I have a custom field on Case object named "Random_Field__c". Now my requirement is that whenever the case owner is changed from one queue to another queue, I want to store this new queue value in this custom field. The value should be captured in this field only when the case owner changes from a queue to another queue and not from any user to any queue or any queue to any user.

I successfully achieved this requirement using the PB in which i put the entry criteria as follows and updating the field subsequently oncew the criteria is met and it is working fine :-

    BEGINS(PRIORVALUE([Case].OwnerId) , "00G"),
    BEGINS([Case].OwnerId , "00G")

I want to know how to achieve the same with the help of Apex Trigger. How to fetch the prior value of the case owner as queue or not in Apex and check for the latest value and every other thing.

Please help me out!!! I really wanna know out of my curiosity.

Thanks in Advance, Ali


Here is code example you can insert in your before update trigger.

I have matched each code row to your formula to clarify it.

for (Case case : Trigger.new) {
    Case oldCase = Trigger.oldMap.get(case.Id);
    if (oldCase.OwnerId != case.OwnerId //ISCHANGED([Case].OwnerId)
            && case.OwnerId != null //NOT(ISNULL([Case].OwnerId))
            && oldCase.OwnerId.getSobjectType().getDescribe().getKeyPrefix() == '00G' //BEGINS(PRIORVALUE([Case].OwnerId) , "00G")
            && case.OwnerId.getSobjectType().getDescribe().getKeyPrefix() == '00G' //BEGINS([Case].OwnerId , "00G")
            ) {
        //do something

Here is documentation from SF:

  • Thanks a lot Mariia... this was really helpful... If you don't mind can you please share wd me the document that would contain the methods that you have used, from where I can refer to these methods like getSobjectType(), getDescribe() and getKeyPrefix(). Thank you again!!!
    – SFDC Alex
    Jul 28 '20 at 10:43
  • @SFDCAlex Have updated the answer with relevant links to documentation. Jul 28 '20 at 10:58
  • got it...thanks a lot!!! appreciate all your help on this...
    – SFDC Alex
    Jul 28 '20 at 11:50

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