如何解决此错误“未找到:值BMValsProcessor"； [英] How to fix this error "not found: value BMValsProcessor"

问题描述

如何在此代码中解决此错误

 特征处理器00 {def process(oraOptionDfConfig:DataFrameReader，sparkSession:SparkSession):单位}BMValsProcessor类扩展了处理器{def process(oraOptionDfConfig:DataFrameReader，sparkSession:SparkSession):单位= {println("in BMValsProcessor")///实际业务逻辑}}BMValsProcessor2类扩展了处理器{def process(oraOptionDfConfig:DataFrameReader，sparkSession:SparkSession):单位= {println("in BMValsProcessor2")//实际的业务逻辑}}对象ValProcessor {def main(args:Array [String]):Unit = {val df:DataFrameReader = null;//初始化DataFrameReaderval spark:SparkSession = null;//SparkSession的初始化val procs:Map [String，(DataFrameReader，SparkSession)=>单位] = getAllDefinedProcessors();procs.values.foreach(proc =>proc(df，spark))}def getAllDefinedProcessors():Map [String，(DataFrameReader，SparkSession)=>单位] = {val myFuncs2:Map [String，()=>单位] =地图("bm_vals"->(()=> BMValsProcessor().process)，//错误"bm_vals2"->(()=> BMValsProcessor2().process)//错误)myFuncs2;}} 

错误是:

未找到:值BMValsProcessor

解决方案

表达式 BMValsProcessor()是对象 BMValsProcessor 的调用方法 apply

查看 https://gist.github.com/AndriiStefaniv/902938c71440c3f25769528e5c730d4f >

我试图修复它.

How to fix this error in this code

trait Processor00 {
  def process(oraOptionDfConfig: DataFrameReader, sparkSession: SparkSession ): Unit 
}

class BMValsProcessor extends Processor  {
   def process(oraOptionDfConfig: DataFrameReader, sparkSession: SparkSession ) : Unit ={
     println("in BMValsProcessor")///actual business logic
   }
}

class BMValsProcessor2 extends Processor  {
   def process(oraOptionDfConfig: DataFrameReader, sparkSession: SparkSession ) : Unit ={
     println("in BMValsProcessor2") //actual business logic
   }
}

object ValProcessor {
   def main( args : Array[String]):Unit ={

     val df : DataFrameReader = null; // initialization of DataFrameReader
     val spark: SparkSession = null; // initialization of SparkSession

      val procs :Map[String, (DataFrameReader, SparkSession) => Unit] = getAllDefinedProcessors();

       procs.values.foreach(
                proc => proc(df,spark) 
        )
   }

    def getAllDefinedProcessors(): Map[String, (DataFrameReader, SparkSession) => Unit] = {
     val myFuncs2 : Map[String, () => Unit]=
      Map(
        "bm_vals" -> (() =>  BMValsProcessor().process), //Error
        "bm_vals2" -> (() => BMValsProcessor2().process) //Error
      )
      myFuncs2;
   }

}

The error is:

not found: value BMValsProcessor

解决方案

Expression BMValsProcessor() is call method apply of object BMValsProcessor

Look into https://gist.github.com/AndriiStefaniv/902938c71440c3f25769528e5c730d4f

I tried to fix it.

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