building
floor
office
room

id
description
short_description
date_inserted
date_updated
db_primary_key(only upon initialisation)

{from:'foo',to:'bar'}

var NodeTree = {
        collection:{};//all node objects
        toCreate:{b:[],f:[],o:[],r:[]},//newly created nodes - use ids or the object itself?
        toEdit:{b:[],f:[],o:[],r:[]},//edited attribute of node - use ids or the object itself?
        toDelete:{b:[],f:[],o:[],r:[]},//deleted node from tree - use ids or the object itself?
        create: function(type,node){
            this.toCreate[type].push(node);
        }//function to add created node?
    }

  var NodeEdges = {
        collection:[];
        toCreate:{b:[],f:[],o:[],r:[]},
        toEdit:{b:[],f:[],o:[],r:[]},
        toDelete:{b:[],f:[],o:[],r:[]},
        create: function(type,node){
            this.toCreate[type].push(node);
        }
    }