/**
* Get the content of the requires attribute as a set of strings.
*
* @param model the model to query for required policy
* @return set of policy requirements; empty set if nothing found
*/
public static Set<String> getRequires(Model model) {
Set<String> requiredSet = new HashSet<String>();
String requires = model.getModelConfiguration().getAttribute(REQUIRES);
if (requires != null) {
for (String policy : requires.split(" ")) {
requiredSet.add(policy);
}
}
return requiredSet;
}
/**
* Set the content of the requires attribute for a given config model.
*
* @param model the model to set policy requirements on.
* @param requiredSet the set of policy requirements.
*/
public static void setRequires(Model model, Set<String> requiredSet) {
if (requiredSet == null || requiredSet.isEmpty()) {
return;
}
Iterator<String> it = requiredSet.iterator();
String requires = it.next();
while (it.hasNext()) {
requires += " " + it.next();
}
model.getModelConfiguration().setAttribute(REQUIRES, requires);
}