Cursors can be easily converted to arrays using .toArray(foo) method:
var cursor = col.find({});
cursor.toArray(function (err, itemsArray) {
/* do something */
});
But is it possible to convert itemsArray in a cursor so I will have all cursor functions?
var newCursor = foo (itemsArray);
typeof newCursor.toArray === "function" // true
Well it is all just JavaScript so why not create your own iterator:
var Iterator = function () {
var items = [];
var index = 0;
return {
"createCursor" : function (listing) {
items = listing;
},
"next" : function () {
if ( this.hasNext() ) {
return items[index++];
} else {
return null;
}
},
"hasNext" : function () {
if ( index < items.length ) {
return true;
} else {
return false;
}
}
}
}();
So then you use it like this with an array:
var cursor = new Iterator();
cursor.createCursor( array );
cursor.next(); // returns just the first element of the array
So just a general way to write an iterator. If you want more functionality then just add the other methods to the prototype.
cursor.pipe(res)