Compare Enums in SpEL

Question

At Spring's @Cacheable annotation I want to specify an unless condition.

However my return value is neither a primitive type nor a Java bean, but an Enum.

How can I compare for equality with another Enum in SpEL (Spring Expression Language)?

Can you be more specific? What are the two operands? What are you comparing? — Sotirios Delimanolis, Feb 16 '14 at 02:46
@SotiriosDelimanolis An instance of the Enum and a value of the enum. Like `instance == Enum.CERTAIN_VALUE`. — Harold L. Brown, Feb 16 '14 at 08:51

score 81 · Accepted Answer · edited Jun 07 '22 at 04:45

81

#result == T(fully.qualified.path.to.AnEnum).A_VALUE

Reference here:

You can use the special T operator to specify an instance of java.lang.Class (the type).

edited Jun 07 '22 at 04:45

jumping_monkey

answered Feb 16 '14 at 09:21

Harold L. Brown

sorrymissjackson · Answer 2 · 2016-03-10T16:57:33.623

28

#object.someEnumProperty.name() == 'CERTAIN_VALUE'

would work as well.

edited Mar 10 '16 at 16:57

answered Nov 25 '15 at 16:07

sorrymissjackson

You are right @michaldo. I changed my answer to something that actually works. Wrote this from the top of my head. Sorry for the first bad attempt. – sorrymissjackson Mar 10 '16 at 16:55
Now is OK. I cancelled my comment – michaldo Mar 10 '16 at 20:50
This can be lot shorter than the accepted answer, because you do not need to write the whole fully qualified path. – Wouter Aug 11 '16 at 13:39
2

But you'd have to ensure it always matches the enum variable in case it changes – aksh1618 Apr 10 '20 at 16:31

2 Answers2