public List run(Integer guideYear) throws Exception {
List guides = Guide.readByYear(guideYear);
if (guides.isEmpty()) {
throw new NonExistingServiceException();
}
BeanComparator numberComparator = new BeanComparator("number");
BeanComparator versionComparator = new BeanComparator("version");
ComparatorChain chainComparator = new ComparatorChain();
chainComparator.addComparator(numberComparator);
chainComparator.addComparator(versionComparator);
Collections.sort(guides, chainComparator);
// CollectionUtils.filter(guides,)
List result = getLatestVersions(guides);
return result;
}
