Dear Community,
I have a problem with my application which uses JPA on Datanucleus and
RequestFactory,
It has 3 JPA Entiries:
(User) -> (Address) -> (City)
@Entity
@Table(name = "T_USER_1")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Basic
private String firstName;
@Basic
private String lastName;
@Basic
private Address primaryAddress;
....
}
@Entity
@Table(name = "T_ADDRESS_1")
public class Address {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Extension(vendorName = "datanucleus", key = "gae.encoded-pk", value =
"true")
// This is a Datanucleus requirement (Child must have id of type Key or
a String but with this annotation)
private String id;
@Basic
private String street;
@Basic
private City city;
...
}
@Entity
@Table(name = "T_CITY_1")
public class City {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Extension(vendorName = "datanucleus", key = "gae.encoded-pk", value =
"true")
private String id;
@Basic
private String cityName;
...
}
It has all Proxies: (UserProxy, AddressProxy, CityProxy) and the
RequestContexts: (UserRequest, AddressRequest, CityRequest)
My client code looks like this:
UserRequest userRequest = mySampleRequestFactory.userRequest();
// ====== Step1: Create the JPA entities using the Proxy interfaces
======//
UserProxy newUser = userRequest.create(UserProxy.class);
AddressProxy firstAddress = userRequest.create(AddressProxy.class);
CityProxy city = userRequest.create(CityProxy.class);
newUser.setFirstName(firstNameTextBox.getText());
newUser.setLastName(lastNameTextBox.getText());
firstAddress.setStreet(primaryAddressTextBox.getText());
city.setCityName(cityTextBox.getText());
firstAddress.setCity(city);
newUser.setPrimaryAddress(firstAddress);
// ====== Step2: Call Request Factory ======//
userRequest.persist().using(newUser).fire(new Receiver<UserProxy>()
{
@Override
public void onSuccess(UserProxy employee) {
System.out.println("========== SUCESS =========");
}
@Override
public void onFailure(ServerFailure error) {
System.out.println("======== ERROR ==========");
error.getStackTraceString();
error.getMessage();
error.getClass();
}
});
====================================================================
EVERYTHING WORKED FINE AS LONG AS I DO NOT HAVE CITY WITHIN THE ADDRESS. (2
Level Inheritance)
As soon as I use the City within the Address Entity (as shown in the
example above), the application creates an Error:
====================================================================
Feb 08, 2013 5:53:41 PM
com.google.web.bindery.requestfactory.server.ServiceLayerDecorator die
SEVERE: No type for token ZnIs$bNWPGt9pOa3oCZkGeCvZCM=
Feb 08, 2013 5:53:41 PM
com.google.web.bindery.requestfactory.server.RequestFactoryServlet doPost
SEVERE: Unexpected error
com.google.web.bindery.requestfactory.server.UnexpectedException: No type
for token ZnIs$bNWPGt9pOa3oCZkGeCvZCM=
at
com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.die(ServiceLayerDecorator.java:216)
at
com.google.web.bindery.requestfactory.server.ResolverServiceLayer.resolveClass(ResolverServiceLayer.java:59)
at
com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveClass(ServiceLayerDecorator.java:136)
at
com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveClass(ServiceLayerDecorator.java:136)
at
com.google.web.bindery.requestfactory.server.ServiceLayerDecorator.resolveClass(ServiceLayerDecorator.java:136)
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.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115)
at
com.google.web.bindery.requestfactory.server.ServiceLayerCache.getOrCache(ServiceLayerCache.java:233)
at
com.google.web.bindery.requestfactory.server.ServiceLayerCache.resolveClass(ServiceLayerCache.java:156)
at
com.google.web.bindery.requestfactory.server.RequestState$1.getTypeFromToken(RequestState.java:76)
at
com.google.web.bindery.requestfactory.shared.impl.IdFactory.getId(IdFactory.java:159)
at
com.google.web.bindery.requestfactory.server.RequestState.getBeansForPayload(RequestState.java:142)
at
com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.processOperationMessages(SimpleRequestProcessor.java:509)
at
com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:218)
at
com.google.web.bindery.requestfactory.server.SimpleRequestProcessor.process(SimpleRequestProcessor.java:135)
at
com.google.web.bindery.requestfactory.server.RequestFactoryServlet.doPost(RequestFactoryServlet.java:133)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at
com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:61)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
at
org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at
org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at
org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at
org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at
org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at
com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94)
at
org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at
com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:383)
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$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at
org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at
org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Can you please help me to solve this problem or simply show me an example
where 3 and more Level inheritance is used by the Request Factory.
THANK YOU IN ADVANCE!!
Nermin
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