/* * Licensed 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 com.facebook.presto.sql.tree; import java.util.Optional; public abstract class Relation extends Node { protected Relation(Optional<NodeLocation> location) { super(location); } @Override public <R, C> R accept(AstVisitor<R, C> visitor, C context) { return visitor.visitRelation(this, context); } }