Return-Path: 
 <ant-user-return-7866-apmail-jakarta-ant-user-archive=jakarta.apache.org@jakarta.apache.org>
Delivered-To: apmail-jakarta-ant-user-archive@jakarta.apache.org
Received: (qmail 85566 invoked by uid 500); 20 May 2001 23:24:17 -0000
Mailing-List: contact ant-user-help@jakarta.apache.org; run by ezmlm
Precedence: bulk
List-Post: <mailto:ant-user@jakarta.apache.org>
List-Help: <mailto:ant-user-help@jakarta.apache.org>
List-Unsubscribe: <mailto:ant-user-unsubscribe@jakarta.apache.org>
List-Subscribe: <mailto:ant-user-subscribe@jakarta.apache.org>
Reply-To: ant-user@jakarta.apache.org
Delivered-To: mailing list ant-user@jakarta.apache.org
Received: (qmail 85557 invoked from network); 20 May 2001 23:24:15 -0000
X-Mail-Server: Eserv/2.95/Digital Innovations Pty Ltd
Message-Id: <5.1.0.14.0.20010521091759.00b0ce60@dual>
X-Sender: robert@dual
X-Mailer: QUALCOMM Windows Eudora Version 5.1
Date: Mon, 21 May 2001 09:22:41 +1000
To: ant-user@jakarta.apache.org
From: Robert Leftwich <digital@ix.net.au>
Subject: Re: How to check j2ee version?
In-Reply-To: <BIEPKHJJPKFCAJOBCNNCEEAGCBAA.dennis@arsdigita.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format=flowed
X-Spam-Rating: h31.sny.collab.net 1.6.2 0/1000/N

At 09:09 AM 21-05-01, Dennis Gregorovic wrote:
>Our build system depends on version 1.2 of j2ee.jar
>being used.  How can I check the version of j2ee.jar
>from Ant?

I don't know if there is a class in v1.2 that is not in the previous 
versions but if there is you can use the available tag to set a property 
only if that class is available e.g.

<!-- set the j2ee version -->
<target name="set-j2ee-version">
   <available property="j2ee1.2+" classname="unique.1.2+.j2ee.class" />
</target>

<!-- make sure j2ee version is at least 1.2 -->
<target name="ensure-j2ee" depends="set-j2ee-version" unless="j2ee1.2+">
   <fail message="Can only build if running with J2EE 1.2+"/>
</target>

HTH

Robert