[infinispan-issues] [JBoss JIRA] (ISPN-6076) Errors when the same column is both a gouping column and an aggregation column

[RH Bugzilla Integration (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-6076?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

RH Bugzilla Integration updated ISPN-6076:
------------------------------------------
    Bugzilla References: https://bugzilla.redhat.com/show_bug.cgi?id=1333297
        Bugzilla Update: Perform


> Errors when the same column is both a gouping column and an aggregation column
> ------------------------------------------------------------------------------
>
>                 Key: ISPN-6076
>                 URL: https://issues.jboss.org/browse/ISPN-6076
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Embedded Querying
>    Affects Versions: 8.1.0.Final, 8.0.2.Final
>            Reporter: Adrian Nistor
>            Assignee: Adrian Nistor
>             Fix For: 8.2.0.Beta1, 8.2.0.Final, 8.1.1.Final
>
>
> This should not be allowed.
> {code}
>    public void testGroupingAndAggregationOnSameField() {
>       QueryFactory qf = getQueryFactory();
>       Query q = qf.from(getModelFactory().getUserImplClass())
>             .select(Expression.count("surname"), Expression.sum("addresses.number"))
>             .groupBy("surname")
>             .build();
>       List<Object[]> list = q.list(); // throws ClassCastException
>    }
> {code}
> {code}
> java.lang.ClassCastException: java.lang.String cannot be cast to org.infinispan.objectfilter.impl.aggregation.Counter
> 	at org.infinispan.objectfilter.impl.aggregation.CountAccumulator.merge(CountAccumulator.java:24)
> 	at org.infinispan.objectfilter.impl.aggregation.FieldAccumulator.merge(FieldAccumulator.java:42)
> 	at org.infinispan.objectfilter.impl.aggregation.Grouper.addRow(Grouper.java:133)
> 	at org.infinispan.query.dsl.embedded.impl.AggregatingQuery.getBaseIterator(AggregatingQuery.java:52)
> 	at org.infinispan.query.dsl.embedded.impl.HybridQuery$1.<init>(HybridQuery.java:47)
> 	at org.infinispan.query.dsl.embedded.impl.HybridQuery.getIterator(HybridQuery.java:45)
> 	at org.infinispan.query.dsl.embedded.impl.BaseEmbeddedQuery.listInternal(BaseEmbeddedQuery.java:65)
> 	at org.infinispan.query.dsl.embedded.impl.BaseEmbeddedQuery.list(BaseEmbeddedQuery.java:57)
> 	at org.infinispan.query.dsl.embedded.impl.DelegatingQuery.list(DelegatingQuery.java:45)
> 	at org.infinispan.query.dsl.embedded.QueryDslConditionsTest.testEmbeddedSum(QueryDslConditionsTest.java:1959)
> {code}



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