dbix::class::schema::loader::relbuilder(3pm) [debian man page]

DBIx::Class::Schema::Loader::RelBuilder(3pm)		User Contributed Perl Documentation	      DBIx::Class::Schema::Loader::RelBuilder(3pm)

NAME

       DBIx::Class::Schema::Loader::RelBuilder - Builds relationships for DBIx::Class::Schema::Loader

SYNOPSIS

       See DBIx::Class::Schema::Loader and DBIx::Class::Schema::Loader::Base.

DESCRIPTION

       This class builds relationships for DBIx::Class::Schema::Loader.  This is module is not (yet) for external use.

METHODS

   new
       Arguments: $loader object

   generate_code
       Arguments:

	   [
	       [ local_moniker1 (scalar), fk_info1 (arrayref), uniq_info1 (arrayref) ]
	       [ local_moniker2 (scalar), fk_info2 (arrayref), uniq_info2 (arrayref) ]
	       ...
	   ]

       This generates the code for the relationships of each table.

       "local_moniker" is the moniker name of the table which had the REFERENCES statements.  The fk_info arrayref's contents should take the
       form:

	   [
	       {
		   local_table	  => 'some_table',
		   local_moniker  => 'SomeTable',
		   local_columns  => [ 'col2', 'col3' ],
		   remote_table   => 'another_table_moniker',
		   remote_moniker => 'AnotherTableMoniker',
		   remote_columns => [ 'col5', 'col7' ],
	       },
	       {
		   local_table	  => 'some_other_table',
		   local_moniker  => 'SomeOtherTable',
		   local_columns  => [ 'col1', 'col4' ],
		   remote_table   => 'yet_another_table_moniker',
		   remote_moniker => 'YetAnotherTableMoniker',
		   remote_columns => [ 'col1', 'col2' ],
	       },
	       # ...
	   ],

       The uniq_info arrayref's contents should take the form:

	   [
	       [
		   uniq_constraint_name 	=> [ 'col1', 'col2' ],
	       ],
	       [
		   another_uniq_constraint_name => [ 'col1', 'col2' ],
	       ],
	   ],

       This method will return the generated relationships as a hashref keyed on the class names.  The values are arrayrefs of hashes containing
       method name and arguments, like so:

	 {
	     'Some::Source::Class' => [
		 { method => 'belongs_to', arguments => [ 'col1', 'Another::Source::Class' ],
		 { method => 'has_many', arguments => [ 'anothers', 'Yet::Another::Source::Class', 'col15' ],
	     ],
	     'Another::Source::Class' => [
		 # ...
	     ],
	     # ...
	 }

AUTHOR

       See "AUTHOR" in DBIx::Class::Schema::Loader and "CONTRIBUTORS" in DBIx::Class::Schema::Loader.

LICENSE

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-06-08			      DBIx::Class::Schema::Loader::RelBuilder(3pm)

Check Out this Related Man Page

DBIx::Class::Schema::Loader::DBI::Writing(3pm)		User Contributed Perl Documentation	    DBIx::Class::Schema::Loader::DBI::Writing(3pm)

NAME

       DBIx::Class::Schema::Loader::DBI::Writing - Loader subclass writing guide for DBI

SYNOPSIS

	 package DBIx::Class::Schema::Loader::DBI::Foo;

	 # THIS IS JUST A TEMPLATE TO GET YOU STARTED.

	 use strict;
	 use warnings;
	 use base 'DBIx::Class::Schema::Loader::DBI';
	 use mro 'c3';

	 sub _table_uniq_info {
	     my ($self, $table) = @_;

	     # ... get UNIQUE info for $table somehow
	     # and return a data structure that looks like this:

	     return [
		[ 'keyname' => [ 'colname' ] ],
		[ 'keyname2' => [ 'col1name', 'col2name' ] ],
		[ 'keyname3' => [ 'colname' ] ],
	     ];

	     # Where the "keyname"'s are just unique identifiers, such as the
	     # name of the unique constraint, or the names of the columns involved
	     # concatenated if you wish.
	 }

	 sub _table_comment {
	     my ( $self, $table ) = @_;
	     return 'Comment';
	 }

	 sub _column_comment {
	     my ( $self, $table, $column_number ) = @_;
	     return 'Col. comment';
	 }

	 1;

DETAILS

       The only required method for new subclasses is "_table_uniq_info", as there is not (yet) any standardized, DBD-agnostic way for obtaining
       this information from DBI.

       The base DBI Loader contains generic methods that *should* work for everything else in theory, although in practice some DBDs need to
       override one or more of the other methods.  The other methods one might likely want to override are: "_table_pk_info", "_table_fk_info",
       "_tables_list" and "_extra_column_info".  See the included DBD drivers for examples of these.

       To import comments from the database you need to implement "_table_comment", "_column_comment"

AUTHOR

       See "AUTHOR" in DBIx::Class::Schema::Loader and "CONTRIBUTORS" in DBIx::Class::Schema::Loader.

LICENSE

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-06-08			    DBIx::Class::Schema::Loader::DBI::Writing(3pm)

Linux and UNIX Man Pages

dbix::class::schema::loader::relbuilder(3pm) [debian man page]

Check Out this Related Man Page