| /* |
| * 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.core.platform.lineage; |
| |
| import java.util.Collection; |
| import java.util.LinkedList; |
| import org.apache.wayang.core.optimizer.OptimizationContext; |
| import org.apache.wayang.core.optimizer.costs.LoadProfileEstimator; |
| import org.apache.wayang.core.plan.wayangplan.ExecutionOperator; |
| import org.apache.wayang.core.platform.AtomicExecution; |
| |
| /** |
| * Encapsulates {@link AtomicExecution}s with a common {@link OptimizationContext.OperatorContext} in a lazy execution lineage. |
| */ |
| public class ExecutionLineageNode extends LazyExecutionLineageNode { |
| |
| /** |
| * The {@link OptimizationContext.OperatorContext} of the encapsulated {@link ExecutionOperator}. |
| */ |
| private final OptimizationContext.OperatorContext operatorContext; |
| |
| /** |
| * The encapsulated {@link AtomicExecution}s. |
| */ |
| private final Collection<AtomicExecution> atomicExecutions; |
| |
| public ExecutionLineageNode(final OptimizationContext.OperatorContext estimationContext) { |
| this.operatorContext = estimationContext; |
| this.atomicExecutions = new LinkedList<>(); |
| } |
| |
| /** |
| * Adds an {@link AtomicExecution} to this instance. |
| * |
| * @param atomicExecution the {@link AtomicExecution} |
| * @return this instance |
| */ |
| public ExecutionLineageNode add(AtomicExecution atomicExecution) { |
| this.atomicExecutions.add(atomicExecution); |
| return this; |
| } |
| |
| /** |
| * Adds an {@link AtomicExecution} to this instance. Short-cut for {@link #add(AtomicExecution)}. |
| * |
| * @param loadProfileEstimator for which the {@link AtomicExecution} should be added |
| * @return this instance |
| */ |
| public ExecutionLineageNode add(LoadProfileEstimator loadProfileEstimator) { |
| return this.add(new AtomicExecution(loadProfileEstimator)); |
| } |
| |
| /** |
| * Adds an {@link AtomicExecution} for the {@link LoadProfileEstimator} of the described {@link OptimizationContext.OperatorContext}. |
| * |
| * @return this instance |
| */ |
| public ExecutionLineageNode addAtomicExecutionFromOperatorContext() { |
| return this.add(this.operatorContext.getLoadProfileEstimator()); |
| } |
| |
| /** |
| * Retrieve the {@link OptimizationContext.OperatorContext} corresponding to this instance. |
| * |
| * @return the {@link OptimizationContext.OperatorContext} |
| */ |
| public OptimizationContext.OperatorContext getOperatorContext() { |
| return this.operatorContext; |
| } |
| |
| /** |
| * Retrieve the encapsulated {@link AtomicExecution}s |
| * |
| * @return the {@link AtomicExecution}s |
| */ |
| public Collection<AtomicExecution> getAtomicExecutions() { |
| return this.atomicExecutions; |
| } |
| |
| @Override |
| protected <T> T accept(T accumulator, Aggregator<T> aggregator) { |
| return aggregator.aggregate(accumulator, this); |
| } |
| |
| @Override |
| public String toString() { |
| return "ExecutionLineageNode[" + this.operatorContext + ']'; |
| } |
| } |