measure/src/main/scala/org/apache/griffin/measure/step/transform/DataFrameOpsTransformStep.scala

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  http://www.apache.org/licenses/LICENSE-2.0

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package org.apache.griffin.measure.step.transform

import org.apache.griffin.measure.context.DQContext
import org.apache.griffin.measure.step.write.WriteStep

/**
  * data frame ops transform step
  */
case class DataFrameOpsTransformStep[T <: WriteStep](name: String,
                                     inputDfName: String,
                                     rule: String,
                                     details: Map[String, Any],
                                     writeStepOpt: Option[T] = None,
                                     cache: Boolean = false
                                    ) extends TransformStep {

  def doExecute(context: DQContext): Boolean = {
    val sqlContext = context.sqlContext
    try {
      val df = rule match {
        case DataFrameOps._fromJson => DataFrameOps.fromJson(sqlContext, inputDfName, details)
        case DataFrameOps._accuracy =>
          DataFrameOps.accuracy(sqlContext, inputDfName, context.contextId, details)

        case DataFrameOps._clear => DataFrameOps.clear(sqlContext, inputDfName, details)
        case _ => throw new Exception(s"df opr [ ${rule} ] not supported")
      }
      if (cache) context.dataFrameCache.cacheDataFrame(name, df)
      context.runTimeTableRegister.registerTable(name, df)
      writeStepOpt match {
        case Some(writeStep) => writeStep.execute(context)
        case None => true
      }
    } catch {
      case e: Throwable =>
        error(s"run data frame ops [ ${rule} ] error: ${e.getMessage}", e)
        false
    }
  }

}