Test only if variable is not null in if statement

Question

I have the following method where I want to test the event status property only if status has been passed in    def findEvent String desc  String status   null  Collection events            return events find               it description    desc  amp  amp    If status is not null  it status    status                    throw new Exception  Review Event Record Not Found    desc        I thought it could be done like this  but it doesn t seem to work   def findEvent String desc  String status   null  Collection events            return events find               it description    desc  amp  amp   status    null     it status    status                      throw new Exception  Review Event Record Not Found    desc        Is there any way this could be done  Or do I have to go back to something like this   if  status    null        return events find           it description    desc  amp  amp  it status    status         else if  status    null        return events find           it description    desc           Is there some kind of best practice

User · Accepted Answer

I don t believe the expression is sensical as it is   Elvis means  if truthy  use the value  else use this other thing     Your  other thing  is a closure  and the value is status    null  neither of which would seem to be what you want  If status is null  Elvis says true  If it s not  you get an extra layer of closure   Why can t you just use    it description    desc   amp  amp    status    null      it status    status     Even if that didn t work  all you need is the closure to return the appropriate value  right  There s no need to create two separate find calls  just use an intermediate variable

[groovy] Test only if variable is not null in if statement

Examples related to groovy

Examples related to if-statement