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: 8.0.2.Final Reporter: Adrian Nistor Assignee: Adrian Nistor Fix For: 8.2.0.Beta1, 8.2.0.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}