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https://issues.apache.org/jira/browse/CASSANDRA-14127?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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FAGIM SADYKOV updated CASSANDRA-14127:
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Summary: Cannot use Comparator in UDF (was: Cannot use UDTValue in UDF)
> Cannot use Comparator in UDF
> -----------------------------
>
> Key: CASSANDRA-14127
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14127
> Project: Cassandra
> Issue Type: Bug
> Components: CQL
> Reporter: FAGIM SADYKOV
> Fix For: 3.11.x
>
>
> Try to create UDF
> {code:java}
> CREATE OR REPLACE FUNCTION max_x_plus_y (input set<frozen<some_record>>)
> CALLED ON NULL INPUT RETURNS some_record
> LANGUAGE java AS '
> return Collections.max(input, new Comparator<UDTValue>() {
> @Override
> public int compare(UDTValue first, UDTValue second) {
> int firstsum = first.getInt("x")+first.getInt("y");
> int secondsum = second.getInt("x")+second.getInt("y");
> return Integer.compare(firstsum,secondsum);
> }
> });
> ';
> {code}
> I got error:
> {code:log}
> com.datastax.driver.core.exceptions.InvalidQueryException: Java source
> compilation failed:
> GENERATED SOURCE ERROR: line 1 (in generated source): The type
> java.util.function.ToLongFunction cannot be resolved. It is indirectly
> referenced from required .class files
> GENERATED SOURCE ERROR: line 1 (in generated source): The type
> java.util.function.ToIntFunction cannot be resolved. It is indirectly
> referenced from required .class files
> GENERATED SOURCE ERROR: line 1 (in generated source): The type
> java.util.function.ToDoubleFunction cannot be resolved. It is indirectly
> referenced from required .class files
> GENERATED SOURCE ERROR: line 1 (in generated source): The type
> java.util.function.Function cannot be resolved. It is indirectly referenced
> from required .class files
> {code}
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