Untitled


Prices.prototype.getSymbols = function(cb){
    this.db.query("SELECT symbols.*, exchanges.exchange FROM symbols, exchange WHERE symbols.id_exchange = exchange.id", function(err, rows){
        if (err) return cb(err)
        cb(null, rows)
    })
}


Prices.prototype.parseSymbols = function(symbols, cb){
    ;(process(){
       var symbol = symbols.pop()
       if (!symbol) return cb()
       //....
       return process()
    })();
}


Prices.prototype.end = function(){
    self.db.end(function(){   })
}


Prices.prototype.start = function(){
    var self = this

    this.setLastDate(function(err, date){
        if (err) return self.end()
        self.getSymbols(symbols)
    })

    function symbols(err, symbols){
        if (err) return self.end()
        self.parseSymbols(symbols, self.end)
    }
}