Detecting Tomcat 5

[Matt Raible <ma...@raibledesigns.com>]

I am currently using Ant to detect if a user is using Tomcat 5 or Tomcat
4.  The main reason is so I can deploy my context.xml to the appropriate
location on the server.  Right now I'm using some ant-contrib stuff to
parse the directory name and using <if> statements to go off that.
Here's the relevant XML:

        <propertyregex property="tomcat.version"
            input="${tomcat.home}"
            regexp="tomcat-([^\.]*)"
            select="\1"
            casesensitive="false"/>

        <if>
            <equals arg1="${tomcat.version}" arg2="5"/>
            <then>
                <echo message="Detected Tomcat 5..."/>
                <echo level="info">Copying ${webapp.name}.xml...</echo>
                <copy
tofile="${tomcat.home}/conf/Catalina/localhost/${webapp.name}.xml"
                    file="metadata/conf/tomcat-context.xml"
overwrite="true">
                    <filterset refid="db.variables"/>
                </copy>
            </then>
            <else>
                <echo message="Detected Tomcat 4..."/>
                <echo level="info">Copying ${webapp.name}.xml...</echo>
                <copy tofile="${tomcat.home}/webapps/${webapp.name}.xml"
                    file="metadata/conf/tomcat-context.xml"
overwrite="true">
                    <filterset refid="db.variables"/>
                </copy>
            </else>
        </if>

I'd like to change the setting of the version so it's not dependent on
the filename, but rather on classes available.  I believe the
<available> task will help, but I'm unsure of how to to do the "if"
logic with this property.  Any help is appreciated.

        <available classname="org.apache.catalina.ant.SessionsTask"
            property="tomcat5"/>

Thanks,

Matt



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Re: Detecting Tomcat 5

[Stefan Bodewig <bo...@apache.org>]

On Wed, 28 Apr 2004, Matt Raible <ma...@raibledesigns.com> wrote:

> If I do, I'll have to put it in my $ANT_HOME/lib directory in order
> for it to be a part of the default classpath.

You can give a <classpath> to <avalaible> that contains the jat you
want to check for.  Which means that you have to know where it is in
the first place.

Is there a file under ${tomcat.home} that would help you (check with
<available> whether the file is there)?  Sorry, I have no Tomcat 5
installation around

Stefan

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Re: Detecting Tomcat 5

[Matt Raible <ma...@raibledesigns.com>]

Thanks Stefan.  After looking into this more, I don't think I'm going 
to be able to key off a class in catalina-ant.jar.  If I do, I'll have 
to put it in my $ANT_HOME/lib directory in order for it to be a part of 
the default classpath.  Is there a better way to detect Tomcat 5?

Thanks,

Matt

On Apr 27, 2004, at 11:55 PM, Stefan Bodewig wrote:

> On Tue, 27 Apr 2004, Matt Raible <ma...@raibledesigns.com> wrote:
>
>> I believe the <available> task will help, but I'm unsure of how to
>> to do the "if" logic with this property.
>
> <available> is a task and a condition (if you leave off the property
> attribute) at the same time, so you can say
>
> <if>
>   <available classname="org.apache.catalina.ant.SessionsTask">
>   ...
> </if>
>
> If you want to use it as a task, you can use the <isset> condition to
> check for the presence of the property <available> was supposed to
> set.
>
> Stefan
>
> -- 
> http://stefanbodewig.blogger.de/
>
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> To unsubscribe, e-mail: user-unsubscribe@ant.apache.org
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Re: Detecting Tomcat 5

[Stefan Bodewig <bo...@apache.org>]

On Tue, 27 Apr 2004, Matt Raible <ma...@raibledesigns.com> wrote:

> I believe the <available> task will help, but I'm unsure of how to
> to do the "if" logic with this property.

<available> is a task and a condition (if you leave off the property
attribute) at the same time, so you can say

<if>
  <available classname="org.apache.catalina.ant.SessionsTask">
  ...
</if>

If you want to use it as a task, you can use the <isset> condition to
check for the presence of the property <available> was supposed to
set.

Stefan

-- 
http://stefanbodewig.blogger.de/

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