| /* |
| 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] |
| |
| } |