Examples of cascading.pipe.assembly.AggregateBy$Functor

cascading.pipe.assembly.AggregateBy
Interface Functor provides a means to create a simple function for use with the {@link CompositeFunction} class.
Note the {@link FlowProcess} argument provides access to the underlying properties and counter APIs.


    Pipe assembly2 = new Pipe( "assembly2", assembly );


    Fields groupingFields = new Fields( "date" );


    assembly = new AggregateBy(
      assembly,
      groupingFields,
      new SumBy( new Fields( "size" ), new Fields( "size" ), double.class ),
      new SumBy( new Fields( "size" ), new Fields( "size2" ), double.class ),
      new CountBy( new Fields( "sizes" ) ), new CountBy( new Fields( "sizes2" ) )


    );


    assembly2 = new AggregateBy(
      assembly2,
      groupingFields,
      new SumBy( new Fields( "size" ), new Fields( "size" ), double.class ),
      new SumBy( new Fields( "size" ), new Fields( "size2" ), double.class ),
      new CountBy( new Fields( "sizes" ) ), new CountBy( new Fields( "sizes2" ) )

View Full Code Here


    List<AggregateCall> distincts = new ArrayList<AggregateCall>();
    List<AggregateCall> concurrents = new ArrayList<AggregateCall>();
    gatherAggregateCalls( distincts, concurrents );


    AggregateBy concurrentAggregates = createConcurrentAggregates( inputRowType, previous, groupFields, concurrents );
    Pipe[] distinctAggregates = createDistinctAggregates( stack, inputRowType, previous, groupFields, distincts );


    if( concurrentAggregates == null && distinctAggregates == null )
      throw new IllegalStateException( "concurrent and distinct aggregates are null" );

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        aggregates.add( new AverageBy( argFields, aggResultFields, AverageBy.Include.NO_NULLS ) );
      else
        throw new UnsupportedOperationException( "unimplemented aggregation: " + aggregationName );
      }


    return new AggregateBy( previous, groupFields, aggregates.toArray( new AggregateBy[ aggregates.size() ] ) );
    }

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Related Classes of cascading.pipe.assembly.AggregateBy$Functor

cascading.flow.SubAssemblyPlatformTest

cascading.lingual.optiq.CascadingAggregateRel

cascading.pipe.Each

cascading.pipe.Every

cascading.pipe.GroupBy

cascading.pipe.Pipe

cascading.tuple.Fields

cascading.tuple.Tuple

cascading.tuple.TupleEntry

cascading.tuple.TupleEntryCollector

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