| /* |
| * 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.wayang.flink.operators; |
| |
| import java.io.Serializable; |
| import java.util.Collection; |
| import org.apache.wayang.core.optimizer.OptimizationContext; |
| import org.apache.wayang.core.plan.wayangplan.ExecutionOperator; |
| import org.apache.wayang.core.platform.ChannelInstance; |
| import org.apache.wayang.core.platform.lineage.ExecutionLineageNode; |
| import org.apache.wayang.core.util.Tuple; |
| import org.apache.wayang.flink.execution.FlinkExecutor; |
| import org.apache.wayang.flink.platform.FlinkPlatform; |
| |
| /** |
| * Execution operator for the Flink platform. |
| */ |
| public interface FlinkExecutionOperator extends ExecutionOperator, Serializable { |
| |
| @Override |
| default FlinkPlatform getPlatform() { |
| return FlinkPlatform.getInstance(); |
| } |
| |
| Tuple<Collection<ExecutionLineageNode>, Collection<ChannelInstance>> evaluate( |
| ChannelInstance[] inputs, |
| ChannelInstance[] outputs, |
| FlinkExecutor flinkExecutor, |
| OptimizationContext.OperatorContext operatorContext) throws Exception; |
| |
| /** |
| * Tell whether this instances is a Flink action. This is important to keep track on when Flink is actually |
| * initialized. |
| * |
| * @return whether this instance issues Flink actions |
| */ |
| boolean containsAction(); |
| |
| default <Type> Collection<Type> getBroadCastFunction(String name){ |
| return null; |
| } |
| |
| } |