| /* |
| * 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.asterix.optimizer.rules; |
| |
| import org.apache.asterix.algebra.operators.CommitOperator; |
| import org.apache.commons.lang3.mutable.Mutable; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator; |
| import org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext; |
| import org.apache.hyracks.algebricks.core.algebra.base.LogicalOperatorTag; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AssignOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.DelegateOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.ProjectOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.physical.AssignPOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.physical.StreamProjectPOperator; |
| import org.apache.hyracks.algebricks.core.rewriter.base.IAlgebraicRewriteRule; |
| |
| /** |
| * This rule will search for project and assign operators in an insert/delete/update plan and |
| * pass a hint to all of them. This hint is used by the project and assign operators so that frames are pushed to |
| * the next operator without waiting until they get full. The purpose of this is to |
| * reduce the time of holding exclusive locks on the keys that have been inserted. Also to allow feeds batching |
| * to work correctly. |
| * |
| * @author salsubaiee |
| */ |
| public class IntroduceRapidFrameFlushProjectAssignRule implements IAlgebraicRewriteRule { |
| |
| @Override |
| public boolean rewritePre(Mutable<ILogicalOperator> opRef, IOptimizationContext context) |
| throws AlgebricksException { |
| return false; |
| } |
| |
| private boolean checkIfRuleIsApplicable(AbstractLogicalOperator op) { |
| if (op.getOperatorTag() != LogicalOperatorTag.DELEGATE_OPERATOR) { |
| return false; |
| } |
| DelegateOperator extensionOp = (DelegateOperator) op; |
| if (!(extensionOp.getDelegate() instanceof CommitOperator)) { |
| return false; |
| } |
| |
| for (int i = 0; i < op.getInputs().size(); ++i) { |
| AbstractLogicalOperator descendantOp = (AbstractLogicalOperator) op.getInputs().get(i).getValue(); |
| |
| if (descendantOp.getOperatorTag() == LogicalOperatorTag.PROJECT |
| || descendantOp.getOperatorTag() == LogicalOperatorTag.ASSIGN) { |
| if (descendantOp.getPhysicalOperator() == null) { |
| return false; |
| } |
| } |
| checkIfRuleIsApplicable(descendantOp); |
| } |
| return true; |
| } |
| |
| private boolean changeRule(AbstractLogicalOperator op) { |
| boolean planModified = false; |
| for (int i = 0; i < op.getInputs().size(); ++i) { |
| AbstractLogicalOperator descendantOp = (AbstractLogicalOperator) op.getInputs().get(i).getValue(); |
| |
| if (descendantOp.getOperatorTag() == LogicalOperatorTag.PROJECT) { |
| ProjectOperator projectOp = (ProjectOperator) descendantOp; |
| StreamProjectPOperator physicalOp = (StreamProjectPOperator) projectOp.getPhysicalOperator(); |
| physicalOp.setRapidFrameFlush(true); |
| planModified = true; |
| } else if (descendantOp.getOperatorTag() == LogicalOperatorTag.ASSIGN) { |
| AssignOperator assignOp = (AssignOperator) descendantOp; |
| AssignPOperator physicalOp = (AssignPOperator) assignOp.getPhysicalOperator(); |
| physicalOp.setRapidFrameFlush(true); |
| planModified = true; |
| } |
| changeRule(descendantOp); |
| } |
| return planModified; |
| } |
| |
| @Override |
| public boolean rewritePost(Mutable<ILogicalOperator> opRef, IOptimizationContext context) |
| throws AlgebricksException { |
| |
| AbstractLogicalOperator op = (AbstractLogicalOperator) opRef.getValue(); |
| if (!checkIfRuleIsApplicable(op)) { |
| return false; |
| } |
| return changeRule(op); |
| } |
| } |