/**
* Creates an array of JPA predicates for networks list query. Add filter predicates for name and
* principal if required. 1) if name is specified adds 'name = ?' predicate 2) if name pattern is
* specified adds 'name like ?' predicate 3) if principal is user of key without ADMIN role adds
* predicate for filtering not assigned networks 4) if principal is key which has permissions only
* to specific networks adds 'network.id in (allowed_networks)' predicates
*
* @return array of above predicates
* @see {@link com.devicehive.service.NetworkService#list(String, String, String, boolean,
* Integer, Integer, HivePrincipal)}
*/
public static Predicate[] networkListPredicates(
CriteriaBuilder cb,
Root<Network> from,
Optional<String> nameOpt,
Optional<String> namePatternOpt,
Optional<HivePrincipal> principalOpt) {
List<Predicate> predicates = new LinkedList<>();
nameOpt.ifPresent(name -> predicates.add(cb.equal(from.get("name"), name)));
namePatternOpt.ifPresent(pattern -> predicates.add(cb.like(from.get("name"), pattern)));
principalOpt
.flatMap(
principal -> {
User user = principal.getUser();
if (user == null && principal.getKey() != null) {
user = principal.getKey().getUser();
}
return ofNullable(user);
})
.ifPresent(
user -> {
if (!user.isAdmin()) {
predicates.add(from.join("users").in(user));
}
});
principalOpt
.map(HivePrincipal::getKey)
.ifPresent(
key ->
predicates.add(
cb.or(networkPermissionsPredicates(cb, from, key.getPermissions()))));
return predicates.toArray(new Predicate[predicates.size()]);
}
