Path com Injeção de Variáveis: por que com tipo "long" não funciona?

GUJ Ranger Membro desde: 04/07/2007 18:28:58 Mensagens: 975 Offline

Olá,

resolvi voltar ao meu passatempo de criar uma aplicação do tipo "Blog em 15 minutos" com VRaptor 3. Existe um método no meu controller que é assim:

Pois bem, se eu utilizar como tipo primitivo "long", surge a seguinte exceção:

java.lang.ClassFormatError: Arguments can't fit into locals in class file PostController$show$920210699$1
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:637)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:482)
	at br.com.caelum.vraptor.http.asm.AsmBasedTypeCreator$1.loadClass(AsmBasedTypeCreator.java:120)
	at br.com.caelum.vraptor.http.asm.AsmBasedTypeCreator.typeFor(AsmBasedTypeCreator.java:126)
	at br.com.caelum.vraptor.reflection.CacheBasedTypeCreator.typeFor(CacheBasedTypeCreator.java:66)
	at br.com.caelum.vraptor.http.ognl.OgnlParametersProvider.createViaOgnl(OgnlParametersProvider.java:134)
	at br.com.caelum.vraptor.http.ognl.OgnlParametersProvider.createRoot(OgnlParametersProvider.java:128)
	at br.com.caelum.vraptor.http.ognl.OgnlParametersProvider.getParametersFor(OgnlParametersProvider.java:104)
	at br.com.caelum.vraptor.interceptor.ParametersInstantiatorInterceptor.intercept(ParametersInstantiatorInterceptor.java:81)
	at br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:57)
	at br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:71)
	at br.com.caelum.vraptor.interceptor.InstantiateInterceptor.intercept(InstantiateInterceptor.java:54)
	at br.com.caelum.vraptor.core.InstantiatedInterceptorHandler.execute(InstantiatedInterceptorHandler.java:51)
	at br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:71)
	at br.com.caelum.vraptor.interceptor.multipart.MultipartInterceptor.intercept(MultipartInterceptor.java:58)
	at br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:57)
	at br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:71)
	at br.com.caelum.vraptor.interceptor.InterceptorListPriorToExecutionExtractor.intercept(InterceptorListPriorToExecutionExtractor.java:58)
	at br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:57)
	at br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:71)
	at br.com.caelum.vraptor.core.URLParameterExtractorInterceptor.intercept(URLParameterExtractorInterceptor.java:45)
	at br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:57)
	at br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:71)
	at br.com.caelum.vraptor.interceptor.ResourceLookupInterceptor.intercept(ResourceLookupInterceptor.java:70)
	at br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler.execute(ToInstantiateInterceptorHandler.java:57)
	at br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:71)
	at br.com.caelum.vraptor.core.DefaultRequestExecution.execute(DefaultRequestExecution.java:71)
	at br.com.caelum.vraptor.VRaptor$1.insideRequest(VRaptor.java:99)
	at br.com.caelum.vraptor.ioc.spring.SpringProvider.provideForRequest(SpringProvider.java:33)
	at br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:97)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:215)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:291)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:188)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:641)
	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:97)
	at com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:85)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:185)
	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:339)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:237)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:209)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:753)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:661)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:914)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:166)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
	at com.sun.grizzly.util.FixedThreadPool$BasicWorker.dowork(FixedThreadPool.java:379)
	at com.sun.grizzly.util.FixedThreadPool$BasicWorker.run(FixedThreadPool.java:360)
	at java.lang.Thread.run(Thread.java:636)

O mais estranho: se eu trocar para a classe wrapper Long, funciona normal; para o tipo primitivo int, também; para String, também; e para Integer, também. Apenas quando é utilizado o tipo primitivo long que dá erro.

Isso não seria um bug? Eu, particularmente, prefiro sempre usar tipos primitivos pra evitar problemas.

GUJ Hacker Membro desde: 08/07/2007 00:08:14 Mensagens: 6394 Offline

Olá,

sim, isso parece um bug, vamos verificar...

Só cuidado qdo usar tipo primitivo, que ele fica convertendo pro wrapper toda hora:
entitymanager.find(...) recebe um object, logo vai converter o long para Long...
na hora de concatenar com string ele tb converte, pra poder chamar o toString...

prefira o Long qdo vc for fazer operações de objeto,
prefira o long qdo vc for fazer operações matemáticas...

[]'s

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