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From d...@multitask.com.au
Subject [jelly] 'bug' setting tag properties from properties file
Date Tue, 17 Dec 2002 14:01:37 GMT
Background:
I'm using the latka plugin.
It has a set of Jelly tags which have Strings for their setter methods, 
i.e. the Request tag has a setHost(String) method.

Problem:
1) I populate these tags with an expression, which references properties 
maven reads from project.properties, e.g.

<suite defaultHost="${latka.host}">

where latka.host is defined in the ${basedir}/project.properties

2) When the tag is executed, I get a 
2002-12-17 13:29:52,798 DEBUG org.apache.commons.jelly.impl.TagScript - 
Caught exception: java.lang.IllegalArgumentException: Property 
'defaultHost' has no write method
java.lang.IllegalArgumentException: Property 'defaultHost' has no write 
method

3) This is caused because the expression is being passed to BeanUtils with 
no conversion done, e.g. :
2002-12-17 13:29:52,758 DEBUG org.apache.commons.jelly.JellyContext - 
findVariable: latka.host value: 
org.apache.commons.jelly.expression.ConstantExpression@502819[value=DEV270]
2002-12-17 13:29:52,758 DEBUG org.apache.commons.beanutils.BeanUtils - 
setProperty(org.apache.commons.latka.jelly.SuiteTag@78aa80, defaultHost, 
org.apache.commons.jelly.expression.ConstantExpression@502819[value=DEV270])

4) This tag has no methods that take an Expression as a paramter, and 
since no conversion is being done by Jelly/BeanUtils the code fails with 
the above IllegalArgumentException.

5) When these properties are passed in from the command prompt via 
-Dlatka.host=DEV270 for example, all works fine, as they are explicitly 
known as Strings.

Any idea where to start in fixing this?
--
dIon Gillard, Multitask Consulting
Blog:      http://www.freeroller.net/page/dion/Weblog
Work:      http://www.multitask.com.au


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