Interface ydn.db.ICursor

Cursors are a transient mechanism used to iterate on stream of ordered records from a store. cursor

Cursors are obtained by opening an iterator. Opening a key iterator enumerate key cursors while opening a value iterator enumerate value cursors. Key cursor is read only and does not have value. Enumerating key cursor is much faster than value cursor and commonly used in filter and join query.

var iter = new ydn.db.ValueIterator('player');
db.open(iter, function next(icursor) {
  var v = icursor.value();
  if (v.amount < 50) {
     v.amount += 10;
     icursor.update(v);
  }
});