/**
* @author Bogdan Sliptsov
* <p>This method is used to find all groups in DB by group-name or group-id.
* @param searchValue String search value which can be group-name or group-id
* @return Null 1. If searchValue reference is null; 2. If searchValue is empty; 3. If there are
* no groups with such name or id.
* @exception NumberFormatException On parsing searchValue to Long (searching by group id)
*/
public List<Group> getAllGroupsByNameOrID(String searchValue) {
if (StringUtils.isEmpty(searchValue)) return null;
List<Group> allGroups = getAllGroups();
List<Group> resultList = new ArrayList<>();
for (Group g : allGroups) {
if (g.getName().equals(searchValue)) {
resultList.add(g);
continue;
}
try {
Long id = Long.parseLong(searchValue);
if (g.getId().equals(id)) {
resultList.add(g);
}
} catch (NumberFormatException ex) {
/*NOP*/
}
}
if (resultList.isEmpty()) return null;
return resultList;
}
/**
* @author Bogdan Sliptsov
* <p>This method is used to update group in DB.
* @param group Group object to update.
* @return 1. Null If group doesn't exist. 2. Group object of updated group.
*/
public Group updateGroup(Group group) {
if (group == null) return null;
if (groupDao.read(group.getId()) == null) return null;
return groupDao.update(group);
}