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Improve json serde error in evalMetFromJson #380

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merged 4 commits into from
Aug 8, 2019
Merged

Improve json serde error in evalMetFromJson #380

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e91e59f
Improve json serde error in evalMetFromJson
gerashegalov Aug 5, 2019
601e677
add test
gerashegalov Aug 5, 2019
c1dd0f5
code check fix
gerashegalov Aug 5, 2019
ce76d38
fix metric class name
gerashegalov Aug 7, 2019
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fix metric class name
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@gerashegalov
gerashegalov committed Aug 7, 2019
commit ce76d38dd6e9ff73597343649bc7c95dcdb3eb0e
5 changes: 2 additions & 3 deletions core/src/main/scala/com/salesforce/op/stages/impl/selector/ModelSelectorSummary.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -234,10 +234,9 @@ case object ModelSelectorSummary {
*/
private[selector] def evalMetFromJson(className: String, json: String): Try[EvaluationMetrics] = {
def error(c: Class[_], t: Throwable): Try[MultiMetrics] = Failure[MultiMetrics] {
new IllegalArgumentException(
s"""Could not extract metrics of type ${classOf[MultiMetrics]}
|from:$json""".stripMargin, t)
new IllegalArgumentException(s"Could not extract metrics of type $c from: $json", t)
}

ReflectionUtils.classForName(className) match {
case n if n == classOf[MultiMetrics] =>
JsonUtils.fromString[Map[String, Map[String, Any]]](json).map{ d =>
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3 changes: 3 additions & 0 deletions core/src/test/scala/com/salesforce/op/stages/impl/selector/ModelSelectorSummaryTest.scala
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Expand Up @@ -126,6 +126,9 @@ class ModelSelectorSummaryTest extends FlatSpec with TestSparkContext {
val thr = intercept[IllegalArgumentException](ModelSelectorSummary.evalMetFromJson(
classOf[MultiClassificationMetrics].getName, corruptJson).get)

thr.getMessage should startWith ("Could not extract metrics of type class " +
"com.salesforce.op.evaluators.MultiClassificationMetrics from: {")

thr.getCause.getMessage shouldEqual "Unsupported format. Supported formats: json, yaml"
}
}