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https://issues.apache.org/jira/browse/CASSANDRA-13891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16425546#comment-16425546
 ] 

Edward Ribeiro commented on CASSANDRA-13891:
--------------------------------------------

Sure! Gonna try to repro on 2.2 and 3.0 for double check, no problem. Thanks 
again, Jason!

> fromJson(null) throws java.lang.NullPointerException on Cassandra
> -----------------------------------------------------------------
>
>                 Key: CASSANDRA-13891
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13891
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>         Environment: Cassandra 3.11
>            Reporter: Marcel Villet
>            Assignee: Edward Ribeiro
>            Priority: Minor
>             Fix For: 4.0, 3.11.3
>
>         Attachments: CASSANDRA-13891.patch
>
>
> 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:
> {code:java}
> create type type1
> (
> id int,
> name text
> );
> create table table1
> (
> id int,
> t FROZEN<type1>,
> primary key (id)
> );{code}
> 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.



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