NAME

KiokuDB::Role::ID::Content - Content dependent object IDs

SYNOPSIS

package BLOB;
use Moose;

use Digest::SHA1;

with qw(KiokuDB::Role::ID::Content);

sub kiokudb_object_id {
    my $self = shift;
    sha1_hex($self->data);
}

has data => (
    isa => "Str",
    is  => "ro",
    required => 1,
);

DESCRIPTION

This is a role for KiokuDB::Role::Immutable objects whose IDs depend on their content, or in other words content addressible objects.

A canonical example is a string identified by its SHA-1 hash, as is demonstrated in the "SYNOPSIS".

Objects which do this role are never updated in the database just like KiokuDB::Role::Immutable objects.

Additionally, it is not an error to insert such objects twice since the objects are assumed to be identical.