| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.griffin.measure.step.transform |
| |
| import scala.util.Try |
| |
| import org.apache.griffin.measure.context.DQContext |
| import org.apache.griffin.measure.step.write.WriteStep |
| |
| /** |
| * spark sql transform step |
| */ |
| case class SparkSqlTransformStep[T <: WriteStep]( |
| name: String, |
| rule: String, |
| details: Map[String, Any], |
| writeStepOpt: Option[T] = None, |
| cache: Boolean = false) |
| extends TransformStep { |
| |
| def doExecute(context: DQContext): Try[Boolean] = |
| Try { |
| val sparkSession = context.sparkSession |
| val df = sparkSession.sql(rule) |
| if (cache) context.dataFrameCache.cacheDataFrame(name, df) |
| context.runTimeTableRegister.registerTable(name, df) |
| writeStepOpt match { |
| case Some(writeStep) => writeStep.execute(context) |
| case None => Try(true) |
| } |
| }.flatten |
| |
| } |