Java CombinerDefinition.getIntermediateFields示例

示例#1

文件： MultiCombiner.java 项目： LiveRamp/cascading_ext

  public static Fields getIntermediateFields(List<CombinerDefinition> combinerDefinitions) {
    Fields summedIntermediateFields = new Fields(MultiCombiner.ID_FIELD);

    for (CombinerDefinition combinerDefinition : combinerDefinitions) {
      summedIntermediateFields =
          Fields.merge(
              summedIntermediateFields,
              combinerDefinition.getGroupFields(),
              combinerDefinition.getIntermediateFields());
    }
    return summedIntermediateFields;
  }