[CASSANDRA-13891] fromJson(null) throws java.lang.NullPointerException on Cassandra

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.2.13, 3.0.17, 3.11.3, 4.0-alpha1, 4.0
• Component/s: Legacy/CQL

Environment

Cassandra 3.11

• Severity: Low
• Assignee: Edward Ribeiro
• Reporter: Marcel Villet

Authors

Edward Ribeiro

Reviewers

Jason Brown

• Created: 21/Sep/17 16:15
• Updated: 16/Mar/22 11:36
• Resolved: 05/Apr/18 13:24

Description

Basically, fromJson throws a java.lang.NullPointerException when NULL is passed, instead of just returning a NULL itself. Say I create a UDT and a table as follows:

create type type1
(
id int,
name text
);

create table table1
(
id int,
t FROZEN<type1>,

primary key (id)
);

And then try and insert a row as such:

insert into table1 (id, t) VALUES (1, fromJson(null));

I get the error: java.lang.NullPointerException

This works as expected: insert into table1 (id, t) VALUES (1, null);

Programmatically, one does not always know when a UDT will be null, hence me expecting fromJson to just return NULL.