[Building Sakai] Sakai and Java/Tomcat

[Yuji Shinozaki]

As I understand it, tomcat5 comes with shared.loader set and tomcat6  
does not.  And I think if I remember the history correctly, it was set  
on tomcat5 because of the outcry when tomcat5 came out in beta.  I  
guess they are trying to wean people off shared.

yuji
----


On Apr 24, 2009, at 9:47 AM, Steve Swinsburg wrote:

> Hi Yuji,
>
> No, just a default configuration of Tomcat 6, but that is a good  
> read. This bit is odd:
>
> Although developers can reference the APIs from the jars inside the  
> $CATALINA_HOME/lib directory, they shouldn't be placing their own  
> custom classes and/or jars in there. If developers need certain  
> custom classes and/or jars to be shared by all web applications,  
> then they should be placed where the shared class loader can see them.
>
> Note that Tomcat 6.0.14 the $CATALINA_HOME/shared/lib directory does  
> not exist. So this can be done in Tomcat 6 as foll:
>
> 	• Create your own $CATALINA_HOME/shared/lib directory.
> 	• Modify $CATALINA_HOME/conf/catalina.properties by changing the  
> line: shared.loader = ${catalina.home}/shared/lib
>
> However the above does not apply to certain 3rd party libraries such  
> as database drivers etc where Tomcat itself would need to set up  
> data sources. Such jars have to be placed in the $CATALINA_HOME/lib  
> folder for the common class loader to see.
>
>
> If the recommendation is for apps to have their custom classes in a  
> different location rather than lib/, Tomcat 6 should ship with that  
> setup already. It's just an additional configuration step that needs  
> to be done again and again. Perhaps that will be the default in a  
> later version of Tomcat.
>
>
> cheers,
> Steve
>
> ---
> Steve Swinsburg
> Portal Systems Developer
> Centre for e-Science
> Lancaster University
> Lancaster
> LA1 4YT
>
> email: s.swinsburg at lancaster.ac.uk
> phone: +44 (0) 1524 594870
>
>
>
>
>
>
>
> On 24 Apr 2009, at 14:40, Yuji Shinozaki wrote:
>
>> Hi Steve,
>>
>> Have you also looked at enabling shared via shared.loader in  
>> catalina.properties?
>>
>> http://bit.ly/11hX27   (see 3.)
>>
>> yuji
>> ----
>>
>>
>>
>> On Apr 24, 2009, at 8:10 AM, Steve Swinsburg wrote:
>>
>>> Hi Gerwood,
>>>
>>> So far, building Sakai with Java 1.6 seems ok, however Tomcat 6  
>>> support needs some more time and testing spent on it.
>>>
>>> I ran some tests and wrote an article with my finding for both  
>>> Java 1.6 and Tomcat 6 here:
>>> http://steve-on-sakai.blogspot.com/2009/04/sakai-with-java-6-and-tomcat-6.html
>>>
>>> These preliminary tests are by no means exhaustive, but are  
>>> indicative that it does seem to work ok.
>>>
>>> The switch to Java 1.6 (since Java 1.5 is soon to be EOL) was also  
>>> discussed here:
>>> http://collab.sakaiproject.org/pipermail/sakai-dev/2009-March/000249.html
>>>
>>>
>>> cheers,
>>> Steve
>>>
>>> ---
>>> Steve Swinsburg
>>> Portal Systems Developer
>>> Centre for e-Science
>>> Lancaster University
>>> Lancaster
>>> LA1 4YT
>>>
>>> email: s.swinsburg at lancaster.ac.uk
>>> phone: +44 (0) 1524 594870
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On 24 Apr 2009, at 06:45, Gerwood Stewart wrote:
>>>
>>>> Do I understand correctly that Sakai (2.6) is still not happy  
>>>> with either Java 1.6 or Tomcat 6?
>>>>
>>>> Gerwood
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>>
>> -----
>> Yuji Shinozaki
>> Sr. Technical Lead/Project Manager
>> University of Virginia
>> Advanced Technologies Group
>> ys2n at virginia.edu
>> ----
>> "Wealth is the relentless enemy of understanding." -- John Kenneth  
>> Galbraith
>>
>

-----
Yuji Shinozaki
Sr. Technical Lead/Project Manager
University of Virginia
Advanced Technologies Group
ys2n at virginia.edu