[jira] [Commented] (CASSANDRA-10819) Generic Java UDF types

["Paulo Motta (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-10819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15279358#comment-15279358 ] 

Paulo Motta commented on CASSANDRA-10819:
-----------------------------------------

Is this fixed? Trying the following example from [here|http://www.doanduyhai.com/blog/?p=1876]:
{noformat}
CREATE OR REPLACE FUNCTION cumulateCounter(state map<text,bigint>, category text, count counter)
RETURNS NULL ON NULL INPUT
RETURNS map<text,bigint>
LANGUAGE java
AS '
if(state.containsKey(category)) {
  state.put(category, state.get(category) + count); 
} else {
  state.put(category, count);
}
return state;
'; 
{noformat}

On trunk still gives:
{noformat}
InvalidRequest: code=2200 [Invalid query] message="Could not compile function 'bla.cumulatecounter' from Java source: org.apache.cassandra.exceptions.InvalidRequestException: Java source compilation failed:
Line 3: The operator + is undefined for the argument type(s) Object, long
Line 5: Type safety: The method put(Object, Object) belongs to the raw type Map. References to generic type Map<K,V> should be parameterized
Line 7: Type safety: The expression of type Map needs unchecked conversion to conform to Map<String,Long>
{noformat}


> Generic Java UDF types
> ----------------------
>
>                 Key: CASSANDRA-10819
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10819
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: CQL
>            Reporter: Robert Stupp
>            Assignee: Robert Stupp
>            Priority: Minor
>              Labels: UDF, doc-impacting
>             Fix For: 3.4
>
>
> At the moment we only generate raw type signatures for Java UDF methods. E.g. a CQL argument type {{map<int, text>}} is just mapped to {{java.util.Map}} but could be mapped to {{java.util.Map<Integer, String>}}.
> It's a probably simple but nice improvement and feels to be a LHF.
> Depending on the complexity it might be doable for 3.0.x, too.
> Thanks for the heads-up, [~doanduyhai]!



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