"Double cannot be cast to Long" - demarshalling issue?
Hi,
I have a bit strange issue and looks like wrong type conversion.
UsersIdsDTO.java
@ExposeEntity
public class UsersIdsDTO implements Serializable {
private static final long serialVersionUID = -5751561497655220118L;
private List<Long> ids;
public UsersIdsDTO( List<Long> ids ) {
this.ids = ids;
}
public UsersIdsDTO( ) {
}
public List<Long> getIds( ) {
return ids;
}
public void setIds( List<Long> ids ) {
this.ids = ids;
}
}
Server-side piece of code sending the message
UsersIdsDTO deletedUsersIdsDTO = ...
MessageBuilder.createMessage( ).toSubject( "deletedUsersNotification" ).with( "deletedUsersIdsDTO", deletedUsersIdsDTO )
.noErrorHandling( ).sendGlobalWith( dispatcher );
Message receiver on Client side
ErraiBus.get( ).subscribe( "deletedUsersNotification", new MessageCallback( ) {
@Override
public void callback( Message message ) {
UsersIdsDTO deletedUsersIdsDTO = message.get( UsersIdsDTO.class, "deletedUsersIdsDTO" );
List<Long> deletedUsersIds = deletedUsersIdsDTO.getIds( );
Long l = deletedUsersIds.get( 0 ); // the list contains elements
...
}
});
The red line above causes the error:
receiver 'deletedUsersNotification' threw an exception
Additional details:
| deletedUsersIdsDTO | com.company.proj.shared.service.rpc.dto.UsersIdsDTO@103f732 |
| ToSubject | deletedUsersNotification |
java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.Long
com.company.proj.client.activity.UsersActivity$2.callback(UsersActivity.java:128)
org.jboss.errai.bus.client.framework.ClientMessageBusImpl$3.callback(ClientMessageBusImpl.java:239)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:289)
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107)
org.jboss.errai.bus.client.framework.ClientMessageBusImpl._store(ClientMessageBusImpl.java)
org.jboss.errai.bus.client.framework.ClientMessageBusImpl.procIncomingPayload(ClientMessageBusImpl.java:1211)
org.jboss.errai.bus.client.framework.ClientMessageBusImpl.access$7(ClientMessageBusImpl.java:1208)
org.jboss.errai.bus.client.framework.ClientMessageBusImpl$5.onResponseReceived(ClientMessageBusImpl.java:534)
com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287)
com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:395)
sun.reflect.GeneratedMethodAccessor166.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
com.google.gwt.core.client.impl.Impl.apply(Impl.java)
com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
sun.reflect.GeneratedMethodAccessor165.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
java.lang.Thread.run(Thread.java:722)
What's wrong and how to solve it?
