tail-cvs

[Márcio V. d. S. <mv...@us...>]

Update of /cvsroot/tail/Tail/src/java/net/sf/tail/strategy
In directory sc8-pr-cvs10.sourceforge.net:/tmp/cvs-serv20090/src/java/net/sf/tail/strategy

Added Files:
	MinValueStopperStrategy.java JustBuyOnceStrategy.java 
Removed Files:
	StopDecoratorStrategy.java 
Log Message:
Criado teste para o HistoryRunner
Criado JustBuyOnceStrategy
Criado MinvalueStopperStrategy

--- StopDecoratorStrategy.java DELETED ---

--- NEW FILE: JustBuyOnceStrategy.java ---
package net.sf.tail.strategy;

import net.sf.tail.Operation;
import net.sf.tail.OperationType;
import net.sf.tail.Strategy;

public class JustBuyOnceStrategy implements Strategy {

	private boolean buyed;
	private int buyedIndex;

	public JustBuyOnceStrategy() {
		buyed = false;
	}
	
	public Operation shouldEnter(int index) {
		if(!buyed || buyedIndex == index ){
			buyed = true;
			buyedIndex = index;
			return new Operation(index, OperationType.BUY);
		}
		return null;
	}

	public Operation shouldExit(Operation entry, int index) {
		return null;
	}
}

--- NEW FILE: MinValueStopperStrategy.java ---
package net.sf.tail.strategy;

import net.sf.tail.Indicator;
import net.sf.tail.Operation;
import net.sf.tail.OperationType;
import net.sf.tail.Strategy;

/**
 * MinValueStopperStrategy baseia a compra em uma {@link Strategy} enviada como parâmetro,
 * registrando o valor do {@link Indicator} enviado como parâmetro no mesmo índice de compra,  
 * e baseia a venda nessa mesma {@link Strategy} desde que o valor registrado do {@link Indicator} 
 * na compra não tenha um decréscimo maior que loss %
 *
 */
public class MinValueStopperStrategy implements Strategy {

	private Strategy strategy;

	private double loss;

	private Indicator<? extends Number> indicator;

	private double value;

	public MinValueStopperStrategy(Indicator<? extends Number> indicator, Strategy strategy, int loss) {
		this.strategy = strategy;
		this.loss = (double) loss;
		this.indicator = indicator;
	}

	public Operation shouldEnter(int index) {
		if (strategy.shouldEnter(index) == null) {
			return null;
		}
		value = indicator.getValue(index).doubleValue();
		return strategy.shouldEnter(index);

	}

	public Operation shouldExit(Operation entry, int index) {
		if (value - (value * (loss / 100)) > indicator.getValue(index).doubleValue()) {
			return new Operation(index, OperationType.SELL);
		}
		return strategy.shouldExit(entry, index);
	}

	public double getLoss() {
		return loss;
	}

	public Strategy getStrategy() {
		return strategy;
	}

}