| /** |
| * 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.tajo.engine.planner.physical; |
| |
| import org.apache.tajo.catalog.statistics.TableStats; |
| import org.apache.tajo.worker.TaskAttemptContext; |
| import org.apache.tajo.catalog.Schema; |
| |
| import java.io.IOException; |
| |
| public abstract class BinaryPhysicalExec extends PhysicalExec { |
| protected PhysicalExec leftChild; |
| protected PhysicalExec rightChild; |
| protected float progress; |
| protected TableStats inputStats; |
| |
| public BinaryPhysicalExec(final TaskAttemptContext context, |
| final Schema inSchema, final Schema outSchema, |
| final PhysicalExec outer, final PhysicalExec inner) { |
| super(context, inSchema, outSchema); |
| this.leftChild = outer; |
| this.rightChild = inner; |
| this.inputStats = new TableStats(); |
| } |
| |
| public PhysicalExec getLeftChild() { |
| return leftChild; |
| } |
| |
| public PhysicalExec getRightChild() { |
| return rightChild; |
| } |
| |
| @Override |
| public void init() throws IOException { |
| leftChild.init(); |
| rightChild.init(); |
| progress = 0.0f; |
| |
| super.init(); |
| } |
| |
| @Override |
| public void rescan() throws IOException { |
| leftChild.rescan(); |
| rightChild.rescan(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| leftChild.close(); |
| rightChild.close(); |
| |
| getInputStats(); |
| |
| leftChild = null; |
| rightChild = null; |
| |
| progress = 1.0f; |
| } |
| |
| @Override |
| public float getProgress() { |
| if (leftChild == null) { |
| return progress; |
| } |
| return leftChild.getProgress() * 0.5f + rightChild.getProgress() * 0.5f; |
| } |
| |
| @Override |
| public TableStats getInputStats() { |
| if (leftChild == null) { |
| return inputStats; |
| } |
| TableStats leftInputStats = leftChild.getInputStats(); |
| inputStats.setNumBytes(0); |
| inputStats.setReadBytes(0); |
| inputStats.setNumRows(0); |
| |
| if (leftInputStats != null) { |
| inputStats.setNumBytes(leftInputStats.getNumBytes()); |
| inputStats.setReadBytes(leftInputStats.getReadBytes()); |
| inputStats.setNumRows(leftInputStats.getNumRows()); |
| } |
| |
| TableStats rightInputStats = rightChild.getInputStats(); |
| if (rightInputStats != null) { |
| inputStats.setNumBytes(inputStats.getNumBytes() + rightInputStats.getNumBytes()); |
| inputStats.setReadBytes(inputStats.getReadBytes() + rightInputStats.getReadBytes()); |
| inputStats.setNumRows(inputStats.getNumRows() + rightInputStats.getNumRows()); |
| } |
| |
| return inputStats; |
| } |
| } |