| /* |
| * 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.spark.sql.execution.command.mutation.merge |
| |
| /** |
| * It manages the transaction number for update or delete operations. Since we are applying update |
| * and delete delta records in a separate transactions it is required to keep track of transaction |
| * numbers. |
| */ |
| case class TranxManager(factTimestamp: Long) { |
| |
| private var newFactTimestamp: Long = factTimestamp |
| private var mutationMap = Map.empty[MutationAction, Long] |
| |
| def getNextTransaction(mutationAction: MutationAction): Long = { |
| if (mutationMap.isEmpty) { |
| mutationMap ++= Map[MutationAction, Long]((mutationAction, newFactTimestamp)) |
| } else { |
| if (mutationMap.get(mutationAction).isDefined) { |
| return mutationMap(mutationAction) |
| } else { |
| newFactTimestamp = newFactTimestamp + 1 |
| mutationMap ++= Map[MutationAction, Long]((mutationAction, newFactTimestamp)) |
| } |
| } |
| newFactTimestamp |
| } |
| |
| def getLatestTrx: Long = newFactTimestamp |
| |
| def getUpdateTrx: Long = { |
| val map = mutationMap.filter(_._1.isInstanceOf[HandleUpdateAction]) |
| if (map.isEmpty) { |
| -1 |
| } else { |
| map.head._2 |
| } |
| } |
| |
| def getDeleteTrx: Long = { |
| val map = mutationMap.filter(_._1.isInstanceOf[HandleDeleteAction]) |
| if (map.isEmpty) { |
| -1 |
| } else { |
| map.head._2 |
| } |
| } |
| } |