::Schema::Loader qw/ make_schema_at /;
make_schema_at(
'New::Schema::Name',
- { relationships => 1, debug => 1, dump_directory => './lib' },
- [ 'dbi:Pg:dbname="foo"','postgres' ],
+ { debug => 1, dump_directory => './lib' },
+ [ 'dbi:Pg:dbname="foo"','postgres','',
+ { loader_class => 'MyLoader' } # optionally
+ ],
);
+The last hashref in the C<\@connect_info> is checked for loader arguments such
+as C<loader_options> and C<loader_class>, see L</connection> for more details.
+
=cut
sub make_schema_at {
@{$target . '::ISA'} = qw/DBIx::Class::Schema::Loader/;
}
+ eval { $target->_loader_invoked(0) };
+
$target->loader_options($opts);
$target->connection(@$connect_info);
}
-=head1 EXAMPLE
+=head2 rescan
-Using the example in L<DBIx::Class::Manual::ExampleSchema> as a basis
-replace the DB::Main with the following code:
+=over 4
- package DB::Main;
+=item Return Value: @new_monikers
- use base qw/DBIx::Class::Schema::Loader/;
+=back
- __PACKAGE__->loader_options(
- relationships => 1,
- debug => 1,
- );
- __PACKAGE__->connection('dbi:SQLite:example.db');
+Re-scans the database for newly added tables since the initial
+load, and adds them to the schema at runtime, including relationships,
+etc. Does not process drops or changes.
- 1;
+Returns a list of the new monikers added.
-and remove the Main directory tree (optional). Every thing else
-should work the same
+=cut
-=head1 DEPRECATED METHODS
+sub rescan { my $self = shift; $self->loader->rescan($self) }
-You don't need to read anything in this section unless you're upgrading
-code that was written against pre-0.03 versions of this module. This
-version is intended to be backwards-compatible with pre-0.03 code, but
-will issue warnings about your usage of deprecated features/methods.
+=head2 naming
-B<All of these deprecated methods will dissappear in version 0.04000>,
-and converting code that uses these methods should be trivial.
+=over 4
-=head2 load_from_connection
+=item Arguments: \%opts | $ver
-This deprecated method is now roughly an alias for L</loader_options>.
+=back
-For now, using this method will invoke the legacy behavior for
-backwards compatibility, and merely emit a warning about upgrading
-your code.
+Controls the naming options for backward compatibility, see
+L<DBIx::Class::Schema::Loader::Base/naming> for details.
-It also reverts the default inflection scheme to
-use L<Lingua::EN::Inflect> just like pre-0.03 versions of this
-module did.
+To upgrade a dynamic schema, use:
-You can force these legacy inflections with the
-option L<DBIx::Class::Schema::Loader::Base/legacy_default_inflections>,
-even after switch over to the preferred L</loader_options> way of doing
-things. That option will not go away until at least 0.05.
+ __PACKAGE__->naming('current');
-See the source of this method for more details.
+Can be imported into your dump script and called as a function as well:
-=cut
+ naming('v4');
-sub load_from_connection {
- my ($self, %args) = @_;
+=head2 use_namespaces
- my $cmds_ver = $Catalyst::Model::DBIC::Schema::VERSION;
- if($cmds_ver) {
- if($cmds_ver < 0.14) {
- warn 'You should upgrade your installation of'
- . ' Catalyst::Model::DBIC::Schema to 0.14 or higher, then:';
- }
- warn 'You should regenerate your Model files, which may eliminate'
- . ' the following deprecation warning:';
- }
- warn 'load_from_connection deprecated, and will dissappear in 0.04000, '
- . 'please [re-]read the [new] DBIx::Class::Schema::Loader '
- . 'documentation';
-
- # Support the old connect_info / dsn / etc args...
- $args{connect_info} = [
- delete $args{dsn},
- delete $args{user},
- delete $args{password},
- delete $args{options},
- ] if $args{dsn};
-
- $self->connection(@{delete $args{connect_info}})
- if $args{connect_info};
-
- $self->loader_options('legacy_default_inflections' => 1, %args);
-}
+=over 4
-=head2 loader
+=item Arguments: 1|0
+
+=back
+
+Controls the use_namespaces options for backward compatibility, see
+L<DBIx::Class::Schema::Loader::Base/use_namespaces> for details.
-This is an accessor in the generated Schema class for accessing
-the L<DBIx::Class::Schema::Loader::Base> -based loader object
-that was used during construction. See the
-L<DBIx::Class::Schema::Loader::Base> docs for more information
-on the available loader methods there.
+To upgrade a dynamic schema, use:
-This accessor is deprecated. Do not use it. Anything you can
-get from C<loader>, you can get via the normal L<DBIx::Class::Schema>
-methods, and your code will be more robust and forward-thinking
-for doing so.
+ __PACKAGE__->use_namespaces(1);
-If you're already using C<loader> in your code, make an effort
-to get rid of it. If you think you've found a situation where it
-is necessary, let me know and we'll see what we can do to remedy
-that situation.
+Can be imported into your dump script and called as a function as well:
-In some future version, this accessor *will* disappear. It was
-apparently quite a design/API mistake to ever have exposed it to
-user-land in the first place, all things considered.
+ use_namespaces(1);
=head1 KNOWN ISSUES
=head2 Multiple Database Schemas
-Currently the loader is limited to working within a single schema
-(using the database vendors' definition of "schema"). If you
-have a multi-schema database with inter-schema relationships (which
-is easy to do in PostgreSQL or DB2 for instance), you only get to
-automatically load the tables of one schema, and any relationships
-to tables in other schemas will be silently ignored.
+See L<DBIx::Class::Schema::Loader::Base/db_schema>.
-At some point in the future, an intelligent way around this might be
-devised, probably by allowing the C<db_schema> option to be an
-arrayref of schemas to load.
+=head1 ACKNOWLEDGEMENTS
-In "normal" L<DBIx::Class::Schema> usage, manually-defined
-source classes and relationships have no problems crossing vendor schemas.
+Matt S Trout, all of the #dbix-class folks, and everyone who's ever sent
+in a bug report or suggestion.
+
+Based on L<DBIx::Class::Loader> by Sebastian Riedel
+
+Based upon the work of IKEBE Tomohiro
=head1 AUTHOR
-Brandon Black, C<blblack@gmail.com>
+blblack: Brandon Black <blblack@gmail.com>
-Based on L<DBIx::Class::Loader> by Sebastian Riedel
+=head1 CONTRIBUTORS
-Based upon the work of IKEBE Tomohiro
+ilmari: Dagfinn Ilmari MannsE<aring>ker <ilmari@ilmari.org>
-=head1 THANK YOU
+arcanez: Justin Hunter <justin.d.hunter@gmail.com>
-Matt S Trout, all of the #dbix-class folks, and everyone who's ever sent
-in a bug report or suggestion.
+ash: Ash Berlin <ash@cpan.org>
+
+btilly: Ben Tilly <btilly@gmail.com>
+
+Caelum: Rafael Kitover <rkitover@cpan.org>
+
+TSUNODA Kazuya <drk@drk7.jp>
+
+rbo: Robert Bohne <rbo@cpan.org>
+
+ribasushi: Peter Rabbitson <ribasushi@cpan.org>
+
+gugu: Andrey Kostenko <a.kostenko@rambler-co.ru>
+
+jhannah: Jay Hannah <jay@jays.net>
+
+rbuels: Robert Buels <rmb32@cornell.edu>
+
+timbunce: Tim Bunce <timb@cpan.org>
+
+mst: Matt S. Trout <mst@shadowcatsystems.co.uk>
+
+mstratman: Mark A. Stratman <stratman@gmail.com>
+
+kane: Jos Boumans <kane@cpan.org>
+
+waawaamilk: Nigel McNie <nigel@mcnie.name>
+
+acmoore: Andrew Moore <amoore@cpan.org>
+
+bphillips: Brian Phillips <bphillips@cpan.org>
+
+schwern: Michael G. Schwern <mschwern@cpan.org>
+
+hobbs: Andrew Rodland <arodland@cpan.org>
+
+domm: Thomas Klausner <domm@plix.at>
+
+spb: Stephen Bennett <spb@exherbo.org>
+
+Matias E. Fernandez <mfernandez@pisco.ch>
+
+alnewkirk: Al Newkirk <awncorp@cpan.org>
+
+... and lots of other folks. If we forgot you, please write the current
+maintainer or RT.
+
+=head1 COPYRIGHT & LICENSE
-=head1 LICENSE
+Copyright (c) 2006 - 2009 by the aforementioned
+L<DBIx::Class::Schema::Loader/AUTHOR> and
+L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
This library is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
1;
+# vim:et sts=4 sw=4 tw=0:
projects / dbsrgits/DBIx-Class-Schema-Loader.git / blobdiff