Github user sethah commented on a diff in the pull request:
https://github.com/apache/spark/pull/11663#discussion_r56547314
--- Diff: python/pyspark/ml/param/__init__.py ---
@@ -65,6 +72,106 @@ def __eq__(self, other):
return False
+class TypeConverters(object):
+ """
+ .. note:: DeveloperApi
+
+ Factory methods for common type conversion functions for
`Param.typeConverter`.
+
+ .. versionadded:: 2.0.0
+ """
+
+ @staticmethod
+ def _is_numeric(value):
+ vtype = type(value)
+ return vtype == int or vtype == float or vtype == np.float64 \
+ or vtype == np.int64 or vtype.__name__ == 'long'
+
+ @staticmethod
+ def _can_convert_to_list(value):
+ vtype = type(value)
+ return vtype == list or vtype == np.ndarray or isinstance(value,
Vector)
+
+ @staticmethod
+ def identity(value):
+ """
+ Dummy converter that just returns value.
+ """
+ return value
+
+ @staticmethod
+ def convertToList(value):
--- End diff --
Changed all methods to `toX` instead of `convertToX`
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