Can you provide the full stacktrace for the exception? On Wed, Aug 26, 2009 at 2:58 PM, Albert Attard <[email protected]>wrote:
> Hey Toby: > Did as you instructed and worked. Thanks a lot Toby. Let me know should you > need anything. I'm glad to help. > > > Another question about Janino: I'm getting the following exception on the > live app-engine when the dynamic code (the code that is compiled by janino) > has a compilation error: > > An error occurred: java.security.AccessControlException: access denied > (java.lang.RuntimePermissions accessDeclaredMembers) > > > On the local environment, janino returns the line number where the error > occurred, which is very helpful for the students. > > Cheers, > Albert Attard > > Samuel > Goldwyn<http://www.brainyquote.com/quotes/authors/s/samuel_goldwyn.html> - > "I'm willing to admit that I may not always be right, but I am never > wrong." > > 2009/8/26 Toby Reyelts <[email protected]> > > >> Hey Albert, >> >> Even though I haven't actually seen the changes that you made, I believe >> they were unnecessary. (Go out on a limb with me here). I tracked the fault >> down to an error in our runtime that can be worked around by just >> recompiling the code. You should be able to confirm this on your end by >> recompiling Janino from source *without* any of the changes you made. >> Please make sure you've set the target version to 1.5 or 1.6. >> >> On Wed, Aug 26, 2009 at 4:51 AM, Albert Attard <[email protected]>wrote: >> >>> Hey Toby: >>> Janino api include classes that are not supported by the app-engine. All >>> I did is commented out the code that the app-engine didn't like in janino >>> and repackaged it. >>> >>> I did the following: >>> >>> - Downloaded the source for janino: >>> http://www.janino.net/download/janino-2.5.15.zip >>> - I've created a new Google Web Project in Eclipse >>> - I've copied the source into the Google Web Project >>> - Than I've *unsafely* commented out code that was not supported by >>> the Google app-engine >>> - Repackaged the edited code into a new jar and deployed it with my >>> project instead of the original one >>> - The simple proof of concept seams to work >>> >>> As you can see at the simple demo: http://ask-me.appspot.com/ the code >>> seams to work. Hope you manage to complete this question :) >>> >>> Cheers, >>> Albert Attard >>> >>> Stephen >>> Leacock<http://www.brainyquote.com/quotes/authors/s/stephen_leacock.html> - >>> "I detest life-insurance agents: they always argue that I shall some day >>> die, which is not so." >>> >>> 2009/8/25 Toby Reyelts <[email protected]> >>> >>> Hey Albert, >>>> >>>> That code should actually work ok, but you've managed to tickle a bug in >>>> our runtime. I've filed an >>>> issue<http://code.google.com/p/googleappengine/issues/detail?id=2028>for >>>> you here. The fix for this probably won't make the next release, but it >>>> should come shortly thereafter. >>>> >>>> >>>> On Tue, Aug 25, 2009 at 6:33 AM, Albert Attard >>>> <[email protected]>wrote: >>>> >>>>> Hi Toby: >>>>> Thanks for you feedback. >>>>> >>>>> I've did a small prototype: http://ask-me.appspot.com/ . It's working >>>>> fine locally, but it's throwing the following exception when executed on >>>>> the >>>>> app-engine: >>>>> >>>>> javax.servlet.ServletContext log: Exception while dispatching incoming >>>>> RPC call >>>>> com.google.gwt.user.server.rpc.UnexpectedException: Service method >>>>> 'public abstract com.albertattard.askme.client.utils.AssessmentTO >>>>> com.albertattard.askme.client.AssessorService.assessCode(java.lang.String)' >>>>> threw an unexpected exception: java.lang.VerifyError: (class: >>>>> org/codehaus/janino/ByteArrayClassLoader, method: findClass signature: >>>>> (Ljava/lang/String;)Ljava/lang/Class;) Illegal type in constant pool >>>>> at >>>>> com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:360) >>>>> at >>>>> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:546) >>>>> at >>>>> com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:166) >>>>> at >>>>> com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86) >>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:713) >>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) >>>>> at >>>>> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) >>>>> at >>>>> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093) >>>>> at >>>>> com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35) >>>>> at >>>>> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) >>>>> at >>>>> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43) >>>>> at >>>>> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084) >>>>> at >>>>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360) >>>>> at >>>>> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) >>>>> at >>>>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) >>>>> at >>>>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:712) >>>>> at >>>>> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) >>>>> at >>>>> com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:237) >>>>> at >>>>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) >>>>> at org.mortbay.jetty.Server.handle(Server.java:313) >>>>> at >>>>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:506) >>>>> at >>>>> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:830) >>>>> at >>>>> com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76) >>>>> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381) >>>>> at >>>>> com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:139) >>>>> at >>>>> com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:235) >>>>> at >>>>> com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:4823) >>>>> at >>>>> com.google.apphosting.base.RuntimePb$EvaluationRuntime$6.handleBlockingRequest(RuntimePb.java:4821) >>>>> at >>>>> com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:24) >>>>> at >>>>> com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:359) >>>>> at com.google.net.rpc.impl.Server$2.run(Server.java:820) >>>>> at >>>>> com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:56) >>>>> at >>>>> com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:516) >>>>> at com.google.net.rpc.impl.Server.startRpc(Server.java:775) >>>>> at com.google.net.rpc.impl.Server.processRequest(Server.java:348) >>>>> at >>>>> com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:436) >>>>> at >>>>> com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:319) >>>>> at >>>>> com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:290) >>>>> at >>>>> com.google.net.async.Connection.handleReadEvent(Connection.java:428) >>>>> at >>>>> com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:762) >>>>> at >>>>> com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:207) >>>>> at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:101) >>>>> at >>>>> com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:251) >>>>> at >>>>> com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run(JavaRuntime.java:374) >>>>> at java.lang.Thread.run(Unknown Source) >>>>> Caused by: java.lang.VerifyError: (class: >>>>> org/codehaus/janino/ByteArrayClassLoader, method: findClass signature: >>>>> (Ljava/lang/String;)Ljava/lang/Class;) Illegal type in constant pool >>>>> at >>>>> org.codehaus.janino.SimpleCompiler.compileToClassLoader(SimpleCompiler.java) >>>>> at org.codehaus.janino.SimpleCompiler.cook(SimpleCompiler.java) >>>>> at org.codehaus.janino.Cookable.cook(Cookable.java) >>>>> at org.codehaus.janino.Cookable.cook(Cookable.java) >>>>> at org.codehaus.janino.Cookable.cook(Cookable.java) >>>>> at >>>>> com.albertattard.askme.server.DemoSwapAssessor.assess(DemoSwapAssessor.java:21) >>>>> at >>>>> com.albertattard.askme.server.AssessorServiceImpl.assessCode(AssessorServiceImpl.java:15) >>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>>>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) >>>>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) >>>>> at java.lang.reflect.Method.invoke(Unknown Source) >>>>> at >>>>> com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_$3.run(Method_.java:149) >>>>> at java.security.AccessController.doPrivileged(Native Method) >>>>> at >>>>> com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.privilegedInvoke(Method_.java:147) >>>>> at >>>>> com.google.apphosting.runtime.security.shared.intercept.java.lang.reflect.Method_.invoke(Method_.java:120) >>>>> at >>>>> com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:527) >>>>> ... 43 more >>>>> >>>>> >>>>> The janino ByteArrayClassLoader is not working well (not accepted) on >>>>> the app-engine :( >>>>> >>>>> Any other options? >>>>> >>>>> Cheers, >>>>> Albert Attard >>>>> >>>>> Marie von >>>>> Ebner-Eschenbach<http://www.brainyquote.com/quotes/authors/m/marie_von_ebnereschenbac.html> >>>>> - "Even a stopped clock is right twice a day." >>>>> >>>>> 2009/8/14 Toby Reyelts <[email protected]> >>>>> >>>>> >>>>>> We don't have any near term plans to whitelist javax.tools. Do you >>>>>> think something like janino <http://www.janino.net/> might work for >>>>>> you? >>>>>> >>>>>> >>>>>> On Fri, Aug 14, 2009 at 2:50 AM, Albert Attard < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Hi everyone: >>>>>>> >>>>>>> Background about the problem: >>>>>>> I'm a Java lecturer and would like to create an automated question >>>>>>> web application similar to a multiple choice questions and answers but >>>>>>> where >>>>>>> the students can practice coding instead of simply selecting an answer. >>>>>>> >>>>>>> Multiple choice questions are very popular in web exams as these >>>>>>> are fully automated. You do the test and the system corrects it for you >>>>>>> and >>>>>>> gives you the results there and then. I would like to go one step >>>>>>> further >>>>>>> and have the student to supply a code fragment or even a class(es) and >>>>>>> have >>>>>>> the system automatically correcting it in a similar fashion to the >>>>>>> multiple >>>>>>> choice questions. >>>>>>> >>>>>>> Example (in a nutshell): >>>>>>> The student is asked to write a method: that given an array of int >>>>>>> and two indices of type int (between 0 and the size of the array - 1), >>>>>>> this >>>>>>> method will swap the elements at the given indices. The student >>>>>>> will write the method in the provided text area and submit it. Then >>>>>>> the system will include this method into a class, compile it and by >>>>>>> using reflection executes it with an array of values (similar to JUnit) >>>>>>> to >>>>>>> ensure that it is working as expected. During this process the system >>>>>>> will >>>>>>> be awarding the student marks and will display the final result together >>>>>>> with comments as required. >>>>>>> >>>>>>> Google Appengine >>>>>>> I have a prototype and it works great on Tomcat. Yes I know that it >>>>>>> is subject to Java code injection but that's not an issue at this >>>>>>> stage. This issue can be fixed at a later stage. Unfortunately I cannot >>>>>>> implement it on the Google Appengine as most of the >>>>>>> required functionality, such as writing to a file or JavaCompiler is >>>>>>> disabled . I've managed to compile the classes to database (without >>>>>>> writing >>>>>>> to the file system) and load classes from database (without reading >>>>>>> from the >>>>>>> file system), which can integrate well with the provided datastore. >>>>>>> Is there a way (or a procedure) of implementing such a system on >>>>>>> the Google Appengine? This application will be a free education tool >>>>>>> for everyone who would like to use it. >>>>>>> >>>>>>> Thanks in advance, >>>>>>> Albert Attard >>>>>>> >>>>>>> Ted Turner<http://www.brainyquote.com/quotes/authors/t/ted_turner.html> >>>>>>> - "Sports is like a war without the killing." >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>> >>> >>> >> >> >> > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~----------~----~----~----~------~----~------~--~---
