srowen commented on a change in pull request #26370: [SPARK-29727][ML][PYTHON]
Use UnaryTransformer as parent class for single input column transformers in
PySpark
URL: https://github.com/apache/spark/pull/26370#discussion_r342186243
##########
File path: python/pyspark/ml/feature.py
##########
@@ -1014,10 +1015,21 @@ def setOutputCol(self, value):
"""
return self._set(outputCol=value)
+ def createTransformFunc(self):
+ self._transfer_params_to_java()
+ return self._java_obj.createTransformFunc()
+
+ def outputDataType(self):
+ self._transfer_params_to_java()
+ return self._java_obj.outputDataType()
+
+ def validateInputType(self, inputType):
+ self._transfer_params_to_java()
+ self._java_obj.validateInputType(inputType)
+
Review comment:
For now, yeah we need to support Python 2, still
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