NAME

Data::Model - model interface which had more data sources unified, a.k.a data/object mapper

SYNOPSIS

  package Your::Model;
  use base 'Data::Model';
  use Data::Model::Schema;
  use Data::Model::Driver::DBI;
  
  my $dbfile = '/foo/bar.db';
  my $driver = Data::Model::Driver::DBI->new(
      dsn => "dbi:SQLite:dbname=$dbfile",
  );
  base_driver( $driver );
  
  install_model user => schema {
      key 'id';
      columns qw/
          id
          name
      /;
  };
  
  # create database file
  unless (-f $dbfile) {
      my $dbh = DBI->connect($dsn, '', '', { RaiseError => 1, PrintError => 0 });
      for my $sql (__PACKAGE__->as_sqls) {
          $dbh->do( $sql );
      }
      $dbh->disconnect;
  }
  
  # in your script:
  use Your::Model;
  
  my $model = Your::Model->new;
  
  # insert
  my $row = $model->set(
      user => {
          id => 1,
      }
  );
  
  my $row = $model->lookup( user => 1 );
  $row->delete;

DESCRIPTION

Data::Model is can use as ORM which can be defined briefly.

There are few documents. It is due to be increased in the near future.

SCHEMA DEFINITION

One package can define two or more tables using DSL.

see Data::Model::Schema.

METHODS

new([ \%options ]);

  my $model = Class->new;

lookup($target => $key)

  my $row = $model->lookup( user => $id );
  print $row->name;

lookup_multi($target => \@keylist)

  my @row = $model->lookup_multi( user => [ $id1, $id2 ] );
  print $row[0]->name;
  print $row[1]->name;

get($target => $key [, \%options ])

  my $iterator = $model->get( user => { 
      id => {
          IN => [ $id1, $id2 ],
      }
  });
  while (my $row = $iterator->next) {
      print $row->name;
  }
  # or
  while (my $row = <$iterator>) {
      print $row->name;
  }
  # or
  while (<$iterator>) {
      print $_->name;
  }

set($target => $key, => \%values [, \%options ])

  $model->set( user => {
    id   => 3,
    name => 'insert record',
  });

if insert to table has auto increment then return $row object with fill in key column by last_insert_id.

  my $row = $model->set( user => {
    name => 'insert record',
  });
  say $row->id; # show last_insert_id()

delete($target => $key [, \%options ])

  $model->delete( user => 3 ); # id = 3 is deleted

ROW OBJECT METHODS

row object is provided by Data::Model::Row.

update

  my $row = $model->lookup( user => $id );
  $row->name('update record');
  $row->update;

delete

  my $row = $model->lookup( user => $id );
  $row->delete;

TRANSACTION

see Data::Model::Transaction.

DATA DRIVERS

DBI

see Data::Model::Driver::DBI.

DBI::MasterSlave

master-slave composition for mysql.

see Data::Model::Driver::DBI::MasterSlave.

Cache

Cash of the result of a query.

see Data::Model::Driver::Cache::HASH, see Data::Model::Driver::Cache::Memcached.

Memcached

memcached is used for data storage.

see Data::Model::Driver::Memcached.

Queue::Q4M

queuing manager for Q4M.

see Data::Model::Driver::Queue::Q4M.

Memory

on memory storage.

see Data::Model::Driver::Memory.

ACKNOWLEDGEMENTS

Benjamin Trott more idea given by Data::ObjectDriver

AUTHOR

Kazuhiro Osawa <yappo <at> shibuya <doet> pl>

REPOSITORY

  git clone git://github.com/yappo/p5-Data-Model.git

Data::Model's Git repository is hosted at <http://github.com/yappo/p5-Data-Model>. patches and collaborators are welcome.

LICENSE

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

POD ERRORS

Hey! The above document had some coding errors, which are explained below:

Around line 754:: Non-ASCII character seen before =encoding in '<doet>'. Assuming UTF-8