Monosij Dutta-Roy wrote:
I am resubmitting my post as my configuration with returning the
collection - an ArrayList I continue to get the Pass-By-Value error. I
am using Beta-2.
I changed the return datatype between the components back to an
arraylist - and I get the same error again. Attached.
Pass-By-Value not supported for ArrayList.
Based on my email yesterday - I have it as I had set it out in the email.
As I had mentioned - I have 3 contributions:
----------
qmAppSCA01 (QueryServlet ref: QueryServce; QueryService ref;
qmController/QueryOrchestrator)
qmController (QueryOrchestraor ref: QueryComposor, QueryExecutor;
QueryExecutor ref: Person)
domainBCA (Person, PhysicalLocation)
----------
1. QueryServet calls QueryService calls QueryOrchestror (passes HashMap)
2. QueryOrchestrator calls QueryComposer gets parsed Query as string
3. QueryOrchestrator calls QueryExecutor with Query string, executes
query and returns ArrayList of Patients.
4. QueryOrchestrator sends ArrayList of patients back to QueryService.
5. QueryService returns it to QueryServlet which then displays it.
----------
I am attaching my composite files as well.
Unsure where its going wrong.
Right now just returning an ArrayList - from the reference object each
of which is in the chain.
I wonder if I am making some basic fundamental errors.
Thanks for your help.
monosij
From the stack trace, the problem is that you are passing a PatientImpl
object as part of the ArrayList, and PatientImpl is not serializable.
From looking at your composites, PatientImpl is the implementation class
for the PatientComponent component, which provides a Person service.
If this service is intended to represent a single patient (Joe, Mary, Bill,
etc.), you should be using a POJO for this instead of a service.
If you change PatientImpl from a service to a POJO and make it serializable,
you should be able to return it within an ArrayList.
The same would apply to AddressImpl if this is intended to represent the
address of a single patient.
Simon
------------------------------------------------------------------------
HTTP ERROR 500
Problem accessing /qmAppSCA01/QueryServlet. Reason:
Pass-by-value is not supported for the given object: java.util.ArrayList
Caused by:
java.lang.IllegalArgumentException: Pass-by-value is not supported for the
given object: java.util.ArrayList
at
org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding.copy(JavaBeansDataBinding.java:132)
at
org.apache.tuscany.sca.databinding.DefaultDataBindingExtensionPoint$LazyDataBinding.copy(DefaultDataBindingExtensionPoint.java:169)
at
org.apache.tuscany.sca.databinding.impl.MediatorImpl.copy(MediatorImpl.java:542)
at
org.apache.tuscany.sca.databinding.impl.MediatorImpl.copyOutput(MediatorImpl.java:615)
at
org.apache.tuscany.sca.binding.sca.provider.SCABindingInvoker.processResponse(SCABindingInvoker.java:120)
at
org.apache.tuscany.sca.core.invocation.InterceptorAsyncImpl.invoke(InterceptorAsyncImpl.java:59)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:322)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:278)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:125)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.doInvokeSync(AsyncJDKInvocationHandler.java:239)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.invoke(AsyncJDKInvocationHandler.java:161)
at $Proxy34.getPatients(Unknown Source)
at
org.rd.qm.impl.QueryOrchestratorImpl.getPatients(QueryOrchestratorImpl.java:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:164)
at
org.apache.tuscany.sca.binding.sca.provider.SCABindingLocalInvocationInterceptor.invoke(SCABindingLocalInvocationInterceptor.java:49)
at
org.apache.tuscany.sca.core.invocation.InterceptorAsyncImpl.invoke(InterceptorAsyncImpl.java:58)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:322)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:278)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:125)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.doInvokeSync(AsyncJDKInvocationHandler.java:239)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.invoke(AsyncJDKInvocationHandler.java:161)
at $Proxy33.getPatients(Unknown Source)
at org.rd.qm.impl.QueryServiceImpl.getPatients(QueryServiceImpl.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:164)
at
org.apache.tuscany.sca.binding.sca.provider.SCABindingLocalInvocationInterceptor.invoke(SCABindingLocalInvocationInterceptor.java:49)
at
org.apache.tuscany.sca.core.invocation.InterceptorAsyncImpl.invoke(InterceptorAsyncImpl.java:58)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:322)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:278)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:125)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.doInvokeSync(AsyncJDKInvocationHandler.java:239)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.invoke(AsyncJDKInvocationHandler.java:161)
at $Proxy32.getPatients(Unknown Source)
at org.rd.qm.servlet.QueryServlet.service(QueryServlet.java:127)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.io.NotSerializableException:
com.bca.pearl.domain.impl.PatientImpl
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1180)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at java.util.ArrayList.writeObject(ArrayList.java:673)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:962)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at
org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding.copy(JavaBeansDataBinding.java:79)
... 58 more
Caused by:
java.io.NotSerializableException: com.bca.pearl.domain.impl.PatientImpl
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1180)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at java.util.ArrayList.writeObject(ArrayList.java:673)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:962)
at
java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1480)
at
java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1416)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:346)
at
org.apache.tuscany.sca.databinding.javabeans.JavaBeansDataBinding.copy(JavaBeansDataBinding.java:79)
at
org.apache.tuscany.sca.databinding.DefaultDataBindingExtensionPoint$LazyDataBinding.copy(DefaultDataBindingExtensionPoint.java:169)
at
org.apache.tuscany.sca.databinding.impl.MediatorImpl.copy(MediatorImpl.java:542)
at
org.apache.tuscany.sca.databinding.impl.MediatorImpl.copyOutput(MediatorImpl.java:615)
at
org.apache.tuscany.sca.binding.sca.provider.SCABindingInvoker.processResponse(SCABindingInvoker.java:120)
at
org.apache.tuscany.sca.core.invocation.InterceptorAsyncImpl.invoke(InterceptorAsyncImpl.java:59)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:322)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:278)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:125)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.doInvokeSync(AsyncJDKInvocationHandler.java:239)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.invoke(AsyncJDKInvocationHandler.java:161)
at $Proxy34.getPatients(Unknown Source)
at
org.rd.qm.impl.QueryOrchestratorImpl.getPatients(QueryOrchestratorImpl.java:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:164)
at
org.apache.tuscany.sca.binding.sca.provider.SCABindingLocalInvocationInterceptor.invoke(SCABindingLocalInvocationInterceptor.java:49)
at
org.apache.tuscany.sca.core.invocation.InterceptorAsyncImpl.invoke(InterceptorAsyncImpl.java:58)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:322)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:278)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:125)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.doInvokeSync(AsyncJDKInvocationHandler.java:239)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.invoke(AsyncJDKInvocationHandler.java:161)
at $Proxy33.getPatients(Unknown Source)
at org.rd.qm.impl.QueryServiceImpl.getPatients(QueryServiceImpl.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at
org.apache.tuscany.sca.implementation.java.invocation.JavaImplementationInvoker.invoke(JavaImplementationInvoker.java:164)
at
org.apache.tuscany.sca.binding.sca.provider.SCABindingLocalInvocationInterceptor.invoke(SCABindingLocalInvocationInterceptor.java:49)
at
org.apache.tuscany.sca.core.invocation.InterceptorAsyncImpl.invoke(InterceptorAsyncImpl.java:58)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:322)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:278)
at
org.apache.tuscany.sca.core.invocation.impl.JDKInvocationHandler.invoke(JDKInvocationHandler.java:125)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.doInvokeSync(AsyncJDKInvocationHandler.java:239)
at
org.apache.tuscany.sca.core.invocation.impl.AsyncJDKInvocationHandler.invoke(AsyncJDKInvocationHandler.java:161)
at $Proxy32.getPatients(Unknown Source)
at org.rd.qm.servlet.QueryServlet.service(QueryServlet.java:127)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:401)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
at
org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at
org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at
org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
------------------------------------------------------------------------
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