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From "Kazimierz Pogoda (JIRA)" <...@excalibur.apache.org>
Subject [jira] Created: (FORTRESS-14) FortressServiceSelector throws NullPointerException
Date Thu, 27 Jan 2005 09:04:19 GMT
FortressServiceSelector throws NullPointerException
---------------------------------------------------

         Key: FORTRESS-14
         URL: http://issues.apache.org/jira/browse/FORTRESS-14
     Project: Excalibur Fortress
        Type: Bug
  Components: Runtime  
 Environment: avalon-fortress-container-1.1.jar
    Reporter: Kazimierz Pogoda
    Priority: Minor


The select(Object) method of FortressServiceSelector throws NullPointerException if the specified
hint object is null.

It looks like the orginal intent of this code was, to throw the ServiceException in such case.
The private getHandler(Object) method throws IllegalArgumentException if the hint is null.
Then it is cauth as general Exception, in the select(Object) method to throw specific ServiceException,
but before that, in concatenation of name string, hint.toString() method is called and hint
is null.

What is the rationale of explicitly called hint.toString() method in such situation? In described
case avoiding toString() would prevent from this NullPointerException bug.

Here is my stack trace:
java.lang.NullPointerException
at org.apache.avalon.fortress.impl.lookup.FortressServiceSelector.select(FortressServiceSelector.java:82)
at pl.ncdc.avalon.service.DefaultExtendedServiceSelector.select(DefaultExtendedServiceSelector.java:68)
at pl.ncdc.pcm.service.DefaultActionExecutor.execute(DefaultActionExecutor.java:331)
at pl.ncdc.pcm.service.DefaultActionExecutor.access$700(DefaultActionExecutor.java:50)
at pl.ncdc.pcm.service.DefaultActionExecutor$Worker.run(DefaultActionExecutor.java:299)


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