| // 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.impala.analysis; |
| |
| import java.util.List; |
| |
| import org.apache.impala.planner.PlanNode; |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.Lists; |
| |
| /** |
| * Dummy table ref that is used in plan generation for adding a SingularRowSrcNode |
| * inside a SubplanNode's plan tree (second child). |
| */ |
| public class SingularRowSrcTableRef extends TableRef { |
| private final List<TupleId> tblRefIds_; |
| private final List<TupleId> tupleIds_; |
| |
| public SingularRowSrcTableRef(PlanNode subplanInput) { |
| super(null, "singular-row-src-tblref"); |
| Preconditions.checkNotNull(subplanInput); |
| Preconditions.checkState(sampleParams_ == null); |
| desc_ = null; |
| isAnalyzed_ = true; |
| tblRefIds_ = Lists.newArrayList(subplanInput.getTblRefIds()); |
| tupleIds_ = Lists.newArrayList(subplanInput.getTupleIds()); |
| } |
| |
| /** |
| * This override is needed to support join inversion where the original lhs |
| * is a SingularRowSrcTableRef. |
| */ |
| @Override |
| public void setLeftTblRef(TableRef leftTblRef) { |
| super.setLeftTblRef(leftTblRef); |
| tblRefIds_.clear(); |
| tupleIds_.clear(); |
| tblRefIds_.addAll(leftTblRef_.getAllTableRefIds()); |
| tupleIds_.addAll(leftTblRef_.getAllMaterializedTupleIds()); |
| } |
| |
| @Override |
| public TupleId getId() { return tblRefIds_.get(tblRefIds_.size() - 1); } |
| |
| @Override |
| public List<TupleId> getAllTableRefIds() { return tblRefIds_; } |
| |
| @Override |
| public List<TupleId> getAllMaterializedTupleIds() { return tupleIds_; } |
| } |