/*
* 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.executor.wrapper;
import com.dangdang.ddframe.rdb.sharding.executor.event.DMLExecutionEvent;
import com.dangdang.ddframe.rdb.sharding.executor.event.DQLExecutionEvent;
import com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit;
import com.google.common.base.Optional;
import lombok.Getter;
import lombok.RequiredArgsConstructor;
/**
* 执行上下文基类.
*
* @author zhangliang
*/
@RequiredArgsConstructor
@Getter
public abstract class AbstractExecutorWrapper {
private final SQLExecutionUnit sqlExecutionUnit;
/**
* 判断SQL是否为DML语句.
*
* @return 是否为DML语句
*/
final boolean isDML() {
String sql = sqlExecutionUnit.getSql();
return sql.toLowerCase().startsWith("insert") || sql.toLowerCase().startsWith("update") || sql.toLowerCase().startsWith("delete");
}
/**
* 判断SQL是否为DQL语句.
*
* @return 是否为DQL语句
*/
final boolean isDQL() {
return sqlExecutionUnit.getSql().toLowerCase().startsWith("select");
}
/**
* 获取DML类SQL执行时事件.
*
* @return DML类SQL执行时事件
*/
public abstract Optional<DMLExecutionEvent> getDMLExecutionEvent();
/**
* 获取DML类SQL执行时事件.
*
* @return DQL类SQL执行时事件
*/
public abstract Optional<DQLExecutionEvent> getDQLExecutionEvent();
}