| /* |
| * 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.plan; |
| |
| import com.google.common.collect.ImmutableList; |
| |
| import java.util.List; |
| |
| /** |
| * Children of a {@link org.apache.calcite.plan.RelOptRuleOperand} and the |
| * policy for matching them. |
| * |
| * <p>Often created by calling one of the following methods: |
| * {@link RelOptRule#some}, |
| * {@link RelOptRule#none}, |
| * {@link RelOptRule#any}, |
| * {@link RelOptRule#unordered}. |
| * |
| * @deprecated Use {@link RelRule.OperandBuilder} |
| */ |
| @Deprecated // to be removed before 2.0 |
| public class RelOptRuleOperandChildren { |
| static final RelOptRuleOperandChildren ANY_CHILDREN = |
| new RelOptRuleOperandChildren( |
| RelOptRuleOperandChildPolicy.ANY, |
| ImmutableList.of()); |
| |
| static final RelOptRuleOperandChildren LEAF_CHILDREN = |
| new RelOptRuleOperandChildren( |
| RelOptRuleOperandChildPolicy.LEAF, |
| ImmutableList.of()); |
| |
| final RelOptRuleOperandChildPolicy policy; |
| final ImmutableList<RelOptRuleOperand> operands; |
| |
| public RelOptRuleOperandChildren( |
| RelOptRuleOperandChildPolicy policy, |
| List<RelOptRuleOperand> operands) { |
| this.policy = policy; |
| this.operands = ImmutableList.copyOf(operands); |
| } |
| } |