private def convertibleFiltersHelper()

in spark/src/main/scala/org/apache/comet/parquet/ParquetFilters.scala [580:613]

32 lines of code
14 McCabe index (conditional complexity)


  private def convertibleFiltersHelper(
      predicate: sources.Filter,
      canPartialPushDown: Boolean): Option[sources.Filter] = {
    predicate match {
      case sources.And(left, right) =>
        val leftResultOptional = convertibleFiltersHelper(left, canPartialPushDown)
        val rightResultOptional = convertibleFiltersHelper(right, canPartialPushDown)
        (leftResultOptional, rightResultOptional) match {
          case (Some(leftResult), Some(rightResult)) => Some(sources.And(leftResult, rightResult))
          case (Some(leftResult), None) if canPartialPushDown => Some(leftResult)
          case (None, Some(rightResult)) if canPartialPushDown => Some(rightResult)
          case _ => None
        }

      case sources.Or(left, right) =>
        val leftResultOptional = convertibleFiltersHelper(left, canPartialPushDown)
        val rightResultOptional = convertibleFiltersHelper(right, canPartialPushDown)
        if (leftResultOptional.isEmpty || rightResultOptional.isEmpty) {
          None
        } else {
          Some(sources.Or(leftResultOptional.get, rightResultOptional.get))
        }
      case sources.Not(pred) =>
        val resultOptional = convertibleFiltersHelper(pred, canPartialPushDown = false)
        resultOptional.map(sources.Not)

      case other =>
        if (createFilter(other).isDefined) {
          Some(other)
        } else {
          None
        }
    }
  }