public Source findRoot(String prefix, Source source) {
Source parent = findParent(prefix, source);
int parents = new StringTokenizer(prefix, ".").countTokens();
for (int i = 0; i < parents; i++) {
parent = parent.getParent();
}
return parent;
}
public boolean hasPrefix(String prefix, Source source) {
List packages = CollectionUtil.toList(new StringTokenizer(prefix, "."));
Collections.reverse(packages);
for (int i = 0; i < packages.size(); i++) {
String aPackage = (String) packages.get(i);
if (!aPackage.equals(source.getName())) {
return false;
}
source = source.getParent();
}
return true;
}
public Source findParent(String prefix, Source source) {
while (source != null && !hasPrefix(prefix, source)) {
source = source.getParent();
}
return source;
}