I was working with a strategy that I was unable to compile. I have identified the issue I am having and have prepared a simple example to demonstrate the problem. It seems as though I am not able to access bar history from a custom function. Please keep in mind that this example is a demonstration only and that my intended use requires access of bar history from a custom function.

package jforex;

import java.util.*;

import com.dukascopy.api.*;

public class Test implements IStrategy {
    private IEngine engine;
    private IConsole console;
    private IHistory history;
    private IContext context;
    private IIndicators indicators;
    private IUserInterface userInterface;
    
    public void onStart(IContext context) throws JFException {
        this.engine = context.getEngine();
        this.console = context.getConsole();
        this.history = context.getHistory();
        this.context = context;
        this.indicators = context.getIndicators();
        this.userInterface = context.getUserInterface();
    }

    public void onAccount(IAccount account) throws JFException {
    }

    public void onMessage(IMessage message) throws JFException {
    }

    public void onStop() throws JFException {
    }

    public void onTick(Instrument instrument, ITick tick) throws JFException {
    }
    
    public void onBar(Instrument instrument, Period period, IBar askBar, IBar bidBar) throws JFException {
        if (period.equals(Period.DAILY)) {
            console.getOut().println(testHistory(instrument, period));
        }
    }
    
    private double testHistory(Instrument instrument, Period period) {
        IBar historyBar;
        historyBar = history.getBar(instrument, period, OfferSide.ASK, 1);
        return historyBar.getClose();
    }
}

The above code will not compile. Produces the following error:


Any help at resolving this issue would be most appreciated.

Best regards,

Brad

I have corrected this problem by adjusting line 42 to:

private double testHistory(Instrument instrument, Period period) throws JFException {