创建单独的谓词

据我所知,你基本上有:

public abstract static class MyDate {
    public abstract boolean isBefore(MyDate other);
    public abstract boolean isAfter(MyDate other);
    public abstract boolean isEqual(MyDate other);
}
public static abstract class Time {
    public abstract Optional<MyDate> getValidTo();
    public abstract Optional<MyDate> getValidFrom();
}

public static abstract class Person extends Time {
}

(好吧,我暂时不谈实现)。

如果创建以下类:

public static class TimePersonPredicate implements Predicate<Time> {

    private final Person person;
    public TimePersonPredicate(Person person) {
        this.person = person;
    }
    @Override
    public boolean test(Time time) {
        return (!person.getValidTo().isPresent() || time.getValidFrom().get().isBefore(person.getValidTo().get()) || time.getValidFrom().get().isEqual(person.getValidTo().get()))
                && (!time.getValidTo().isPresent() || time.getValidTo().get().isAfter(person.getValidFrom().get()) || time.getValidTo().get().isEqual(person.getValidFrom().get()));
    }

}

public static void main(String[] args) {
    List<Person> people = new ArrayList<>();
    List<Time> peopleTime = new ArrayList<>();
    people.stream()
        .filter(person -> peopleTime.stream().anyMatch(new TimePersonPredicate(person) ))...
}

这就是你想要的吗?