final void crawlFromRoot(FormationComposite root) {
for (FormationComponent component : root.getFormations()) {
if (component.isLeaf()) {
this.onLeafFound((FormationLeaf) component);
} else {
FormationComposite composite = (FormationComposite) component;
this.onCompositeFound(composite);
this.crawlFromRoot(composite);
}
}
}
public FormationLeaf getLeafById(Long id) {
if (id == null) {
throw new IllegalArgumentException(
"Cannot find a " + FormationLeaf.class + " if given id is null");
}
this.refreshIfNeeded();
FormationComponent component = this.components.get(id);
if (component == null || !component.isLeaf()) {
return null;
}
return (FormationLeaf) component;
}