| /* |
| 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.context |
| |
| import org.apache.griffin.measure.Loggable |
| import org.apache.spark.sql._ |
| |
| import scala.collection.mutable.{Set => MutableSet} |
| |
| /** |
| * register table name |
| */ |
| trait TableRegister extends Loggable with Serializable { |
| |
| protected val tables: MutableSet[String] = MutableSet() |
| |
| def registerTable(name: String): Unit = { |
| tables += name |
| } |
| |
| def existsTable(name: String): Boolean = { |
| tables.exists(_.equals(name)) |
| } |
| |
| def unregisterTable(name: String): Unit = { |
| if (existsTable(name)) tables -= name |
| } |
| def unregisterAllTables(): Unit = { |
| tables.clear |
| } |
| |
| def getTables(): Set[String] = { |
| tables.toSet |
| } |
| |
| } |
| |
| /** |
| * register table name when building dq job |
| */ |
| case class CompileTableRegister() extends TableRegister {} |
| |
| /** |
| * register table name and create temp view during calculation |
| */ |
| case class RunTimeTableRegister(@transient sqlContext: SQLContext) extends TableRegister { |
| |
| def registerTable(name: String, df: DataFrame): Unit = { |
| registerTable(name) |
| df.createOrReplaceTempView(name) |
| } |
| |
| override def unregisterTable(name: String): Unit = { |
| if (existsTable(name)) { |
| sqlContext.dropTempTable(name) |
| tables -= name |
| } |
| } |
| override def unregisterAllTables(): Unit = { |
| val uts = getTables |
| uts.foreach(t => sqlContext.dropTempTable(t)) |
| tables.clear |
| } |
| |
| } |