Setting the COERCE_TO_ZERO to false in 6.0.18 did the trick for me. Initially I only tested this on 6.0.16.

Thanks Chuck.
On 20 Oct 2008, at 00:12, Alexander Hartner wrote:

Hi Chuck,

Thanks for coming back to me to quickly. I have tried this, but this only seems to work for numbers. I am looking at Strings.

So far I have tested this with Sun's JSF 1.2_04-b20-p03 as well as 1.2_09-b02-FCS and myfaces-core-1.2.4.

MyFaces gave me some other errors, but now behaves in exactly the same way at Sun implementation, converting any nulls returned by the converter into an empty string.

I am hoping that there is a simple solution for this as I surely can't be the first one to pick this up.

Thanks for all your support.
Alex


On 19 Oct 2008, at 23:41, Caldarale, Charles R wrote:

From: Alexander Hartner [mailto:[EMAIL PROTECTED]
Subject: Re: Using Convert to handle NULL values for empty Strings ""

The problem indeed does not appear in 6.0.14, however both
6.0.16 and 18 are affected by it.

I wonder what has changed, and how I can fix this

This might be related:
https://issues.apache.org/bugzilla/show_bug.cgi?id=43285

Try playing with the associated COERCE_TO_ZERO system property to see if it has an effect:
http://tomcat.apache.org/tomcat-6.0-doc/config/systemprops.html#Expression%20Language

- Chuck


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