org.apache.drill.exec.planner.sql.DrillCalciteSqlWrapper Maven / Gradle / Ivy

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/*
 * 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();
}