Thank you for your response, i just think it is useful, and i have finished a demo, if i have chance to finish it, it it a dulcet thing
2010-04-03 ustbcoder 发件人： Rahul Akolkar 发送时间： 2010-04-03 13:31:22 收件人： Commons Developers List 抄送： 主题： Re: [SCXML] A multi-thread supported service and custom actionmanagement system for Apache Commons SCXML engine 2010/4/1 ustbcoder <ustbco...@gmail.com>: > Hi all, > > In my daily work, i have develop a demo of "A multi-thread supported service > and custom action management system for Apache Commons SCXML engine". Now, i > want to continue this project, may be i can hold it as a GSoC project under > Commons SCXML, i post my idea here to hear your voice and suggestions. Here > is my idea, any advise ? please let me know :-) > <snip/> Some of these ideas would be useful utilities (for example, pooling SCXML executors has been discussed more than once). This proposal seems to have an assortment of ideas. Your other proposal feels stronger in terms of one coherent theme for a GSoC project. -Rahul > -----------------------------------------My idea start > below---------------------------------------------------- > Title:A multi-thread supported service and custom action management system > for Apache Commons SCXML engine > > Abstract: > > Apache Commons SCXML is an implementation aimed at creating and maintaining a > Java SCXML engine capable of executing a state machine defined using a SCXML > document which is very useful to handler complex status transfer logic.This > project aims to implement a multi-thread supported service and custom action > management system for Commons SCXML. > > Description: > > State Chart XML (SCXML) provides a generic state-machine based execution > environment based on Harel State Tables and is very useful to handler complex > status transfer logic.Apache Commons SCXML is an implementation aimed at > creating and maintaining a Java SCXML engine capable of executing a state > machine defined using a SCXML document. It is just a single thread SCXML > engine,if user want to implement a whole SCXML based application, he must do > some secondary development jobs. > This project aims to develop a open source multi-thread SCXML services > management system. It includes these main function module,and this is also > what i need to do: > > 1.Custom actions management module > All the system custom actions are registered in a configuration xml named > system_custom_actions.xml. > Each custom action Java Class must implement interface > org.apache.commons.scxml.model.Action, and write practical code in function > execute(final EventDispatcher evtDispatcher, final ErrorReporter errRep, > final SCInstance scInstance, final Log appLog, final Collection derivedEvents) > When system initializate, load all the custom actions Class from > system_custom_actions.xml,instance them and add them into system context > environment.User can use this mechanism to add his own custom actions to the > system > Create a Java Swing based Graphics User Interface to add,modify,delete custom > actions into the system. > > 2.Thread pool management module > Use a thread pool mechanism to manage SCXML engines. The thread pool > properties information is stored in a XML confiuration file named > system_thread_pool.xml,it includes these attributes: > min_thead_number,max_thread_number,thread_release_timespan may be some more > When system initializate, it will instance several SCXML engines objects > according to min_thread_number. If these thread are all busy, but one new > service is start,system will start a new thread to handle this service. The > thead number can not outstrip max_thread_number. If a thread has been free > for a period of time which is marked by attribute > thread_release_timespan,system will release this thread. > > 3.Service management module > Every application service is a SCXML document,all the system services are > registered in a configuration xml file named system_service.xml, each service > has a unique id which is used to mark the service. > > 4.Service manage and monitor module > Build a Java Swing GUI to check service list,start,stop,deploy or delete some > services.And also, it has a sub system to monitor running service status,look > over data in running context,reset this service or kill it. > 5.Event dispatch module > Implement a EventDispather class instance to send Event to the system. Each > Event will contain a service id which is used to mark its owner service and > specific event content. > > This is a whole SCXML deploy and management system. If user want to implement > some SCXML based application, just write proper SCXML document and > corresponding custom actions,register them in to the system,and start the > service,it is done. > I think it is a practical SCXML engine,it will make Apache Commons SCXML more > and more popular,In fact, i have finish some function module, such as custom > action management module > . > -------------------------------------------My idea > end--------------------------------------------------------------- > > That is all, thank you > > Xunlong Gui > 2010-04-01 > > > > ustbcoder > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org .
