Has anyone had any success deploying UIMA components in the Google App
Engine? Right now, I am trying to package up some UIMAFit-based components
in a GAE servlet, but when I create my analysis engines, I get the
exception pasted below.
The trouble seems to come from this line in UimaContext.
uniqueIdentifier = new UID().toString();
Basically, I believe UIMA is using the java.rmi package as a convenient way
to generate UIDs. Meanwhile Google App Engine does not allow any access to
RMI classes.
Does anyone know any workarounds?
Thanks,
Lee
[INFO] java.lang.NoClassDefFoundError: java.rmi.server.UID is a restricted
class. Please see the Google App Engine developer's guide for more details.
[INFO] at
com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
[INFO] at
org.apache.uima.impl.UimaContext_ImplBase.<init>(UimaContext_ImplBase.java:129)
[INFO] at
org.apache.uima.impl.RootUimaContext_impl.<init>(RootUimaContext_impl.java:41)
[INFO] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
[INFO] at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
[INFO] at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[INFO] at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
[INFO] at
com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:127)
[INFO] at
com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:148)
[INFO] at
org.apache.uima.impl.UIMAFramework_impl._newUimaContext(UIMAFramework_impl.java:383)
[INFO] at
org.apache.uima.UIMAFramework.newUimaContext(UIMAFramework.java:1031)
[INFO] at
org.apache.uima.resource.Resource_ImplBase.initialize(Resource_ImplBase.java:107)
[INFO] at
org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.initialize(AnalysisEngineImplBase.java:157)
[INFO] at
org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.initialize(PrimitiveAnalysisEngine_impl.java:123)
[INFO] at
org.apache.uima.impl.AnalysisEngineFactory_impl.produceResource(AnalysisEngineFactory_impl.java:94)
[INFO] at
org.apache.uima.impl.CompositeResourceFactory_impl.produceResource(CompositeResourceFactory_impl.java:62)
[INFO] at
org.apache.uima.UIMAFramework.produceResource(UIMAFramework.java:269)
[INFO] at
org.apache.uima.UIMAFramework.produceAnalysisEngine(UIMAFramework.java:354)
[INFO] at
org.uimafit.factory.AnalysisEngineFactory.createPrimitive(AnalysisEngineFactory.java:392)
[INFO] at
com.hapara.analytics.nlp.PreprocessServlet.init(PreprocessServlet.java:52)
[INFO] at javax.servlet.GenericServlet.init(GenericServlet.java:212)
[INFO] at
org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440)
[INFO] at
org.mortbay.jetty.servlet.ServletHolder.getServlet(ServletHolder.java:339)
[INFO] at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
[INFO] at
com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
[INFO] at
com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
[INFO] at
com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
[INFO] at
com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:61)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
[INFO] at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
[INFO] at
com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
[INFO] at
com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
[INFO] at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
[INFO] at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
[INFO] at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
[INFO] at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
[INFO] at
org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
[INFO] at
com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94)
[INFO] at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
[INFO] at
com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:409)
[INFO] at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
[INFO] at org.mortbay.jetty.Server.handle(Server.java:326)
[INFO] at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
[INFO] at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
[INFO] at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
[INFO] at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
[INFO] at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
[INFO] at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
[INFO] at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
[INFO]
