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Posted to users@tomcat.apache.org by Gabriel J Zimmerman <ga...@groundzero.com> on 2001/08/21 23:25:42 UTC
Imaginative webapp setup. Is this possible to do?
I have a server that has many virtual hosts, say
http://www.myhost1.com/, http://www.myhost2.com, http://www.myhost3.com
etc. etc.
Is it possible to create a webapp that is hosted at the / level for each
of these hosts, where the servlets,tag libraries, and java classes
located in the WEB-INF section would all be the same but where the docs
and JSP files would be unique for each host?
By unique, I mean that each host would have its own html files, JSP
files, image files etc., which would not be accessable from the other
hosts.
Thanks,
Gabe Zimmerman
Re: Imaginative webapp setup. Is this possible to do?
Posted by "Craig R. McClanahan" <cr...@apache.org>.
On Thu, 23 Aug 2001, Jeff Turner wrote:
> Date: Thu, 23 Aug 2001 19:13:21 +1000
> From: Jeff Turner <je...@socialchange.net.au>
> Reply-To: tomcat-user@jakarta.apache.org
> To: tomcat-user@jakarta.apache.org
> Subject: Re: Imaginative webapp setup. Is this possible to do?
>
> On Thu, Aug 23, 2001 at 12:43:49AM -0500, Brandon Cruz wrote:
> > Thank you, but I've been told that...
> >
> > >"In Tomcat 3.x, the class loader follows the usual "delegate upwards then
> > >look locally" approach, so that the class would be loaded from
> > >tomcat_home/lib unconditionally.
> > >
> > >In Tomcat 4.x, the underlying servlet spec gives web apps the option (it
> > >is not a requirement) to look in the local repositories (/WEB-INF/classes
> > >and /WEB-INF/lib/*.jar) *first*, before delegating upwards, and Tomcat
> > >4.0 implements this feature."
> >
> > You say in 3.3 I can accomplish the same thing as in tomcat4 though? That
> > would be very nice!
>
> That sounds like Craig or some similarly clueful person, so I'd say
> they're right ;)
Yep. :-) I'm at least somewhat clueful -- except about 3.3 about which I
know very little of the internals.
> Only external goals like spec conformance could force
> such a patently braindead scheme in an open source project.
>
Just out of curiosity, which scheme do you consider brain-dead?
> > Brandon
> >
> > P.S. My 3.2.1 does have and use $tomcat_home/classes, should it not?
>
> Does it work? ;) If so, cool..
>
> --Jeff
>
Craig
Re: Imaginative webapp setup. Is this possible to do?
Posted by Jeff Turner <je...@socialchange.net.au>.
On Thu, Aug 23, 2001 at 12:43:49AM -0500, Brandon Cruz wrote:
> Thank you, but I've been told that...
>
> >"In Tomcat 3.x, the class loader follows the usual "delegate upwards then
> >look locally" approach, so that the class would be loaded from
> >tomcat_home/lib unconditionally.
> >
> >In Tomcat 4.x, the underlying servlet spec gives web apps the option (it
> >is not a requirement) to look in the local repositories (/WEB-INF/classes
> >and /WEB-INF/lib/*.jar) *first*, before delegating upwards, and Tomcat
> >4.0 implements this feature."
>
> You say in 3.3 I can accomplish the same thing as in tomcat4 though? That
> would be very nice!
That sounds like Craig or some similarly clueful person, so I'd say
they're right ;) Only external goals like spec conformance could force
such a patently braindead scheme in an open source project.
> Brandon
>
> P.S. My 3.2.1 does have and use $tomcat_home/classes, should it not?
Does it work? ;) If so, cool..
--Jeff
RE: Imaginative webapp setup. Is this possible to do?
Posted by Brandon Cruz <bc...@norvax.com>.
Thank you, but I've been told that...
>"In Tomcat 3.x, the class loader follows the usual "delegate upwards then
>look locally" approach, so that the class would be loaded from
>tomcat_home/lib unconditionally.
>
>In Tomcat 4.x, the underlying servlet spec gives web apps the option (it
>is not a requirement) to look in the local repositories (/WEB-INF/classes
>and /WEB-INF/lib/*.jar) *first*, before delegating upwards, and Tomcat
>4.0 implements this feature."
You say in 3.3 I can accomplish the same thing as in tomcat4 though? That
would be very nice!
Brandon
P.S. My 3.2.1 does have and use $tomcat_home/classes, should it not?
-----Original Message-----
From: Jeff Turner [mailto:jeff@socialchange.net.au]
Sent: Wednesday, August 22, 2001 11:57 PM
To: tomcat-user@jakarta.apache.org
Subject: Re: Imaginative webapp setup. Is this possible to do?
On Wed, Aug 22, 2001 at 09:58:33AM -0500, Brandon Cruz wrote:
> So...if you can put all common class files into tomcat_home/classes, can
we
> put newer versions of the same class files into the new applications
> web-inf/classes and assume that they will be read first by the web
> application? Or...can we put the old versions of the jar files into the
old
> applications web-inf/lib and assume those will be read first
No, in 3.2.x the $TOMCAT_HOME/lib always takes precedence over
WEB-INF/lib and WEB-INF/classes.
> I am using tomcat 3.2.1 with many vhosts and they all use one set of
classes
> and jar files right now, located in tomcat_home/classes and
tomcat_home/lib.
I didn't know there was a $TOMCAT_HOME/classes.. only $TOMCAT_HOME/lib.
> I want to update many of these classes for newer vhosts, but don't want it
> to change for the old applications using them.
Yep, you're out of luck. Upgrade to 3.3 or 4.0 if you want WEB-INF/* to
override $TOMCAT_HOME/*
--Jeff
> Brandon
Re: Imaginative webapp setup. Is this possible to do?
Posted by Jeff Turner <je...@socialchange.net.au>.
On Wed, Aug 22, 2001 at 09:58:33AM -0500, Brandon Cruz wrote:
> So...if you can put all common class files into tomcat_home/classes, can we
> put newer versions of the same class files into the new applications
> web-inf/classes and assume that they will be read first by the web
> application? Or...can we put the old versions of the jar files into the old
> applications web-inf/lib and assume those will be read first
No, in 3.2.x the $TOMCAT_HOME/lib always takes precedence over
WEB-INF/lib and WEB-INF/classes.
> I am using tomcat 3.2.1 with many vhosts and they all use one set of classes
> and jar files right now, located in tomcat_home/classes and tomcat_home/lib.
I didn't know there was a $TOMCAT_HOME/classes.. only $TOMCAT_HOME/lib.
> I want to update many of these classes for newer vhosts, but don't want it
> to change for the old applications using them.
Yep, you're out of luck. Upgrade to 3.3 or 4.0 if you want WEB-INF/* to
override $TOMCAT_HOME/*
--Jeff
> Brandon
RE: Imaginative webapp setup. Is this possible to do?
Posted by Brandon Cruz <bc...@norvax.com>.
So...if you can put all common class files into tomcat_home/classes, can we
put newer versions of the same class files into the new applications
web-inf/classes and assume that they will be read first by the web
application? Or...can we put the old versions of the jar files into the old
applications web-inf/lib and assume those will be read first
I am using tomcat 3.2.1 with many vhosts and they all use one set of classes
and jar files right now, located in tomcat_home/classes and tomcat_home/lib.
I want to update many of these classes for newer vhosts, but don't want it
to change for the old applications using them.
Brandon
-----Original Message-----
From: Jeff Turner [mailto:jeff@socialchange.net.au]
Sent: Tuesday, August 21, 2001 6:55 PM
To: tomcat-user@jakarta.apache.org
Subject: Re: Imaginative webapp setup. Is this possible to do?
On Tue, Aug 21, 2001 at 05:25:42PM -0400, Gabriel J Zimmerman wrote:
> I have a server that has many virtual hosts, say
> http://www.myhost1.com/, http://www.myhost2.com, http://www.myhost3.com
> etc. etc.
Yer.. once did a site with 36 of these. It wasn't pleasant ;)
> Is it possible to create a webapp that is hosted at the / level for each
> of these hosts, where the servlets,tag libraries, and java classes
> located in the WEB-INF section would all be the same but where the docs
> and JSP files would be unique for each host?
You can put your common classes into $TOMCAT_HOME/lib (or whatever it is
for 3.3 and 4.0). Taglib jars can go there, but the XML definition files
will have to be duplicated in the WEB-INFs.
>
> By unique, I mean that each host would have its own html files, JSP
> files, image files etc., which would not be accessable from the other
> hosts.
Yep. Logically they're still separate webapps.
--Jeff
>
> Thanks,
>
> Gabe Zimmerman
Re: Imaginative webapp setup. Is this possible to do?
Posted by Jeff Turner <je...@socialchange.net.au>.
On Tue, Aug 21, 2001 at 05:25:42PM -0400, Gabriel J Zimmerman wrote:
> I have a server that has many virtual hosts, say
> http://www.myhost1.com/, http://www.myhost2.com, http://www.myhost3.com
> etc. etc.
Yer.. once did a site with 36 of these. It wasn't pleasant ;)
> Is it possible to create a webapp that is hosted at the / level for each
> of these hosts, where the servlets,tag libraries, and java classes
> located in the WEB-INF section would all be the same but where the docs
> and JSP files would be unique for each host?
You can put your common classes into $TOMCAT_HOME/lib (or whatever it is
for 3.3 and 4.0). Taglib jars can go there, but the XML definition files
will have to be duplicated in the WEB-INFs.
>
> By unique, I mean that each host would have its own html files, JSP
> files, image files etc., which would not be accessable from the other
> hosts.
Yep. Logically they're still separate webapps.
--Jeff
>
> Thanks,
>
> Gabe Zimmerman