xlc.quant.data.indicator.calculator.TD Maven / Gradle / Ivy
package xlc.quant.data.indicator.calculator;
import java.util.function.Function;
import lombok.Data;
import lombok.EqualsAndHashCode;
import xlc.quant.data.indicator.Indicator;
import xlc.quant.data.indicator.IndicatorCalculator;
import xlc.quant.data.indicator.IndicatorComputeCarrier;
/**
* 源自于TD序列, 神奇九转，九转序列,是因TD序列的9天收盘价研判标准而得名。
* @author Rootfive
*
*
* https://zhuanlan.zhihu.com/p/354262959
* 好文：https://www.cnblogs.com/proxukun/p/4988771.html
*
*/
@Data
@EqualsAndHashCode(callSuper = true)
public class TD extends Indicator {
//=============
//内部类分隔符 XXX
//=============
/**
* 构建-计算器-====== XXX
* @param capacity
* @return
*/
public static > IndicatorCalculator buildCalculator(int capacity, int moveSize) {
return new TDCalculator<>(capacity, moveSize);
}
/**
* 计算器
* @author Rootfive
*/
private static class TDCalculator> extends IndicatorCalculator {
private final int moveSize;
/**
* @param capacity
* @param isFullCapacityCalculate
*/
public TDCalculator(int capacity, int moveSize) {
super(capacity, false);
this.moveSize = moveSize;
}
@Override
protected Integer executeCalculate(Function propertyGetter) {
if (executeTotal < (1 + moveSize)) {
return null;
}
// 第一根
CARRIER head = getHead();
CARRIER compareMove = getPrevByNum(moveSize);
CARRIER prev = getPrev();
double currentClose = head.getClose();
double compareMoveClose = compareMove.getClose();
return getCurrentTD(currentClose, compareMoveClose, propertyGetter.apply(prev));
}
private static int getCurrentTD(Double current, Double prev, Integer preTD) {
if (current == null || prev == null || preTD == null) {
return 0;
}
int compareResult = current.compareTo(prev);
if (compareResult > 0) {
if (preTD > 0) {
return preTD + 1;
} else {
return 1;
}
} else if (compareResult < 0) {
if (preTD >= 0) {
return -1;
} else {
return preTD - 1;
}
}
return 0;
}
}
}