| /* |
| * 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.hyracks.algebricks.core.algebra.operators.logical.visitors; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.apache.commons.lang3.mutable.Mutable; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.algebricks.common.utils.Pair; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalPlan; |
| import org.apache.hyracks.algebricks.core.algebra.base.LogicalExpressionTag; |
| import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable; |
| import org.apache.hyracks.algebricks.core.algebra.expressions.VariableReferenceExpression; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AggregateOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AssignOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.DataSourceScanOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.DistinctOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.DistributeResultOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.EmptyTupleSourceOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.ExchangeOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.ExtensionOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.GroupByOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.IndexInsertDeleteUpsertOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.InnerJoinOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.InsertDeleteUpsertOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.IntersectOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.LeftOuterJoinOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.LeftOuterUnnestMapOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.LeftOuterUnnestOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.LimitOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.MaterializeOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.NestedTupleSourceOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.OrderOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.ProjectOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.RangeForwardOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.ReplicateOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.RunningAggregateOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.ScriptOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.SelectOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.SinkOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.SplitOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.SubplanOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.TokenizeOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.UnionAllOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.UnnestMapOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.UnnestOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.WriteOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.WriteResultOperator; |
| import org.apache.hyracks.algebricks.core.algebra.visitors.ILogicalOperatorVisitor; |
| |
| public class SchemaVariableVisitor implements ILogicalOperatorVisitor<Void, Void> { |
| |
| private Collection<LogicalVariable> schemaVariables; |
| |
| public SchemaVariableVisitor(Collection<LogicalVariable> schemaVariables) { |
| this.schemaVariables = schemaVariables; |
| } |
| |
| @Override |
| public Void visitAggregateOperator(AggregateOperator op, Void arg) throws AlgebricksException { |
| schemaVariables.addAll(op.getVariables()); |
| return null; |
| } |
| |
| @Override |
| public Void visitAssignOperator(AssignOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitDataScanOperator(DataSourceScanOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitDistinctOperator(DistinctOperator op, Void arg) throws AlgebricksException { |
| List<LogicalVariable> allLiveVars = new ArrayList<LogicalVariable>(); |
| for (Mutable<ILogicalOperator> c : op.getInputs()) { |
| VariableUtilities.getLiveVariables(c.getValue(), allLiveVars); |
| } |
| VariableUtilities.getProducedVariables(op, allLiveVars); |
| /** put distinct vars first */ |
| schemaVariables.addAll(op.getDistinctByVarList()); |
| /** then other live vars */ |
| for (LogicalVariable var : allLiveVars) { |
| if (!schemaVariables.contains(var)) { |
| schemaVariables.add(var); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public Void visitEmptyTupleSourceOperator(EmptyTupleSourceOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitExchangeOperator(ExchangeOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitGroupByOperator(GroupByOperator op, Void arg) throws AlgebricksException { |
| for (ILogicalPlan p : op.getNestedPlans()) { |
| for (Mutable<ILogicalOperator> r : p.getRoots()) { |
| VariableUtilities.getLiveVariables(r.getValue(), schemaVariables); |
| } |
| } |
| for (Pair<LogicalVariable, Mutable<ILogicalExpression>> p : op.getGroupByList()) { |
| if (p.first != null) { |
| schemaVariables.add(p.first); |
| } |
| } |
| for (Pair<LogicalVariable, Mutable<ILogicalExpression>> p : op.getDecorList()) { |
| if (p.first != null) { |
| schemaVariables.add(p.first); |
| } else { |
| ILogicalExpression e = p.second.getValue(); |
| if (e.getExpressionTag() == LogicalExpressionTag.VARIABLE) { |
| schemaVariables.add(((VariableReferenceExpression) e).getVariableReference()); |
| } |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public Void visitInnerJoinOperator(InnerJoinOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitLeftOuterJoinOperator(LeftOuterJoinOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitLimitOperator(LimitOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitNestedTupleSourceOperator(NestedTupleSourceOperator op, Void arg) throws AlgebricksException { |
| VariableUtilities.getLiveVariables(op.getSourceOperator(), schemaVariables); |
| return null; |
| } |
| |
| @Override |
| public Void visitOrderOperator(OrderOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitProjectOperator(ProjectOperator op, Void arg) throws AlgebricksException { |
| schemaVariables.addAll(op.getVariables()); |
| return null; |
| } |
| |
| @Override |
| public Void visitRunningAggregateOperator(RunningAggregateOperator op, Void arg) throws AlgebricksException { |
| // VariableUtilities.getProducedVariables(op, schemaVariables); |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitScriptOperator(ScriptOperator op, Void arg) throws AlgebricksException { |
| schemaVariables.addAll(op.getOutputVariables()); |
| return null; |
| } |
| |
| @Override |
| public Void visitSelectOperator(SelectOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitSubplanOperator(SubplanOperator op, Void arg) throws AlgebricksException { |
| for (Mutable<ILogicalOperator> c : op.getInputs()) { |
| VariableUtilities.getLiveVariables(c.getValue(), schemaVariables); |
| } |
| for (ILogicalPlan p : op.getNestedPlans()) { |
| for (Mutable<ILogicalOperator> r : p.getRoots()) { |
| VariableUtilities.getLiveVariables(r.getValue(), schemaVariables); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public Void visitUnionOperator(UnionAllOperator op, Void arg) throws AlgebricksException { |
| VariableUtilities.getProducedVariables(op, schemaVariables); |
| return null; |
| } |
| |
| @Override |
| public Void visitIntersectOperator(IntersectOperator op, Void arg) throws AlgebricksException { |
| VariableUtilities.getProducedVariables(op, schemaVariables); |
| return null; |
| } |
| |
| @Override |
| public Void visitUnnestMapOperator(UnnestMapOperator op, Void arg) throws AlgebricksException { |
| if (op.propagatesInput()) { |
| standardLayout(op); |
| } else { |
| VariableUtilities.getProducedVariables(op, schemaVariables); |
| } |
| return null; |
| } |
| |
| @Override |
| public Void visitLeftOuterUnnestMapOperator(LeftOuterUnnestMapOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitUnnestOperator(UnnestOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitWriteOperator(WriteOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitDistributeResultOperator(DistributeResultOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitWriteResultOperator(WriteResultOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| private void standardLayout(ILogicalOperator op) throws AlgebricksException { |
| for (Mutable<ILogicalOperator> c : op.getInputs()) { |
| VariableUtilities.getLiveVariables(c.getValue(), schemaVariables); |
| } |
| VariableUtilities.getProducedVariables(op, schemaVariables); |
| } |
| |
| @Override |
| public Void visitReplicateOperator(ReplicateOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitRangeForwardOperator(RangeForwardOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitSplitOperator(SplitOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitMaterializeOperator(MaterializeOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitInsertDeleteUpsertOperator(InsertDeleteUpsertOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitIndexInsertDeleteUpsertOperator(IndexInsertDeleteUpsertOperator op, Void arg) |
| throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitTokenizeOperator(TokenizeOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitSinkOperator(SinkOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitExtensionOperator(ExtensionOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| @Override |
| public Void visitLeftOuterUnnestOperator(LeftOuterUnnestOperator op, Void arg) throws AlgebricksException { |
| standardLayout(op); |
| return null; |
| } |
| |
| } |