c04ad17ccf
## What changes were proposed in this pull request? Add a trait HasTrainingSummary to avoid code duplicate related to training summary. Currently all the training summary use the similar pattern which can be generalized, ``` private[ml] final var trainingSummary: Option[T] = None def hasSummary: Boolean = trainingSummary.isDefined def summary: T = trainingSummary.getOrElse... private[ml] def setSummary(summary: Option[T]): ... ``` Classes with the trait need to override `setSummry`. And for Java compatibility, they will also have to override `summary` method, otherwise the java code will regard all the summary class as Object due to a known issue with Scala. ## How was this patch tested? existing Java and Scala unit tests Closes #17654 from hhbyyh/hassummary. Authored-by: Yuhao Yang <yuhao.yang@intel.com> Signed-off-by: Sean Owen <sean.owen@databricks.com> |
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