| /* |
| * 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.builder |
| |
| import org.apache.griffin.measure.configuration.dqdefinition.{DataConnectorParam, DataSourceParam} |
| import org.apache.griffin.measure.context.DQContext |
| import org.apache.griffin.measure.step.DQStep |
| import org.apache.griffin.measure.step.read._ |
| |
| /** |
| * build dq step by data source param |
| */ |
| trait DataSourceParamStepBuilder extends DQStepBuilder { |
| |
| type ParamType = DataSourceParam |
| |
| def buildDQStep(context: DQContext, param: ParamType): Option[DQStep] = { |
| val name = getStepName(param.getName) |
| val steps = param.getConnectors.flatMap { dc => |
| buildReadSteps(context, dc) |
| } |
| if (steps.nonEmpty) Some(UnionReadStep(name, steps)) |
| else None |
| } |
| |
| protected def buildReadSteps(context: DQContext, dcParam: DataConnectorParam): Option[ReadStep] |
| |
| } |