Question

我想把问题放在代码中：

RPCRequest request = ClientFactory.getRPCRequest();
VenueProxy venue = request
      .create(VenueProxy.class);

venue = request.edit(venue);
venue.setId(121);//Trouble Maker line of code... comment it will make things go smooth
venue.setVersion(0);//helper line otherwise get the exception version is null

request.readVenueById(121).fire(new Reciever<VenueProxy>(){

    public void onSuccess(VenueProxy venue){
         ....
         ....
    }
 }

现在，我在这里所做的就是触发读取查询请求。当我触发请求时，没有对新创建和可编辑的代理Venue的引用，但是这将给我这个异常堆栈跟踪：

java.lang.IllegalStateException: The AutoBean has been frozen
at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.checkFrozen(AbstractAutoBean.java:195)
at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.setProperty(AbstractAutoBean.java:270)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:289)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107)
at com.google.web.bindery.autobean.gwt.client.impl.ClientPropertyContext$Setter$.call$(ClientPropertyContext.java)
at com.google.web.bindery.autobean.gwt.client.impl.ClientPropertyContext.set(ClientPropertyContext.java:137)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$3.visitValueProperty(AbstractRequestContext.java:910)
at com.xxxxxxxxxx.shared.VenueProxyAutoBean_com_google_web_bindery_requestfactory_shared_impl_EntityProxyCategory_com_google_web_bindery_requestfactory_shared_impl_ValueProxyCategory_com_google_web_bindery_requestfactory_shared_impl_BaseProxyCategory.traverseProperties(EtmVenueMasterProxyAutoBean_com_google_web_bindery_requestfactory_shared_impl_EntityProxyCategory_com_google_web_bindery_requestfactory_shared_impl_ValueProxyCategory_com_google_web_bindery_requestfactory_shared_impl_BaseProxyCategory.java:356)
at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.traverse(AbstractAutoBean.java:166)
at com.google.web.bindery.autobean.shared.impl.AbstractAutoBean.accept(AbstractAutoBean.java:101)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.processReturnOperation(AbstractRequestContext.java:879)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.processReturnOperations(AbstractRequestContext.java:1215)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.access$7(AbstractRequestContext.java:1185)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$StandardPayloadDialect.processPayload(AbstractRequestContext.java:347)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$5.onTransportSuccess(AbstractRequestContext.java:1108)
at com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport$1.onResponseReceived(DefaultRequestTransport.java:136)
at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287)
at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:395)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
at sun.reflect.GeneratedMethodAccessor179.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
at java.lang.Thread.run(Thread.java:662)

我对RequestFactory的这种行为感到好奇。

Answer 1

创建后不要调用编辑。创建用于创建新对象，因为我假设你在这里做。

编辑用于编辑现有对象...

Answer 2

你正在点击https://code.google.com/p/google-web-toolkit/issues/detail?id=7341（我不确定其实是一个错误）

在服务器端，你将拥有两个具有相同ID的对象，即表示同一个实体，RequestFactory不能很好地处理它（它应该抛出服务器，而不是让客户端在解码时失败）回应）。

Answer 3

请求会跟踪它处理的对象，这就是它只能在edit()和fire()方法之间发送已更改数据的方式。

在同一个请求中已经有一个具有相同ID的bean可以暂停问题。为什么不直接为readVenueById()电话创建新请求？

仅在拍摄读取查询时，[Auto bean frozen]编辑（可变）代理的RequestFactory异常

3 个答案: