X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FSchema%2FLoader.pm;h=ea0fe2cc7689d02f4f144097e512979a0f839a4d;hb=18eb280f9b71785a12c105299f813358faa47143;hp=abceb5133348ad35c92385c432fa7bea7fabc905;hpb=b024fa56782d3366bc13367876e7980555890dcc;p=dbsrgits%2FDBIx-Class-Schema-Loader.git diff --git a/lib/DBIx/Class/Schema/Loader.pm b/lib/DBIx/Class/Schema/Loader.pm index abceb51..ea0fe2c 100644 --- a/lib/DBIx/Class/Schema/Loader.pm +++ b/lib/DBIx/Class/Schema/Loader.pm @@ -3,14 +3,18 @@ package DBIx::Class::Schema::Loader; use strict; use warnings; use base qw/DBIx::Class::Schema Class::Accessor::Grouped/; -use Carp::Clan qw/^DBIx::Class/; +use MRO::Compat; use mro 'c3'; -use Scalar::Util qw/ weaken /; +use Carp::Clan qw/^DBIx::Class/; +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 = '0.07010'; +our $VERSION = '0.07018'; __PACKAGE__->mk_group_accessors('inherited', qw/ _loader_args @@ -25,7 +29,7 @@ __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 @@ -46,6 +50,7 @@ DBIx::Class::Schema::Loader - Dynamic definition of a DBIx::Class::Schema # 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' \ @@ -75,15 +80,17 @@ DBIx::Class::Schema::Loader - Dynamic definition of a DBIx::Class::Schema =head1 DESCRIPTION DBIx::Class::Schema::Loader automates the definition of a -L by scanning database table definitions and -setting up the columns, primary keys, and relationships. +L by scanning database table definitions and setting up +the columns, primary keys, unique constraints and relationships. See L for the C utility. -DBIx::Class::Schema::Loader currently supports only the DBI storage type. It +DBIx::Class::Schema::Loader currently supports only the DBI storage type. It has explicit support for L, L, L, +L, L, L, L, L, L (for Sybase ASE and MSSSQL), L (for -MSSQL) and L. Other DBI drivers may function to a greater or +MSSQL, MSAccess, Firebird and SQL Anywhere) L (for MSSQL and +MSAccess) and L. 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. @@ -92,20 +99,25 @@ Patches to make other DBDs work correctly welcome. See L for notes on writing your own vendor-specific subclass for an unsupported DBD driver. -This module requires L 0.07006 or later, and obsoletes -the older L. - -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 0.08127 or later, and obsoletes the older +L. -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, so don't shy away from it just for fears of the transition down -the road. +See L for available options. =head1 METHODS +=head2 loader + +The loader object, as class data on your Schema. For methods available see +L and L. + +=cut + +sub loader { + my $self = shift; + $self->_loader(@_); +} + =head2 loader_class =over 4 @@ -177,8 +189,8 @@ sub _invoke_loader { eval { $self->ensure_class_loaded($impl) }; croak qq/Could not load loader_class "$impl": "$@"/ if $@; - $self->_loader($impl->new(%$args)); - $self->_loader->load; + $self->loader($impl->new(%$args)); + $self->loader->load; $self->_loader_invoked(1); $self; @@ -207,10 +219,11 @@ 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') { - for my $option (qw/ loader_class loader_options result_base_class schema_base_class/) { + for my $option (qw/loader_class loader_options/) { if(my $value = delete $_[-1]->{$option}) { $self->$option($value); } @@ -218,9 +231,66 @@ sub connection { pop @_ if !keys %{$_[-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 $modify_isa = 0; + my @components; + + if ($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(@_); + } - my $class = ref $self || $self; if(!$class->_loader_invoked) { $self->_invoke_loader } @@ -409,7 +479,7 @@ Returns a list of the new monikers added. =cut -sub rescan { my $self = shift; $self->_loader->rescan($self) } +sub rescan { my $self = shift; $self->loader->rescan($self) } =head2 naming @@ -453,19 +523,7 @@ Can be imported into your dump script and called as a function as well: =head2 Multiple Database Schemas -Currently the loader is limited to working within a single schema -(using the underlying RDBMS's 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 currently can only -automatically load the tables of one schema, and relationships to -tables in other schemas will be silently ignored. - -At some point in the future, an intelligent way around this might be -devised, probably by allowing the C option to be an -arrayref of schemas to load. - -In "normal" L usage, manually-defined -source classes and relationships have no problems crossing vendor schemas. +See L. =head1 ACKNOWLEDGEMENTS @@ -488,6 +546,8 @@ arcanez: Justin Hunter ash: Ash Berlin +btilly: Ben Tilly + Caelum: Rafael Kitover TSUNODA Kazuya @@ -500,6 +560,8 @@ gugu: Andrey Kostenko jhannah: Jay Hannah +jnap: John Napiorkowski + rbuels: Robert Buels timbunce: Tim Bunce @@ -518,6 +580,8 @@ bphillips: Brian Phillips schwern: Michael G. Schwern +SineSwiper: Brendan Byrd + hobbs: Andrew Rodland domm: Thomas Klausner @@ -526,6 +590,8 @@ spb: Stephen Bennett Matias E. Fernandez +alnewkirk: Al Newkirk + ... and lots of other folks. If we forgot you, please write the current maintainer or RT. @@ -540,7 +606,8 @@ the same terms as Perl itself. =head1 SEE ALSO -L, L +L, L, L, +L =cut