/**
* Copyright (c) 2011-2012, James Zhan 詹波 (jfinal@126.com).
*
* 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.jfinal.plugin.activerecord;
import java.sql.SQLException;
/**
* IAtom support transaction of database.
* It can be invoked in Db.tx(IAtom atom) method.
* <br>
* Example:<br>
* Db.tx(new IAtom(){<br>
* public boolean run() throws SQLException {<br>
* int result1 = Db.update("update account set cash = cash - ? where id = ?", 100, 123);<br>
* int result2 = Db.update("update account set cash = cash + ? where id = ?", 100, 456);<br>
* return result1 == 1 && result2 == 1;<br>
* }});
*/
public interface IAtom {
/**
* Place codes here that need transaction support.
* @return true if you want to commit the transaction otherwise roll back transaction
*/
boolean run() throws SQLException;
}