graph.dd

来自「DataDraw is an ultra-fast persistent dat」· DD 代码 · 共 18 行

// A simple test of persistent databases with infinite undo/redo

module Graph pr persistent undo_redo

class Root create_only reference_size 8
    Graph currentGraph

class Graph

class Node

class Edge

relationship Root Graph hashed mandatory
relationship Graph Node hashed mandatory
relationship Node:From Edge:Out doubly_linked mandatory
relationship Node:To Edge:In doubly_linked mandatory