/**
* Add order to criteria, creating necessary subCriteria if nested sort property (ie.
* sort:'nested.property').
*/
private static void addOrderPossiblyNested(
AbstractHibernateDatastore datastore,
Criteria c,
Class<?> targetClass,
String sort,
String order,
boolean ignoreCase) {
int firstDotPos = sort.indexOf(".");
if (firstDotPos == -1) {
addOrder(c, sort, order, ignoreCase);
} else { // nested property
String sortHead = sort.substring(0, firstDotPos);
String sortTail = sort.substring(firstDotPos + 1);
PersistentProperty property = getGrailsDomainClassProperty(datastore, targetClass, sortHead);
if (property instanceof Embedded) {
// embedded objects cannot reference entities (at time of writing), so no more recursion
// needed
addOrder(c, sort, order, ignoreCase);
} else if (property instanceof Association) {
Criteria subCriteria = c.createCriteria(sortHead);
Class<?> propertyTargetClass =
((Association) property).getAssociatedEntity().getJavaClass();
GrailsHibernateUtil.cacheCriteriaByMapping(datastore, propertyTargetClass, subCriteria);
addOrderPossiblyNested(
datastore,
subCriteria,
propertyTargetClass,
sortTail,
order,
ignoreCase); // Recurse on nested sort
}
}
}
