如何用Timefold的getJustification()替代已弃用的getJustificationList()

原来的getJustificationList()会返回一个混合类型的Object列表，需要遍历列表并通过类型判断来提取Employee、睡眠日期列表和周索引这些数据。而新的getJustification()方法会返回一个封装了所有所需信息的专用对象（具体类名需参考你使用的API文档或源码），直接通过对象的getter方法就能获取对应数据，无需再做遍历和类型判断。

修改后的代码示例 #

Employee employee = null;
int weekIndex = -1;
List<SleepTimeWithDate> listOfSleepTimeWithDate = null;

// 获取封装后的 justification 对象
Object justificationObj = constraintMatch.getJustification();
// 替换为实际API中getJustification()返回的具体类型，比如ConstraintJustification
if (justificationObj instanceof ConstraintJustification) {
    ConstraintJustification justification = (ConstraintJustification) justificationObj;
    employee = justification.getEmployee();
    weekIndex = justification.getWeekIndex();
    listOfSleepTimeWithDate = justification.getSleepTimeWithDateList();
}

简化写法（若返回类型明确） #

如果getJustification()直接返回具体类型而非Object，可省去类型判断和强转：

ConstraintJustification justification = constraintMatch.getJustification();
Employee employee = justification.getEmployee();
int weekIndex = justification.getWeekIndex();
List<SleepTimeWithDate> listOfSleepTimeWithDate = justification.getSleepTimeWithDateList();

注意事项 #

• 请将示例中的ConstraintJustification替换为实际API定义的类名，同时确认该类提供的getter方法名称（比如getSleepTimeWithDateList()可能实际叫getSleepTimes()等，以API为准）。

内容的提问来源于stack exchange，提问作者Mischa Stone