How to use

getField

method

in

org.jpmml.converter.Feature

  static
  public Feature encodeFeature(Feature feature, Object replacementValue, MissingValueTreatmentMethod missingValueTreatmentMethod){
    ModelEncoder encoder = (ModelEncoder)feature.getEncoder();

    Field<?> field = feature.getField();

    if(field instanceof DataField){
      MissingValueDecorator missingValueDecorator = new MissingValueDecorator()
        .setMissingValueReplacement(ValueUtil.formatValue(replacementValue))
        .setMissingValueTreatment(missingValueTreatmentMethod);

      encoder.addDecorator(feature.getName(), missingValueDecorator);

      return feature;
    } else

    {
      throw new IllegalArgumentException();
    }
  }
}

  @Override
  public List<Feature> encodeFeatures(SparkMLEncoder encoder){
    RegexTokenizer transformer = getTransformer();

    if(!transformer.getGaps()){
      throw new IllegalArgumentException("Expected splitter mode, got token matching mode");
    } // End if

    if(transformer.getMinTokenLength() != 1){
      throw new IllegalArgumentException("Expected 1 as minimum token length, got " + transformer.getMinTokenLength() + " as minimum token length");
    }

    Feature feature = encoder.getOnlyFeature(transformer.getInputCol());

    Field<?> field = feature.getField();

    if(transformer.getToLowercase()){
      Apply apply = PMMLUtil.createApply("lowercase", feature.ref());

      field = encoder.createDerivedField(FeatureUtil.createName("lowercase", feature), OpType.CATEGORICAL, DataType.STRING, apply);
    }

    return Collections.singletonList(new DocumentFeature(encoder, field, transformer.getPattern()));
  }
}

static
public Feature encodeFeature(Feature feature, Object missingValue, Object replacementValue, MissingValueTreatmentMethod missingValueTreatmentMethod, SkLearnEncoder encoder){
  Field<?> field = feature.getField();