速度非常快、轻量级的引擎，使用富有表达能力的Petri网定义工作流，不要求关系数据库，使用简单，能和Java应用集成。事实上，它是按嵌入式设计的-Bossa is a workflow engine written in Java. The engine is very fast and lightweight, uses a very expressive Petri net notation to define workflows, does not require a RDBMS and

bossa引擎是一款开源的轻量级的工作流引擎，他是基于petri net的，不需要后台数据库系统的支持，他通过叫prevaler的系统来维护自身的持久化，所谓prevaler系统是基于sun的Serializable接口的。-bossa engine is a lightweight open source workflow engine, based on the support of petri NET, and does not require back-end database syst