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I have a requirement where I need to check if Revision_Number__c number field is blank. If its blank than assign 1 else increment by 1. Following is what I tried.
if(quoteLink.Revision_Number__c.isBlank)
{
quoteLink.Revision_Number__c=1;
}
else
{
clonedQuteLink.Revision_Number__c+=1;
}
It works if the Revision_Number__c already has some values. If its blank then an error about derefencing null values appears. Please guide. Thanks
Check for null first and treat the blanks as zeros.
Try this:
if(quoteLink.Revision_Number__c!=null)
{
if(quoteLink.Revision_Number__c > 0)
clonedQuteLink.Revision_Number__c+=1;
}
else
{
quoteLink.Revision_Number__c=1;
}
null <op> var is difficult to read compared to var <op> null, unless your native language is a right-to-left language. Consider revising. We don't write 1 = x to assign 1 to x, we write x = 1. Nor do we say, in English, "if null is Revision_Number__c", but instead say "if Revision_Number__c is null". It keeps the "language" consistent. (2) See my deleted answer on not using if-else to reduce code complexity and providing easier code coverage.
Try something like:
if(quoteLink.Revision_Number__c.isEmpty() == false )
{
clonedQuteLink.Revision_Number__c+=1;
}
else
{
quoteLink.Revision_Number__c=1;
}
If this doesn't work, you may need to add a try-catch block to trap a null-pointer exception whenever Revision_Number__c isEmpty or null.
Revision_Number__can integer field, a formula, a look-up or is it a text field?