NAME

CogBase - A CogBase Implementation in Perl

WARNING

This Database implementation is in its infancy. Just barely a proof of concept so far. It would be ridiculous of you to use it for anything serious, yet.

SYNOPSIS

    use CogBase;

    my $conn = CogBase->connect('http://cog.example.com');

    my $schema = $conn->node('Schema');
    $schema->value(<<'...');
    +: person
    <: Node
    age: Number
    given_name: String
    family_name: String
    ...
    $conn->store($schema);

    my $person = $conn->node('person');

    $person->given_name('Ingy');
    $person->family_name('dot Net');
    $person->age(42);

    $conn->store($person);

    my @results = $conn->query('!person');
    my @nodes = $conn->fetch(@results);

    for my $node (@nodes) {
        print "%s %s is %d years old\n",
            $node->given_name,
            $node->family_name,
            $node->age;
    }

    $conn->disconnect;

DESCRIPTION

CogBase is a Object Database Management System.

Some interesting characteristics of its design are:

• All objects are stored as nodes.

• Every node has a universally unique id.

• Every node has a type.

• Every type has a schema.

• Every schema, is itself, a node in the db.

• Every schema has a base/super schema that it inherits from.

• Schemas can be used to generate programming language (Perl) classes for every type (schema) of node.

• CogBase defines several core scalar types.

• CogBase defines one core schema (that every schema inherits from).

• Every node has one or more revisions.

• Every revision is immutable.

• Database access methods are connect, create, store, fetch, query and disconnect.

• All nodes have access control based on the Unix File System.

• HTTP is used for the network layer. GET and POST are used for all operations.

• Database can be used over network or embedded.

• Access control is based on Unix File System

AUTHOR

Ingy döt Net, <ingy at cpan.org>

BUGS

Please report any bugs or feature requests to bug-cogbase at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=CogBase. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc CogBase

You can also look for information at:

• AnnoCPAN: Annotated CPAN documentation

  http://annocpan.org/dist/CogBase

• CPAN Ratings

  http://cpanratings.perl.org/d/CogBase

• RT: CPAN's request tracker

  http://rt.cpan.org/NoAuth/Bugs.html?Dist=CogBase

• Search CPAN

  http://search.cpan.org/dist/CogBase

ACKNOWLEDGEMENTS

Unix, HTTP

COPYRIGHT & LICENSE

Copyright 2006 Ingy döt Net, all rights reserved.

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