Hi Benedikt, Yes, ObjectUtils.isEmpty(null) would return true. You can review the pull request (https://github.com/apache/commons-lang/pull/342) if you'd like to see the entire implementation in its current state.
Thanks and best regards, Alexander 2018-08-17 15:41 GMT+03:00 Benedikt Ritter <brit...@apache.org>: > Hello Alexander, > > welcome to the mailing list and thanks for your contribution. > > Am Fr., 17. Aug. 2018 um 10:43 Uhr schrieb Alexander Tsvetkov < > alexander.tsvetkov...@gmail.com>: > > > Hi all, > > > > First of all, apologies if I have messed something up - this is my first > > attempt at contributing to Apache. > > > > With that said, I'd like to propose adding two new methods to Commons > > Lang's ObjectUtils class: > > - isEmpty() > > - isNotEmpty() > > > > These would check whether the object is empty (or not empty respectively) > > based on its type: > > - CharSequence - Considered empty if its length is zero. > > - Array - Considered empty if its length is zero. > > - Collection - Considered empty if it has zero elements. > > - Map - Considered empty if it has zero key-value mappings. > > The object would be considered "not-empty" if its type is not one of the > > types mentioned above. > > > > There is an already existing method that does exactly this in Spring's > > ObjectUtils (see > > > > https://github.com/spring-projects/spring-framework/blob/ > 2ac23badee02697c5eb87c46f955387b32a0d581/spring-core/src/ > main/java/org/springframework/util/ObjectUtils.java#L134 > > ), > > but I think it would be helpful to people (myself and my team included) > if > > there was a similar method in Commons Lang's ObjectUtils. That way we > > wouldn't have to add a dependency to Spring or re-implement the method in > > our code base. > > > > What do you think? > > > > sounds reasonable. How would you handle null inputs? For example > StringUtils.isEmpty(null) == true, so I would expect the same behavior from > ObjectUtils.isEmpty > > Regards, > Benedikt > > > > > > I've opened a JIRA ticket and a GitHub pull request as well: > > https://issues.apache.org/jira/browse/LANG-1411 > > https://github.com/apache/commons-lang/pull/342 > > > > Best regards, > > Alexander > > >
