dbix::class::helper::row::storagevalues(3pm) [debian man page]

DBIx::Class::Helper::Row::StorageValues(3pm)		User Contributed Perl Documentation	      DBIx::Class::Helper::Row::StorageValues(3pm)

NAME

       DBIx::Class::Helper::Row::StorageValues - Keep track of stored vs in-memory row values

VERSION

       version 2.013002

SYNOPSIS

	package MyApp::Schema::Result::BlogPost;

	use parent 'DBIx::Class::Core';

	__PACKAGE__->load_components(qw(Helper::Row::StorageValues));

	__PACKAGE__->table('BlogPost');
	__PACKAGE__->add_columns(
	   id => {
	      data_type 	=> 'integer',
	      is_auto_increment => 1,
	   },
	   title => {
	      data_type 	 => 'varchar',
	      length		 => 32,
	      keep_storage_value => 1,
	   },
	   body => {
	      data_type => 'text',
	   },
	);

	1;

	# elsewhere:

	my $post = $blog_rs->create({
	  title => 'Components for fun and profit',
	  body	=> '...',
	});

	$post->title('Components for fun');

	warn sprintf 'Changing title from %s to %s',
	  $post->storage_value('title'), $post->title;

	$post->update;

DESCRIPTION

       This component keeps track of the value for a given column in the database.  If you change the column's value and do not call "update", the
       "storage_value" will be different; once "update" is called the "storage_value" will be set to the value of the accessor.  Note that the
       fact that it uses the accessor is an important distinction.  If you are using DBIx::Class::FilterColumn or DBIx::Class::InflateColumn it
       will get the non-storage or inflated values, respectively.

METHODS

   _has_storage_value
	$self->_has_storage_value('colname')

       returns true if we should store the storage value from the database.  Override this if you'd like to enable storage on all integers or
       something like that:

	sub _has_storage_value {
	   my ( $self, $column ) = @_;

	   my $info = $self->column_info($column);

	   return defined $info->{data_type} && $info->{data_type} eq 'integer';
	}

   storage_value_columns
	$self->storage_value_columns

       returns a list of columns to store

   get_storage_value
	$self->get_storage_value('colname')

       returns the value for that column which is in storage

AUTHOR

       Arthur Axel "fREW" Schmidt <frioux+cpan@gmail.com>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2012 by Arthur Axel "fREW" Schmidt.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.14.2							    2012-06-18			      DBIx::Class::Helper::Row::StorageValues(3pm)

Check Out this Related Man Page

DBIx::Class::KiokuDB(3pm)				User Contributed Perl Documentation				 DBIx::Class::KiokuDB(3pm)

NAME

       DBIx::Class::KiokuDB - Refer to KiokuDB objects from DBIx::Class tables.

SYNOPSIS

       See DBIx::Class::Schema::KiokuDB.

	   package MyApp::DB::Result::Album;
	   use base qw(DBIx::Class);

	   __PACKAGE__>load_components(qw(Core KiokuDB));

	   __PACKAGE__->table('album');

	   __PACKAGE__->add_columns(
	       id => { data_type => "integer" },
	       title => { data_type => "varchar" },

	       # the foreign key for the KiokuDB object:
	       metadata => { data_type => "varchar" },
	   );

	   __PACKAGE__->set_primary_key('id');

	   # enable a KiokuDB rel on the column:
	   __PACKAGE__->kiokudb_column('metadata');

DESCRIPTION

       This DBIx::Class component provides the code necessary for DBIx::Class::Row objects to refer to KiokuDB objects stored in
       KiokuDB::Backend::DBI.

CLASS METHODS

       kiokudb_column $rel
	   Declares a relationship to any KiokuDB object.

	   In future versions adding relationships to different sub-collections will be possible as well.

METHODS

       store
	   A convenience method that calls "store" in KiokuDB on all referenced KiokuDB objects, and then invokes "insert_or_update" on $self.

       get_kiokudb_column $col
       set_kiokudb_column $col, $obj
       store_kiokudb_column $col, $obj
	   See DBIx::Class::Row.

OVERRIDDEN METHODS

       new Recognizes objects passed in as column values, much like standard relationships do.

       insert
	   Also calls "insert" in KiokuDB on all referenced objects that are not in the KiokuDB storage.

       update
	   Adds a check to ensure that all referenced KiokuDB objects are in storage.

perl v5.12.4							    2011-10-04						 DBIx::Class::KiokuDB(3pm)

Linux and UNIX Man Pages

dbix::class::helper::row::storagevalues(3pm) [debian man page]

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