couch-graph.js

var sys    = require('sys');
var couch  = require('couchdb');
var graph  = require('graph/Graph');
var vertex = require('graph/Vertex');
var edge   = require('graph/Edge');
var matrix = require('graph/matrices/adjacency');

var client = couch.createClient(5984, 'localhost');
var viewUrl = '/graphs/_design/graph/_view/vertices';

var Graph = new graph.Graph();
var edges = {};

client.request(viewUrl, function(er, data) {
    if (er !== null) {
        // Error the error for now.
        return false;
    }

    // Let's build the vertices of the graph.
    if (data.rows !== undefined && data.rows.length > 0) {
        for (var i in data.rows) {
            var currentVertex = data.rows[i].key;

            Graph.addVertex(new vertex.Vertex(currentVertex, {}));

            for (var e in data.rows[i].value) {
                if (edges[currentVertex] === undefined) {
                    edges[currentVertex] = [];
                }

                edges[currentVertex].push(data.rows[i].value[e]);
            }
        }
    } 

    for (var e in edges) {
        for (var ei in edges[e]) {
            Graph.addEdge(new edge.Edge(e, edges[e][ei], {}));
        }
    }

    var vertices = Graph.getVertices();
    var adjacencyMatrix = new matrix.Adjacency(vertices);
    sys.puts(sys.inspect(Matrix));
});