Confusing exception when autobuilding a class fails due to class visibility
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Key: TAPESTRY-2096
URL: https://issues.apache.org/jira/browse/TAPESTRY-2096
Project: Tapestry
Issue Type: Bug
Components: tapestry-ioc
Affects Versions: 5.0.9
Reporter: Howard M. Lewis Ship
Priority: Minor
The exception that occurs when a constructor can't be invoked because the class
is not public is a bit confusing:
ERROR] olive-notes Tapestry 5 Application
/OliveNotes/blog/admin/createpost.postform;jsessionid=1szfzzqkr9bqo:
java.lang.RuntimeException: Error invoking service builder method
org.apache.tapestry.upload.services.UploadModule.buildMultipartDecoder(ThreadCleanupHub,
RegistryShutdownHub, ObjectLocator) (at UploadModule.java:47) (for service
'MultipartDecoder'): Error invoking constructor
org.apache.tapestry.upload.services.MultipartDecoderImpl(String, int, long,
long) (at MultipartDecoderImpl.java:61) (for service 'MultipartDecoder'): Class
org.apache.tapestry.ioc.internal.ConstructorServiceCreator can not access a
member of class org.apache.tapestry.upload.services.MultipartDecoderImpl with
modifiers "public"
at
org.apache.tapestry.ioc.internal.ServiceBuilderMethodInvoker.createObject(ServiceBuilderMethodInvoker.java:88)
at
org.apache.tapestry.ioc.internal.services.PerThreadServiceCreator.initialValue(PerThreadServiceCreator.java:47)
at java.lang.ThreadLocal$ThreadLocalMap.getAfterMiss(ThreadLocal.java:374)
at java.lang.ThreadLocal$ThreadLocalMap.get(ThreadLocal.java:347)
at java.lang.ThreadLocal$ThreadLocalMap.access$000(ThreadLocal.java:225)
at java.lang.ThreadLocal.get(ThreadLocal.java:127)
at
org.apache.tapestry.ioc.internal.services.PerThreadServiceCreator.createObject(PerThreadServiceCreator.java:53)
at
$MultipartDecoder_117bf563559._perThreadInstance($MultipartDecoder_117bf563559.java)
at $MultipartDecoder_117bf563559.decode($MultipartDecoder_117bf563559.java)
at $MultipartDecoder_117bf5634bb.decode($MultipartDecoder_117bf5634bb.java)
at
org.apache.tapestry.upload.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:40)
at
$HttpServletRequestHandler_117bf5634bd.service($HttpServletRequestHandler_117bf5634bd.java)
at
$HttpServletRequestHandler_117bf5634ba.service($HttpServletRequestHandler_117bf5634ba.java)
at org.apache.tapestry.TapestryFilter.doFilter(TapestryFilter.java:164)
at
org.mortbay.jetty.servlet.WebApplicationHandler$CachedChain.doFilter(WebApplicationHandler.java:821)
at
org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:471)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:568)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1530)
at
org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:633)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1482)
at org.mortbay.http.HttpServer.service(HttpServer.java:909)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:820)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:986)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:837)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:245)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:357)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
Caused by: java.lang.RuntimeException: Error invoking constructor
org.apache.tapestry.upload.services.MultipartDecoderImpl(String, int, long,
long) (at MultipartDecoderImpl.java:61) (for service 'MultipartDecoder'): Class
org.apache.tapestry.ioc.internal.ConstructorServiceCreator can not access a
member of class org.apache.tapestry.upload.services.MultipartDecoderImpl with
modifiers "public"
at
org.apache.tapestry.ioc.internal.ConstructorServiceCreator.createObject(ConstructorServiceCreator.java:62)
at
org.apache.tapestry.ioc.internal.ServiceResourcesImpl.autobuild(ServiceResourcesImpl.java:123)
at
org.apache.tapestry.upload.services.UploadModule.buildMultipartDecoder(UploadModule.java:47)
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:585)
at
org.apache.tapestry.ioc.internal.ServiceBuilderMethodInvoker.createObject(ServiceBuilderMethodInvoker.java:76)
... 26 more
Caused by: java.lang.IllegalAccessException: Class
org.apache.tapestry.ioc.internal.ConstructorServiceCreator can not access a
member of class org.apache.tapestry.upload.services.MultipartDecoderImpl with
modifiers "public"
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:65)
at java.lang.reflect.Constructor.newInstance(Constructor.java:486)
at
org.apache.tapestry.ioc.internal.ConstructorServiceCreator.createObject(ConstructorServiceCreator.java:51)
... 33 more
Tapestry should report this better, i.e., "you must make class
org.apache.tapestry.upload.services.MultipartDecoderImpl public".
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