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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 20549] New: - Handling of exceptions thrown during BeanUtils.populate
Date Fri, 06 Jun 2003 14:35:11 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=20549

Handling of exceptions thrown during BeanUtils.populate

           Summary: Handling of exceptions thrown during BeanUtils.populate
           Product: Commons
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Other
         Component: Bean Utilities
        AssignedTo: commons-dev@jakarta.apache.org
        ReportedBy: ericpabst@discoverfinancial.com
                CC: ericpabst@discoverfinancial.com


I run into a problem when using Struts to populate request parameters to a 
form's nested property when either the conversion from String to int (for 
example) fails or when the set method in the nested bean throws an exception 
such as IllegalArgumentException.  

I propose that we add a property to BeanUtilsBean for a new interface called 
something like PopulateExceptionHandler which will have a method something like
    void execute(Exception exception, Object bean, String propertyPath, Object 
value)

Then, within BeanUtilsBean.populate, within the loop, it would catch any 
exception, and call the populateExceptionHandler's execute method with it 
(unwrapping InvocationTargetException's).  The default handler would just 
rethrow it (or we could have no default handler, and if no handler is present, 
the BeanUtils method rethrows it).

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