I've been using Clojure 1.2 and appengine-clj for a project on AppEngine and two days ago it stopped working after the Google team released some newly refactored code to production. Short discussion of this problem on the AppEngine-Java discussion group is here:
http://code.google.com/appengine/forum/java-forum.html?place=topic%2Fgoogle-appengine-java%2FSzrdYDTwkYk%2Fdiscussion I'm trying to figure out what I can patch (either in appengine-clj or Clojure) to get up and running again. In short, it looks like Google moved a method into an abstract superclass and now Clojure throws this error whenever I try to access a datastore transaction: java.lang.IllegalArgumentException: Can't call public method of non- public class: public com.google.appengine.api.datastore.Transaction com.google.appengine.api.datastore.BaseDatastoreService.getCurrentTransaction(com.google.appengine.api.datastore.Transaction) at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:85) at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28) Questions: 1. Is there any sort of type hinting or other trick I could add to appengine-clj to avoid this problem? 2. Is this related to these two bugs in Assembla?: http://www.assembla.com/spaces/clojure/tickets/259-clojure-lang-reflector-invokematchingmethod-is-not-complete-(rejects-pontentially-valid-method-in--- http://www.assembla.com/spaces/clojure/tickets/126-abstract-superclass-with-non-public-accessibility (AppEngine runs on Java 6, BTW) Full stacktrace: java.lang.IllegalArgumentException: Can't call public method of non- public class: public com.google.appengine.api.datastore.Transaction com.google.appengine.api.datastore.BaseDatastoreService.getCurrentTransaction(com.google.appengine.api.datastore.Transaction) at clojure.lang.Reflector.invokeMatchingMethod(Reflector.java:85) at clojure.lang.Reflector.invokeInstanceMethod(Reflector.java:28) at appengine.datastore.service$current_transaction.invoke(service.clj: 72) at appengine.datastore.service$put_entity.invoke(service.clj:131) at appengine.datastore.service$fn__176.invoke(service.clj:149) at appengine.datastore.service$fn__136$G__116__141.invoke(service.clj: 10) at com.redaranj.ledes.service.servlet $fn__1902$fn__1903.invoke(servlet.clj:17) at compojure.core$routes$fn__1706$fn__1707.invoke(core.clj:72) at clojure.core$some.invokeStatic(core.clj:2297) at compojure.core$routes$fn__1706.invoke(core.clj:71) at ring.middleware.params$wrap_params$fn__1468.invoke(params.clj:77) at ring.middleware.cookies$wrap_cookies$fn__1559.invoke(cookies.clj: 123) at ring.util.servlet$make_service_method$fn__1881.invoke(servlet.clj: 117) at com.redaranj.ledes.service.servlet$_service.invoke(servlet.clj:19) at com.redaranj.ledes.service.servlet.service(Unknown Source) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: 511) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1166) at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java: 97) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java: 35) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: 43) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 388) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: 216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: 182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: 765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: 418) at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java: 238) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: 152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: 542) at org.mortbay.jetty.HttpConnection $RequestHandler.headerComplete(HttpConnection.java:923) at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java: 76) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java: 135) at com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java: 261) at com.google.apphosting.base.RuntimePb$EvaluationRuntime $6.handleBlockingRequest(RuntimePb.java:8483) at com.google.apphosting.base.RuntimePb$EvaluationRuntime $6.handleBlockingRequest(RuntimePb.java:8481) at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java: 24) at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java: 418) at com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java: 572) at com.google.tracing.TraceContext$TraceContextRunnable $1.run(TraceContext.java:448) at com.google.tracing.TraceContext.runInContext(TraceContext.java: 688) at com.google.tracing.TraceContext $AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java: 326) at com.google.tracing.TraceContext $AbstractTraceContextCallback.runInInheritedContext(TraceContext.java: 318) at com.google.tracing.TraceContext $TraceContextRunnable.run(TraceContext.java:446) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java: 1110) at java.util.concurrent.ThreadPoolExecutor $Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) -- You received this message because you are subscribed to the Google Groups "Clojure" group. 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