001/* 002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.ecm.core.query.sql.model; 023 024import java.io.Serializable; 025 026/** 027 * The base of all query nodes. 028 * <p> 029 * An AST method accepts a visitor and that's all. 030 * 031 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 032 */ 033public interface ASTNode extends Serializable { 034 035 /** 036 * Accept the given visitor. 037 * 038 * @param visitor the AST node visitor 039 */ 040 void accept(IVisitor visitor); 041 042}