[Repast-interest] multiton of a Repast model

[wzhgao <wz...@ya...>]

Hi,

I've already build a repast model behind (using groovy), and use the method
here
http://old.nabble.com/How-to-programmatically-start-RepastS---td14351077.html#a14351077
to start the model programmatically. When I published the model as a server
in Tomcat, that I put all the classes in webapp's folder with the libs. When
there is only one session to call the model, it runs OK. But when I try to
start a new session, the errors come:

java.lang.RuntimeException: simplegamemodel.SimplePlayer class is frozen
	at javassist.CtClassType.checkModify(CtClassType.java:286)
	at javassist.CtBehavior.getMethodInfo(CtBehavior.java:98)
	at
repast.simphony.engine.watcher.WatcheeInstrumentor.addFieldFromWatchers(WatcheeInstrumentor.java:168)
	at
repast.simphony.engine.watcher.WatcheeInstrumentor.instrument(WatcheeInstrumentor.java:102)
	at repast.simphony.scenario.ScenarioLoader.load(ScenarioLoader.java:147)
	at defaultTest.TestRunner.load(TestRunner.java:72)
	at com.decisci.RepastModelService.<init>(RepastModelService.java:37)
	at com.decisci.RepastModelServlet.doPost(RepastModelServlet.java:34)
	at com.decisci.RepastModelServlet.doGet(RepastModelServlet.java:23)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
	at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
	at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
	at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
	at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
	at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
	at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
	at java.lang.Thread.run(Unknown Source)


---------
It seems the "frozen" class is used by the previous session. 

what is WatcheeInstrumentor for? How can begin a new instance of model( it
should be the same model, so the path of 'rs' folder should be the same)?

best regards,

Weizhi
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