/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.rdb.sharding.parser.visitor;
import com.dangdang.ddframe.rdb.sharding.constants.DatabaseType;
import com.dangdang.ddframe.rdb.sharding.parser.result.router.SQLBuilder;
/**
* SQL解析基础访问器接口.
*
* @author zhangliang
*/
public interface SQLVisitor {
/**
* 获取数据库类型.
*
* @return 数据库类型
*/
DatabaseType getDatabaseType();
/**
* 获取解析上下文对象.
*
* @return 解析上下文对象
*/
ParseContext getParseContext();
/**
* 获取SQL构建器.
*
* @return SQL构建器
*/
SQLBuilder getSQLBuilder();
/**
* 打印替换标记.
*
* @param token 替换标记
*/
void printToken(String token);
/**
* 打印替换标记.
*
* @param label 标签
* @param token 替换标记
*/
void printToken(String label, String token);
}