On one hand, Multiverse is nothing less than a "NoSQL object-oriented <blah blah> database system", so it might be interesting.
On the other hand, it’s nothing more than an exercise to keep my C programming skills in good shape, so handle with care.
Here’s a sample multiverse session:
# create entity {
name = 'Umberto Eco'
} umberto_eco;
OK, entity created
# create entity {
title = 'Baudolino',
author = umberto_eco
} baudolino;
OK, entity created
# show umberto_eco;
umberto_eco = entity {
name = 'Umberto Eco'
}
# show baudolino;
baudolino = entity {
title = 'Baudolino',
author = ##0
}
# show ##0;
##0 = entity {
name = 'Umberto Eco'
}
# create class person {
name : string
};
OK, class created
# assign person to umberto_eco;
OK, class 'person' assigned to 'umberto_eco'
# create class book {
title : string
};
OK, class created
# assign book to baudolino;
OK, class 'book' assigned to 'baudolino'
# lookup book with { name = 'Brief history of time' };
OK, no matching objects found
# lookup book with { title = 'Baudolino' };
OK, matching objects found: [1]
# lookup book;
OK, matching objects found: [1]
# show ##1;
##1 = entity {
title = 'Baudolino',
author = ##0
}
# destroy entity ##1;
# lookup book;
OK, no matching objects found