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Re: Tomcat redeploys web application when a JSP get changed [message #222641] Tue, 14 October 2008 06:14 Go to next message
Mohsen Saboorian is currently offline Mohsen SaboorianFriend
Messages: 19
Registered: July 2009
Junior Member
Larry,
I think I found where the issue come from, but still no workaround.

I have two projects, one is a simple Java project which performs DBMS data
access (say p1), and another web module (say p2). Not all of my .jar files
are copied in the WEB-INF/lib of p2 (webmodule) project, but they are
actually referenced through "Java EE Module Dependencies", so that Eclipse
copies p1 and p2 projects' dependencies to the target module deployment
folder's WEB-INF/lib.

p1 project has Utility Module facet, so that whenever it changes a new jar
file is created and exported to p2's WEB-INF/lib. The problem is that
whenever I change a simple .jsp page (in p2), a new p1.jar is created in
WEB-INF/lib and this is the cause that Tomcat reloads the module.

There is also another issue which I believe happens because of another facet
set in my p1 project. I have eclipselink.jar as a dependency in my pure java
project (p1). There is also a JPA facet set in p1 project. Whenever I change
a jsp, not only p1.jar is modified, but also eclipselink.jar is re-copied in
WEB-INF/lib.

Isn't it a bug in WTP facet engine?

Thanks,
Mohsen.

"Larry Isaacs" <Larry.Isaacs@sas.com> wrote in message
news:gcdaic$v85$1@build.eclipse.org...
> Just changing a JSP shouldn't cause a redeploy. I did some simple
> testing with Eclipse 3.4.1 and WTP 3.0.2 to confirm this. Your
> redeployments, suggest something else is getting published that is
> triggering the reload. Rewriting of server.xml during each publish is
> normal and wouldn't trigger the reload.
>
> You can try right-clicking on the Tomcat server in the Servers view and
> selecting "Clean...". This will cause a full publish for all projects
> on the server and may clean out some error in the publish data that
> might be causing some additional file(s) to be unnecessarily published.
> If that doesn't help we'll have to dig deeper to find what is
> triggering the reloads.
>
> Cheers,
> Larry
>
> Mohsen Saboorian wrote:
>> I mean an application redeploy. My webapp is reloaded if any page
>> changes.
>> Any workaround?
>>
>> Thanks,
>> Mohsen.
>>
>> "Larry Isaacs" <Larry.Isaacs@sas.com> wrote in message
>> news:gbtjqt$i8c$1@build.eclipse.org...
>>> Mohsen Saboorian wrote:
>>>> Hi,
>>>>
>>>> I have two duplicate web applications, one in Ganyede 3.4.0 and one in
>>>> 3.4.1. In both projects "Automacitally publish when resources change"
>>>> is
>>>> selected. In 3.4.0 my configuration works fine and tomcat doesn't
>>>> redeploy application on a jsp change, but the new 3.4.1 redeploys
>>>> tomcat
>>>> as I change a jsp. When TC decides a redeploy? I also chacked for
>>>> modify
>>>> date of web.xml but it was not modified. I've noticed that whenever a
>>>> jsp
>>>> is changed, org.eclipse.wst.server.core/tmpx/conf/server.xml is also
>>>> modified (in both projects).
>>>>
>>>> Any hint how to prevent redeploying on page changes?
>>>>
>>>> Mohsen.
>>> Rather than guess, what exactly do you mean by "redeploys tomcat". It's
>>> not clear whether you are referring to something Tomcat is doing, like
>>> reloading a webapp, or something WTP is doing, like publishing the
>>> server
>>> or asking for a restart.
>>>
>>> Cheers,
>>> Larry
>>
>>
Re: Tomcat redeploys web application when a JSP get changed [message #222645 is a reply to message #222641] Tue, 14 October 2008 13:30 Go to previous message
Larry Isaacs is currently offline Larry IsaacsFriend
Messages: 1310
Registered: July 2009
Senior Member
It is up to the adapter (in this case the Tomcat adapter) to handle the
task of publishing modules to the server. After a project's module has
been published the first time, the Tomcat adapter makes an effort to
only include changes in future publishes and not re-publish anything
that doesn't need it. So it would be a bug in the Tomcat adapter that
the jars are being re-published unnecessarily (though the bug could have
roots that reach into other plug-ins). At this point it would be worth
opening a Bug against the "jst.server" component (which includes the
Tomcat adapter) of the WTP Server Tools project of Web Tools. I'll see
if I can duplicate the behavior with this information.

Cheers,
Larry


Mohsen Saboorian wrote:
> Larry,
> I think I found where the issue come from, but still no workaround.
>
> I have two projects, one is a simple Java project which performs DBMS data
> access (say p1), and another web module (say p2). Not all of my .jar files
> are copied in the WEB-INF/lib of p2 (webmodule) project, but they are
> actually referenced through "Java EE Module Dependencies", so that Eclipse
> copies p1 and p2 projects' dependencies to the target module deployment
> folder's WEB-INF/lib.
>
> p1 project has Utility Module facet, so that whenever it changes a new jar
> file is created and exported to p2's WEB-INF/lib. The problem is that
> whenever I change a simple .jsp page (in p2), a new p1.jar is created in
> WEB-INF/lib and this is the cause that Tomcat reloads the module.
>
> There is also another issue which I believe happens because of another facet
> set in my p1 project. I have eclipselink.jar as a dependency in my pure java
> project (p1). There is also a JPA facet set in p1 project. Whenever I change
> a jsp, not only p1.jar is modified, but also eclipselink.jar is re-copied in
> WEB-INF/lib.
>
> Isn't it a bug in WTP facet engine?
>
> Thanks,
> Mohsen.
>
> "Larry Isaacs" <Larry.Isaacs@sas.com> wrote in message
> news:gcdaic$v85$1@build.eclipse.org...
>> Just changing a JSP shouldn't cause a redeploy. I did some simple
>> testing with Eclipse 3.4.1 and WTP 3.0.2 to confirm this. Your
>> redeployments, suggest something else is getting published that is
>> triggering the reload. Rewriting of server.xml during each publish is
>> normal and wouldn't trigger the reload.
>>
>> You can try right-clicking on the Tomcat server in the Servers view and
>> selecting "Clean...". This will cause a full publish for all projects
>> on the server and may clean out some error in the publish data that
>> might be causing some additional file(s) to be unnecessarily published.
>> If that doesn't help we'll have to dig deeper to find what is
>> triggering the reloads.
>>
>> Cheers,
>> Larry
>>
>> Mohsen Saboorian wrote:
>>> I mean an application redeploy. My webapp is reloaded if any page
>>> changes.
>>> Any workaround?
>>>
>>> Thanks,
>>> Mohsen.
>>>
>>> "Larry Isaacs" <Larry.Isaacs@sas.com> wrote in message
>>> news:gbtjqt$i8c$1@build.eclipse.org...
>>>> Mohsen Saboorian wrote:
>>>>> Hi,
>>>>>
>>>>> I have two duplicate web applications, one in Ganyede 3.4.0 and one in
>>>>> 3.4.1. In both projects "Automacitally publish when resources change"
>>>>> is
>>>>> selected. In 3.4.0 my configuration works fine and tomcat doesn't
>>>>> redeploy application on a jsp change, but the new 3.4.1 redeploys
>>>>> tomcat
>>>>> as I change a jsp. When TC decides a redeploy? I also chacked for
>>>>> modify
>>>>> date of web.xml but it was not modified. I've noticed that whenever a
>>>>> jsp
>>>>> is changed, org.eclipse.wst.server.core/tmpx/conf/server.xml is also
>>>>> modified (in both projects).
>>>>>
>>>>> Any hint how to prevent redeploying on page changes?
>>>>>
>>>>> Mohsen.
>>>> Rather than guess, what exactly do you mean by "redeploys tomcat". It's
>>>> not clear whether you are referring to something Tomcat is doing, like
>>>> reloading a webapp, or something WTP is doing, like publishing the
>>>> server
>>>> or asking for a restart.
>>>>
>>>> Cheers,
>>>> Larry
>>>
>
>
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