public String descendants(RequirementGraph<Project> graph) {
if (next != null && next.contains(requirement)) return "!";
if (requirement == null) return "";
Project prerequisite = getPrerequsiteEvenIfExpired();
if (prerequisite == null) return "";
Collection<Requirement<Project>> requirements = finder.getRequirements(prerequisite, graph);
return " "
+ requirement.rightArrow(now)
+ " "
+ prerequisite
+ new DescendantAncestry(now, first(requirements), finder, this).descendants(graph);
}
private Project getPrerequisite(Requirement<Project> requirement2) {
if (requirement2 == null) return null;
return requirement2.getPrerequisite(now);
}
private boolean contains(Requirement<Project> contained) {
if (requirement.equals(contained)) return true;
if (next == null) return false;
return next.contains(contained);
}
private Project getPrerequsiteEvenIfExpired() {
return requirement.getPrerequisiteEvenIfExpired(now);
}