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problem in Dynamic Proxy Mode

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Akhil Goyal
2008-10-24
2013-04-19

  • Akhil Goyal

    Akhil Goyal - 2008-10-24

    I am using hibernate4gwt to avoid serialization problems of hibernate
    generated sets and other collections .

    My code seems to work properly in hosted mode but when running on
    tomact i am getting the following exception when passing objects from
    server to client side

    I tried with latest version 1.1.1 also , but same error .

    These are the exceptions which i got

    SEVERE: Exception while dispatching incoming RPC call
    com.google.gwt.user.client.rpc.SerializationException: Type 'com.bashpole.vo.Venue_h4gwt15' was not included in the set of types which can be serialized by this SerializationPolicy or its Class object could not be loaded. For security purposes, this type will not be serialized.
        at com.google.gwt.user.server.rpc.impl.StandardSerializationPolicy.validateSerialize(StandardSerializationPolicy.java:83)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:581)
        at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:129)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter$VectorWriter$8.write(ServerSerializationStreamWriter.java:247)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeArray(ServerSerializationStreamWriter.java:603)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeImpl(ServerSerializationStreamWriter.java:651)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize(ServerSerializationStreamWriter.java:583)
        at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:129)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter$ValueWriter$8.write(ServerSerializationStreamWriter.java:146)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeValue(ServerSerializationStreamWriter.java:520)
        at com.google.gwt.user.server.rpc.RPCCopy_GWT15.encodeResponse(RPCCopy_GWT15.java:597)
        at com.google.gwt.user.server.rpc.RPCCopy_GWT15.encodeResponseForSuccess(RPCCopy_GWT15.java:429)
        at com.google.gwt.user.server.rpc.RPCCopy.encodeResponseForSuccess(RPCCopy.java:156)
        at net.sf.hibernate4gwt.gwt.HibernateRemoteService.processCall(HibernateRemoteService.java:174)
        at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
        at org.apache.coyote.http11.Http11BaseProtocol$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)

    Also in hosted mode i sometimes get the following exceptions

    SEVERE: Exception while dispatching incoming RPC call
    net.sf.hibernate4gwt.exception.ProxyException: Proxy generation failure for com.bashpole.vo.Address
        at net.sf.hibernate4gwt.rebind.JavassistProxyGenerator.generateProxyFor(JavassistProxyGenerator.java:97)
        at net.sf.hibernate4gwt.rebind.ProxyManager.generateProxyClass(ProxyManager.java:114)
        at net.sf.hibernate4gwt.rebind.ProxyClassLoader.loadClass(ProxyClassLoader.java:197)
        at java.lang.ClassLoader.loadClassInternal(Unknown Source)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Unknown Source)
        at com.google.gwt.user.server.rpc.SerializationPolicyLoader.loadFromStream(SerializationPolicyLoader.java:129)
        at com.google.gwt.user.server.rpc.RemoteServiceServlet.doGetSerializationPolicy(RemoteServiceServlet.java:232)
        at com.google.gwt.user.server.rpc.RemoteServiceServlet.getSerializationPolicy(RemoteServiceServlet.java:117)
        at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.prepareToRead(ServerSerializationStreamReader.java:400)
        at com.google.gwt.user.server.rpc.RPCCopy_GWT15.decodeRequest(RPCCopy_GWT15.java:222)
        at com.google.gwt.user.server.rpc.RPCCopy.decodeRequest(RPCCopy.java:114)
        at net.sf.hibernate4gwt.gwt.HibernateRemoteService.processCall(HibernateRemoteService.java:160)
        at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
        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)
    Caused by: javassist.CannotCompileException: by java.lang.LinkageError: loader (instance of  org/apache/catalina/loader/WebappClassLoader): attempted  duplicate class definition for name: "com/bashpole/vo/Address_h4gwt15"
        at javassist.ClassPool.toClass(ClassPool.java:1035)
        at javassist.ClassPool.toClass(ClassPool.java:978)
        at javassist.CtClass.toClass(CtClass.java:1109)
        at net.sf.hibernate4gwt.rebind.JavassistProxyGenerator.generateProxyFor(JavassistProxyGenerator.java:93)
        ... 29 more
    Caused by: java.lang.LinkageError: loader (instance of  org/apache/catalina/loader/WebappClassLoader): attempted  duplicate class definition for name: "com/bashpole/vo/Address_h4gwt15"
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        at java.lang.ClassLoader.defineClass(Unknown Source)
        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 javassist.ClassPool.toClass2(ClassPool.java:1047)
        at javassist.ClassPool.toClass(ClassPool.java:1029)
        ... 32 more

    But it doesnt seem to affect the functionality

    Thanks
    Akhil Goyal

    Tarams Software Technologies

     

    • Nebojsa

      Nebojsa - 2009-06-26

      I am also getting the problem you described at the top of your post (not the second one). Has anyone found a solution to this?

       

      • Bruno Marchesson

        Bruno Marchesson - 2009-06-26

        Hi,

        I suggest you to upgrade to Gilead (the new name of Hibernate4GWT library). We are now at release 1.2.3, so many bugs have been fixed since 1.1.1

        Regards
        Bruno

         

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