@Override
@Transactional
public <T> Records<T> getRelatedFieldValue(
Long entityId, Long instanceId, String fieldName, QueryParams queryParams) {
EntityDto entity = getEntity(entityId);
validateCredentials(entity);
String entityName = entity.getName();
MotechDataService service = getServiceForEntity(entity);
Object instance = service.findById(instanceId);
if (instance == null) {
throw new ObjectNotFoundException(entityName, instanceId);
}
try {
Collection<T> relatedAsColl =
TypeHelper.asCollection(PropertyUtil.getProperty(instance, fieldName));
List<T> filtered = InMemoryQueryFilter.filter(relatedAsColl, queryParams);
int recordCount = relatedAsColl.size();
int rowCount = (int) Math.ceil(recordCount / (double) queryParams.getPageSize());
return new Records<>(queryParams.getPage(), rowCount, recordCount, filtered);
} catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
throw new ObjectReadException(entityName, e);
}
}
