| /* |
| * 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.calcite.rel.mutable; |
| |
| import org.apache.calcite.plan.RelOptCluster; |
| import org.apache.calcite.rel.type.RelDataType; |
| |
| import com.google.common.collect.ImmutableList; |
| |
| import java.util.List; |
| |
| /** Mutable equivalent of {@link org.apache.calcite.rel.BiRel}. */ |
| abstract class MutableBiRel extends MutableRel { |
| protected MutableRel left; |
| protected MutableRel right; |
| |
| protected MutableBiRel(MutableRelType type, RelOptCluster cluster, |
| RelDataType rowType, MutableRel left, MutableRel right) { |
| super(cluster, rowType, type); |
| this.left = left; |
| left.parent = this; |
| left.ordinalInParent = 0; |
| |
| this.right = right; |
| right.parent = this; |
| right.ordinalInParent = 1; |
| } |
| |
| public void setInput(int ordinalInParent, MutableRel input) { |
| if (ordinalInParent > 1) { |
| throw new IllegalArgumentException(); |
| } |
| if (ordinalInParent == 0) { |
| this.left = input; |
| } else { |
| this.right = input; |
| } |
| if (input != null) { |
| input.parent = this; |
| input.ordinalInParent = ordinalInParent; |
| } |
| } |
| |
| public List<MutableRel> getInputs() { |
| return ImmutableList.of(left, right); |
| } |
| |
| public MutableRel getLeft() { |
| return left; |
| } |
| |
| public MutableRel getRight() { |
| return right; |
| } |
| |
| public void childrenAccept(MutableRelVisitor visitor) { |
| |
| visitor.visit(left); |
| visitor.visit(right); |
| } |
| } |
| |
| // End MutableBiRel.java |