Drools Expert 是 Drools 平台上的一个规则引擎，主要的功能包括有：
Full Asymmetrical Rete Implementation -- with high performance indexing
Sequential Rete
Truth maintenance with logical assertions.
Dynamic KnowledgeBases (add/remove rules at runtime)
Stateful and Stateless Execution Modes
Knowledge Agent
Rule inheritence (RHS)
Rule meta-data
Type declarations
High performance session marshalling
JPA persistence and transactions
CommandExecution, with innovative result handling, with built in XML Marshalling for Command remoting.
Pipeline data automation with handling for JMS, JAXB, Smooks, XStream, Jxls (Excel).
项目主页：http://www.jboss.org/drools/drools-expert.html
下载地址：http://www.jboss.org/drools/downloads
来自:开源中国社区
