Examples of com.salesforce.phoenix.iterate.FilterAggregatingResultIterator

com.salesforce.phoenix.iterate.FilterAggregatingResultIterator
Post aggregation filter for HAVING clause. Due to the way we cache aggregation values we cannot have a look ahead for this Iterator, because the expressions in the SELECT clause would return values for the peeked row instead of the current row. If we only use the Result argument in {@link com.salesforce.phoenix.expression.Expression}instead of our cached value in Aggregators, we could have a look ahead. @author jtaylor @since 0.1

        } else {
            aggResultIterator = new GroupedAggregatingResultIterator(new MergeSortRowKeyResultIterator(parallelIterators), aggregators);
        }


        if (having != null) {
            aggResultIterator = new FilterAggregatingResultIterator(aggResultIterator, having);
        }
        
        if (statement.isDistinct() && statement.isAggregate()) { // Dedup on client if select distinct and aggregation
            aggResultIterator = new DistinctAggregatingResultIterator(aggResultIterator, getProjector());
        }

View Full Code Here

TOP

Related Classes of com.salesforce.phoenix.iterate.FilterAggregatingResultIterator

com.salesforce.phoenix.execute.AggregatePlan

com.salesforce.phoenix.schema.tuple.Tuple

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.