Jexl - How to check one list contains other list

Question

For me, the below logic, single value contains in an array is working perfectly.

value = "a"

list1 = ["a","b","c","d"]

value =~ list1

But if both are list, as given below, it is not working.

list1 = ["a","b","c","d"]

list2 = ["b","c"]

How will I check list2 =~ list1

Answer 1

This is a limitation in JEXL 3.2.1 fixed in JEXL 3.3 (snapshot). You may overcome it by deriving JexlArithmetic and overriding the 'contains' method which is called when evaluating the 'in/matches' operator. You may want to look at https://github.com/apache/commons-jexl/blob/master/src/main/java/org/apache/commons/jexl3/JexlArithmetic.java around line 1610 which will give you a potential solution.