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From: cknell@onebox.com
To: user@ant.apache.org
Subject: RE: RE: Setting the value of a property conditonally
Date: Fri, 04 Aug 2006 09:26:54 -0400
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Your example shows exactly the limitation I'm trying to get around. There are only two possible values that "hasMoney" can take in your example. Either "hasMoney" is "true" or "hasMoney" is false.

I'm faced with a situation that calls for me to select the previous "business day". In the U.S. business days are generally Mon, Tue, Wed, Thu, Fri, with Saturday and Sunday not usually counted.

On most days of the week, the previous business day is the current date - 1 day. On Monday however, the previous business day is the current date - 3 days.

Federal holidays complicate the matter further. In the U.S. most federal holidays are observed on Mondays. Therefore, on a Tuesday following a Monday that is a federal holiday, the previous business day is the current date - 4 days.

Some federal holidays do occur on other days, so on days following one of these, the previous business day is the current date - 2 days (unless, of course, the federal holiday falls on a non-business day).

This is all fairly easily handled in XSLT using the <xsl:choose> element and a list of the dates on which federal holidays are observed.

I have worked out an alternative plan that calls for using the <xslt> task to process the file containing the list of federal holidays and create a new XML file holding the data I want. I could then use the <xmlproperty> element to set the values of the properties.

I don't really want to create an intermediate file to perform this task, so I'm asking if there is any other way to achieve this result in Ant that I'm not seeing because I have the wrong mental model.
-- 
Charles Knell
cknell@onebox.com - email


-----Original Message-----
From:     Tshepo Rachidi <TshepoR@discovery.co.za>
Sent:     Fri, 4 Aug 2006 15:07:33 +0200
To:       "Ant Users List" <user@ant.apache.org>
Subject:  RE: Setting the value of a property conditonally

I think that u have to type as follows

 <condition property="hasMoney" value="false" else="true">
	<not>
		<equals arg1="${wallet}" arg2="${empty}"/>
	</not>
 </condition>

If I am wrong please rectify.
I am still a newbie
Regards,
Tshepo

-----Original Message-----
From: cknell@onebox.com [mailto:cknell@onebox.com] 
Sent: Friday 04 August 2006 15:01
To: user@ant.apache.org
Subject: Setting the value of a property conditonally

I've been testing the <condition> task and either it is very limited in
its functioning or I am carrying the wrong mental model into the
exercise.

I work mostly in XSLT these days. There I can set the value of a
variable by testing any number of conditions and nested conditions using
the <xsl:choose> element.

<condition> appears to be based on the "if-then-else" model. What I'm
looking for is a means of setting a property on the "if-then-else-elsif"
model.

Is there some way of doing this with ant 1.65 as it stands or do I have
to write an extension to accomplish this?

Thanks.

--
Charles Knell
cknell@onebox.com - email

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