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From "Andreas Andreou (JIRA)" <...@tapestry.apache.org>
Subject [jira] Resolved: (TAPESTRY-1774) Why do an unbounded parameter throw an exception when calling a setter over it?
Date Sun, 09 Mar 2008 08:23:46 GMT

     [ https://issues.apache.org/jira/browse/TAPESTRY-1774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Andreas Andreou resolved TAPESTRY-1774.

    Resolution: Won't Fix

This makes sense for me... so that component authors are informed of the
problem and handle it themselves. 

> Why do an unbounded parameter throw an exception when calling a setter over it?
> -------------------------------------------------------------------------------
>                 Key: TAPESTRY-1774
>                 URL: https://issues.apache.org/jira/browse/TAPESTRY-1774
>             Project: Tapestry
>          Issue Type: Improvement
>          Components: tapestry-core
>    Affects Versions: 4.1.3
>            Reporter: Martino Piccinato
>            Priority: Minor
> Sorry to bug about this, maybe there's something I don't understand about it but all
in all I cant' see no reasons why an optional unbounded parameter should throw an exception
if a setter is called over it. What's the downside of considering it just a property in that
> Not that I consider this an important feature or a major fault but it would seem to me
a more logical behaviour, see e.g. TAPESTRY-1699 and TAPESTRY-1700.
> So instead of 
> {code:title=ParameterPropertyWorker.java|borderStyle=solid}
>         // In the normal state, we update the binding first - and it's an error
>         // if the parameter is not bound.
>         builder.addln("if ({0} == null)", bindingFieldName);
>         builder.addln("  throw new {0}(\"Parameter ''{1}'' is not bound and can not be
>                       ApplicationRuntimeException.class.getName(), parameterName);
>         // Always updated the binding first (which may fail with an exception).
>         builder.addln("{0}.setObject(($w) $1);", bindingFieldName);
> {code}
> Have something more like:
> {code:title=ParameterPropertyWorker.java|borderStyle=solid}
>         builder.addln("if ({0} != null)", bindingFieldName);
>         builder.addln("{0}.setObject(($w) $1);", bindingFieldName);
> {code}

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