| /* |
| * 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.drill.exec.planner.sql; |
| |
| import org.apache.calcite.sql.SqlOperator; |
| /** |
| * This interface is meant for the users of the wrappers, {@link DrillCalciteSqlOperatorWrapper}, |
| * {@link DrillCalciteSqlFunctionWrapper} and {@link DrillCalciteSqlAggFunctionWrapper}, to access the wrapped Calcite |
| * {@link SqlOperator} without knowing exactly which wrapper it is. |
| */ |
| public interface DrillCalciteSqlWrapper { |
| /** |
| * Get the wrapped {@link SqlOperator} |
| * |
| * @return SqlOperator get the wrapped {@link SqlOperator} |
| */ |
| SqlOperator getOperator(); |
| } |