Examples of cascading.operation.aggregator.MaxValue

cascading.operation.aggregator.MaxValue
Class MaxValue is an {@link cascading.operation.Aggregator} that returns the maximum value encountered in thecurrent group.
As opposed to the {@link Max} class, values are expected to be {@link Comparable} types vs numeric representations andthe {@link Comparable#compareTo(Object)} result is use for max comparison.

    Pipe right = new Each( new Pipe( "right" ), new Fields( "line" ), new RegexFilter( ".*192.*" ) );


    Fields[] fields = Fields.fields( new Fields( "offset" ), new Fields( "offset" ) );
    Pipe merge = new HashJoin( "join", Pipe.pipes( left, right ), fields, Fields.size( 4 ), new InnerJoin() );


    merge = new Every( merge, new MaxValue() );


    Map sources = new HashMap();
    sources.put( "left", source1 );
    sources.put( "right", source2 );

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   * @param maxField   of type Fields
   */
  @ConstructorProperties({"valueField", "maxField"})
  public MaxBy( Fields valueField, Fields maxField )
    {
    super( valueField, new MaxPartials( maxField ), new MaxValue( maxField ) );
    }

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   * @param threshold      of type int
   */
  @ConstructorProperties({"name", "pipes", "groupingFields", "valueField", "maxField", "threshold"})
  public MaxBy( String name, Pipe[] pipes, Fields groupingFields, Fields valueField, Fields maxField, int threshold )
    {
    super( name, pipes, groupingFields, valueField, new MaxPartials( maxField ), new MaxValue( maxField ), threshold );
    }

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Related Classes of cascading.operation.aggregator.MaxValue

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cascading.pipe.assembly.MaxBy

cascading.tuple.Fields

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