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From Tim Funk <funk...@joedog.org>
Subject Re: detecting tomcat 5.5
Date Wed, 04 May 2005 00:07:59 GMT
It looks like the <available> task tries to load the class in a new 
classloader. Of course - doing so loads all it's super classes too - so you'd 
need to also add catalina.jar to your classpath for the <available> task.

-Tim

Jason Novotny wrote:

> 
> Thanks Tim,
> 
>    That is exactly what I was looking for, but I still can't get it to 
> work, and it seems that the <available> task is somewhat broken. Instead 
> of just checking if the class is contained in the jar it also tries to 
> resolve all of its dependencies, so this is what I get when using ant -d:
> 
>  >>>>>
> Finding class org.apache.catalina.valves.FastCommonAccessLogValve
> Loaded from 
> /Users/novotny/Jakarta/jakarta-tomcat-5.5.9/server/lib/catalina-optional.jar 
> org/apache/catalina/valves/FastCommonAccessLogValve.class
> Finding class org.apache.catalina.valves.ValveBase
> [available] Could not load dependent class 
> "org/apache/catalina/valves/ValveBase" for class 
> "org.apache.catalina.valves.FastCommonAccessLogValve"
> [available] Unable to load class 
> org.apache.catalina.valves.FastCommonAccessLogValve
>  >>>>>>
> 
>    I can't see any flags that would tell it to not check for dependencies..
> 
>    Jason
> 
> 
> 
> Tim Funk wrote:
> 
>> <available 
>> classname="org.apache.catalina.valves.FastCommonAccessLogValve"
>>            classpath="${appserver.home}/server/lib/catalina-optional.jar"
>>            property="is55"/>
>>
>> -Tim
>>
>> Jason Novotny wrote:
>>
>>>
>>>    Thanks-- unfortunately by default (at least on Unix) that file is 
>>> not executable so it wouldn't even execute by default.
>>>
>>>    Has anyone actually created an ant task or can give me some ant 
>>> logic for doing Tomcat version detection for 5.5? Here's a snippet 
>>> that worked for Tomcat 4 and Tomcat 5.0.X that was fairly easy:
>>>
>>> <if>
>>>            <available file="${appserver.home}/conf/Catalina" 
>>> type="dir" prope
>>> rty="tomcat5"/>
>>>            <then>
>>>                <echo message="Detected Tomcat 5"/>
>>>            </then>
>>>            <else>
>>>                <echo message="Detected Tomcat 4"/>
>>>            </else>
>>>        </if>
>>>
>>>    Thanks, Jason
>>>
>>> Jason Bainbridge wrote:
>>>
>>>> On 5/3/05, Jason Novotny <novotny@aei.mpg.de> wrote:
>>>>  
>>>>
>>>>> Hi,
>>>>>
>>>>>    I'm trying to update my build script to do some conditional 
>>>>> checking
>>>>> to see if I'm deploying my code to Tomcat 5.5 or using an older 
>>>>> version.
>>>>> Is there something (like a particular file or directory) I can check
>>>>> reliably that would indicate that I'm using 5.5 versus an older 
>>>>> version?
>>>>>   
>>>>
>>>>
>>>>
>>>>
>>>> Look at %CATALINA_HOME%\bin\version.bat or version.sh depending on
>>>> whether you are on Windows or *nix, if you're on Windows and don't
>>>> have version.bat then you need to download the zipped distribution and
>>>> now thw windows installer.
>>>>
>>>> Regards,
>>>>  
>>>>
>>>
>>>
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>>>
>>
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>>
> 
> 
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