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Java Model

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package com.litongjava.model.db;

import java.sql.SQLException;

/**
 * IAtom support transaction of database.
 * It can be invoked in Db.tx(IAtom atom) method.
 * 

 * Example:

 * Db.tx(new IAtom(){

 * 		public boolean run() throws SQLException {

 * 			int result1 = Db.update("update account set cash = cash - ? where id = ?", 100, 123);

 * 			int result2 = Db.update("update account set cash = cash + ? where id = ?", 100, 456);

 * 			return result1 == 1 && result2 == 1;

 * 		}});
 */
@FunctionalInterface
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;
}