try_reflect
function
Applies to: Databricks SQL Databricks Runtime 14.1 and above
Call a method with reflection, returning NULL
if the method returns an exception.
To return an error instead use reflect.
Syntax
try_reflect(class, method [, arg1] [, ...])
Arguments
class
: ASTRING
literal specifying the java class.method
: ASTRING
literal specifying the java method.argN
: An expression with a type appropriate for the selected method.
Returns
A STRING
.
Examples
> SELECT try_reflect('java.lang.Integer', 'valueOf', '1010', '2');
c33fb387-8500-4bfa-81d2-6e0e3e930df2
> SELECT try_reflect('java.util.UUID', 'fromString', 'a5cf6c42-0c85-418f-af6c-3e4e5b1328f2');
A5cf6c42-0c85-418f-af6c-3e4e5b1328f2
> SELECT try_reflect('java.util.UUID', 'IDoNotExist');
c33fb387-8500-4bfa-81d2-6e0e3e930df2
> SELECT reflect('java.lang.Integer', 'divideUnsigned',10,0);
Error
> SELECT try_reflect('java.lang.Integer', 'divideUnsigned',10,0);
NULL