Transfer exception causes

Status: implemented, Mon Oct 9 13:12:51 CEST 2006

Created: 2006-09-22 13:57:14+0200
Categories: remote
Author: friebe

Scope of Change

An exception's cause will be transferred via EASC to the client.

Rationale

The remote.InvocationException's stacktrace is not really helpful in finding what may have caused a serverside exception.

Functionality

PHP side

The remote.ExceptionReference will extend util.ChainedException instead of lang.Exception

Java side

Exception serialization will be changed to include a "cause" member including the serialized representation of the exception's cause. Note: This may be NULL.

Example #1

A complete stacktrace - without the patch, only the InvocationException's stracktrace will be shown. One wouldn't be able to see that this originated from a org.apache.lucene.queryParser.ParseException...

Exception remote.InvocationException ()
  at php.sun.reflect.GeneratedMethodAccessor4::invoke() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] 
  at php.net.xp_framework.easc.server.CallDelegate::invoke() [line 25 of CallDelegate.java] 
  at php.net.xp_framework.easc.protocol.standard.ServerHandler::handle() [line 73 of ServerHandler.java] 
  at php.net.xp_framework.easc.server.HandlerThread::run() [line 50 of HandlerThread.java] 
Caused by Exception remote.ExceptionReference<java.lang.reflect.UndeclaredThrowableException> ()
  at php.$Proxy5::search() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.GeneratedMethodAccessor4::invoke() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] 
  at php.net.xp_framework.easc.server.CallDelegate::invoke() [line 25 of CallDelegate.java] 
  at php.net.xp_framework.easc.protocol.standard.ServerHandler::handle() [line 73 of ServerHandler.java] 
  at php.net.xp_framework.easc.server.HandlerThread::run() [line 50 of HandlerThread.java] 
Caused by Exception remote.InvocationException ()
  at php.sun.reflect.GeneratedMethodAccessor5::invoke() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] 
  at php.de.schlund.easc.standalone.EASCInvocationHandler::invoke() [line 31 of EASCInvocationHandler.java] 
  at php.$Proxy5::search() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.GeneratedMethodAccessor4::invoke() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] 
  at php.net.xp_framework.easc.server.CallDelegate::invoke() [line 25 of CallDelegate.java] 
  at php.net.xp_framework.easc.protocol.standard.ServerHandler::handle() [line 73 of ServerHandler.java] 
  at php.net.xp_framework.easc.server.HandlerThread::run() [line 50 of HandlerThread.java] 
Caused by Exception remote.ExceptionReference<org.apache.lucene.queryParser.ParseException> (Lexical error at line 1, column 1.  Encountered: "*" (42), after : "")
  at php.org.apache.lucene.queryParser.QueryParser::parse() [line 125 of QueryParser.java] 
  at php.de.schlund.easc.standalone.LuceneSearchHandler::search() [line 67 of LuceneSearchHandler.java] 
  at php.sun.reflect.GeneratedMethodAccessor5::invoke() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] 
  at php.de.schlund.easc.standalone.EASCInvocationHandler::invoke() [line 31 of EASCInvocationHandler.java] 
  at php.$Proxy5::search() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.GeneratedMethodAccessor4::invoke() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] 
  at php.net.xp_framework.easc.server.CallDelegate::invoke() [line 25 of CallDelegate.java] 
  at php.net.xp_framework.easc.protocol.standard.ServerHandler::handle() [line 73 of ServerHandler.java] 
  at php.net.xp_framework.easc.server.HandlerThread::run() [line 50 of HandlerThread.java]

Example #2

Without patch:

Exception remote.InvocationException ()
  at php.sun.reflect.NativeMethodAccessorImpl::invoke0() [line -2 of NativeMethodAccessorImpl.java] 
  at php.sun.reflect.NativeMethodAccessorImpl::invoke() [line 39 of NativeMethodAccessorImpl.java] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] 
  at php.net.xp_framework.easc.server.CallDelegate::invoke() [line 25 of CallDelegate.java] 
  at php.net.xp_framework.easc.protocol.standard.ServerHandler::handle() [line 73 of ServerHandler.java] 
  at php.net.xp_framework.easc.server.HandlerThread::run() [line 54 of HandlerThread.java]

With patch:

Exception remote.InvocationException ()
  at php.sun.reflect.NativeMethodAccessorImpl::invoke0() [line -2 of NativeMethodAccessorImpl.java] 
  at php.sun.reflect.NativeMethodAccessorImpl::invoke() [line 39 of NativeMethodAccessorImpl.java] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] 
  at php.net.xp_framework.easc.server.CallDelegate::invoke() [line 25 of CallDelegate.java] 
  at php.net.xp_framework.easc.protocol.standard.ServerHandler::handle() [line 73 of ServerHandler.java] 
  at php.net.xp_framework.easc.server.HandlerThread::run() [line 54 of HandlerThread.java] 
Caused by Exception remote.ExceptionReference<java.rmi.ServerException> (EJBException:; nested exception is: 
        javax.ejb.EJBException: Store failed; CausedByException is:
        Syntax error or access violation message from server: "UPDATE command denied to user 'jboss'@'p4723e3d4.np.schlund.de' for table 'feed'")
  at php.org.jboss.ejb.plugins.LogInterceptor::handleException() [line 352 of LogInterceptor.java] 
  at php.org.jboss.ejb.plugins.LogInterceptor::invoke() [line 196 of LogInterceptor.java] 
  at php.org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor::invoke() [line 122 of ProxyFactoryFinderInterceptor.java] 
  at php.org.jboss.ejb.EntityContainer::internalInvoke() [line 514 of EntityContainer.java] 
  at php.org.jboss.ejb.Container::invoke() [line 873 of Container.java] 
  at php.sun.reflect.GeneratedMethodAccessor78::invoke() [line -1 of StackTraceElement.class.php] 
  at php.sun.reflect.DelegatingMethodAccessorImpl::invoke() [line 25 of DelegatingMethodAccessorImpl.java] 
  at php.java.lang.reflect.Method::invoke() [line 585 of Method.java] thekid@banane:~/devel/xp.public/trunk/ext/java/easc/clients >

It is now clear what has caused the problem (a missing update-permission).

Security considerations

n/a

Speed impact

Slower.

Dependencies

n/a

Comments

n/a

<EOF>

Rationale
Functionality
Security considerations
Speed impact
Dependencies
Related documents
Comments