// Method:
// Get the IDs of direct upwards related nodes
public String getThreadIDs(String relation) {
// Test if we reach ROOT parent
if (null == parent_) {
return relation;
} else {
return parent_.getThreadIDs(postId_ + "#" + sender_ + "#" + subject_ + ":" + relation);
}
}
// Method:
public void incrementReplyCount() {
replies_++;
// Also increment all parents and test
// for when to stop at root node whose parent is null
if (null != parent_) {
parent_.incrementReplyCount();
}
}