Data::Model::Driver::Cache::HASH - Penetration cache is offered to the basic driver

Data-Model documentation Contained in the Data-Model distribution.

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NAME

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Data::Model::Driver::Cache::HASH - Penetration cache is offered to the basic driver

SYNOPSIS

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  package MyDB;
  use base 'Data::Model';
  use Data::Model::Schema;
  use Data::Model::Driver::DBI;
  use Data::Model::Driver::Cache::HASH;

  my $dbi_connect_options = {};
  my $fallback_driver = Data::Model::Driver::DBI->new(
      dsn             => 'dbi:mysql:host=localhost:database=test',
      username        => 'user',
      password        => 'password',
      connect_options => $dbi_connect_options,
  );

  my $driver = Data::Model::Driver::Cache::HASH->new(
      fallback => $fallback_driver,
  );

  base_driver $driver;
  install_model model_name => schema {
    ....
  };

DESCRIPTION

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Penetration cache is offered to the basic driver. Cash is stored in the standard hash for Perl.

When cash does not hit, it asks fallback driver.

SEE ALSO

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Data::Model

AUTHOR

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

LICENSE

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

Data-Model documentation Contained in the Data-Model distribution. 
package Data::Model::Driver::Cache::HASH;
use strict;
use warnings;
use base 'Data::Model::Driver::Cache';

my %CACHE;

sub add_to_cache {
    my($self, $key, $data) = @_;

    my $ret = $CACHE{$key} = $data;
    return if !defined $ret;
    return $ret;
}

sub get_from_cache {
    my($self, $key) = @_;

    my $ret = $CACHE{$key};
    return if !defined $ret;
    return $ret;
}

sub remove_from_cache {
    my($self, $key) = @_;
    
    my $ret = delete $CACHE{$key};
    return if !defined $ret;
    return $ret;
}

1;