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Posted to users@maven.apache.org by sipungora <ko...@yahoo.de> on 2011/05/01 03:48:31 UTC
How access classes from war dependency?
Hi,
I have a war-dependency. Its classes are arranged in war/WEB-INF/classes/.
How should I configure my pom, that I can access they?
I assume, they should be copied from war/WEB-INF/classes/ into
mywar/WEB-INF/classes/, but I don't know, how my pom should correct be
configured.
this is a config of maven-war-plugin
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<warSourceDirectory>war</warSourceDirectory>
<webXml>src/main/webapp/WEB-INF/web.xml</webXml>
<dependentWarExcludes>WEB-INF/lib/*</dependentWarExcludes>
<archive>
<manifestFile>war/META-INF/MANIFEST.MF
</manifestFile>
</archive>
</configuration>
</plugin>
and this is the war-dependency:
<dependency>
<groupId>${groupId}</groupId>
<artifactId>test</artifactId>
<version>${version}</version>
<type>war</type>
</dependency>
Thanks in advance.
Best Regards.
-sipungora.
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Re: How access classes from war dependency?
Posted by sipungora <ko...@yahoo.de>.
Thank you Dennis.
I will later write, if it works. --
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Re: How access classes from war dependency?
Posted by Dennis Lundberg <de...@apache.org>.
On 2011-05-01 03:48, sipungora wrote:
> Hi,
>
> I have a war-dependency. Its classes are arranged in war/WEB-INF/classes/.
> How should I configure my pom, that I can access they?
>
> I assume, they should be copied from war/WEB-INF/classes/ into
> mywar/WEB-INF/classes/, but I don't know, how my pom should correct be
> configured.
For that to work you need to use a feature in Maven WAR Plugin that is
called overlays. That will "overlay" the dependant WAR on top of your
current project's WAR.
See
http://maven.apache.org/plugins/maven-war-plugin/examples/war-overlay.html
>
> this is a config of maven-war-plugin
>
>
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-war-plugin</artifactId>
> <configuration>
> <warSourceDirectory>war</warSourceDirectory>
> <webXml>src/main/webapp/WEB-INF/web.xml</webXml>
> <dependentWarExcludes>WEB-INF/lib/*</dependentWarExcludes>
> <archive>
>
> <manifestFile>war/META-INF/MANIFEST.MF
> </manifestFile>
> </archive>
> </configuration>
> </plugin>
>
> and this is the war-dependency:
>
>
> <dependency>
> <groupId>${groupId}</groupId>
> <artifactId>test</artifactId>
> <version>${version}</version>
> <type>war</type>
> </dependency>
>
> Thanks in advance.
> Best Regards.
> -sipungora.
> --
> View this message in context: http://maven.40175.n5.nabble.com/How-access-classes-from-war-dependency-tp4362127p4362127.html
> Sent from the Maven - Users mailing list archive at Nabble.com.
>
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>
>
--
Dennis Lundberg
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Re: How access classes from war dependency?
Posted by Anders Hammar <an...@hammar.net>.
Should happen automagically if you declare a dependency to it in your war
project. Use the standard compile scope for the dependency.
/Anders
On Mon, May 2, 2011 at 01:33, sipungora <ko...@yahoo.de> wrote:
> Hi Anders,
>
> > you create a third project which is a standard jar Maven project.
>
> I've done it. But how can I configure my pom, that this jar will after
> building be in WEB-INF/lib of my war? Currently I do it manually.
>
> Thank you in advance.
> Best Regards,
> -sipungora--
> View this message in context:
> http://maven.40175.n5.nabble.com/How-to-access-classes-from-war-dependency-tp4362127p4363706.html
> Sent from the Maven - Users mailing list archive at Nabble.com.
>
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>
>
Re: How access classes from war dependency?
Posted by sipungora <ko...@yahoo.de>.
Hi Anders,
> you create a third project which is a standard jar Maven project.
I've done it. But how can I configure my pom, that this jar will after
building be in WEB-INF/lib of my war? Currently I do it manually.
Thank you in advance.
Best Regards,
-sipungora--
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Re: How access classes from war dependency?
Posted by sipungora <ko...@yahoo.de>.
Thank you, Anders.
I'll try this to do. --
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Re: How access classes from war dependency?
Posted by Wayne Fay <wa...@gmail.com>.
> I don't simple known where I should ask this. Besides Anders has proposed me
> this idea. I've thought that he can help me further.
stackoverflow.com
javaranch.com
forums.oracle.com
forums.terracotta.org
or try the User Forum for whatever j2ee container you are using
(glassfish, weblogic, jboss, etc)
Wayne
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Re: How access classes from war dependency?
Posted by sipungora <ko...@yahoo.de>.
Wayne Fay wrote:
>
>> If I debug 1-st war and then 2-nd one, I see that 2-nd war also goes into
>> row 5. So both wars works with different objects.
>> Can you explain me how can I solve this?
>
> This is not the right place to ask such questions -- we are Maven
> experts, not j2ee war classloader experts. You probably need to use
> some tooling like Terracotta to achieve a server-wide (or even
> cluster-wide?) singleton.
>
> Wayne
>
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>
Thank you Wayne.
I don't simple known where I should ask this. Besides Anders has proposed me
this idea. I've thought that he can help me further.
--
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Re: How access classes from war dependency?
Posted by Wayne Fay <wa...@gmail.com>.
> If I debug 1-st war and then 2-nd one, I see that 2-nd war also goes into
> row 5. So both wars works with different objects.
> Can you explain me how can I solve this?
This is not the right place to ask such questions -- we are Maven
experts, not j2ee war classloader experts. You probably need to use
some tooling like Terracotta to achieve a server-wide (or even
cluster-wide?) singleton.
Wayne
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Re: How access classes from war dependency?
Posted by sipungora <ko...@yahoo.de>.
Rick Genter wrote:
>
> I don't think you can do this. I think each war is in its own class
> loader; effectively each web application is in its own space. There may be
> ways to configure your app server to share information between wars, but
> frankly the whole concept smells of bad design.
> --
> Rick Genter
>
Thank you for explanation Rick, but what would be in this case a good
design?
Thank you in advance,
Best Regards,
-sipungora
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Re: How access classes from war dependency?
Posted by Rick Genter <rg...@interactions.net>.
On May 5, 2011, at 2:44 PM, sipungora wrote:
> I've done this, as you've explained me here. But I have one problem yet. If
> I save data in jar object from 1-st war for the 2-nd war, the 2-nd war
> cannot acces they. My object is the singleton.
>
> 1 protected static Controller controller;
> 2
> 3 public static Controller getInstance() {
> 4 if(controller == null) {
> 5 controller = new Controller();
> 6 }
> 7 return controller;
> 8 }
>
> If I debug 1-st war and then 2-nd one, I see that 2-nd war also goes into
> row 5. So both wars works with different objects.
> Can you explain me how can I solve this?
I don't think you can do this. I think each war is in its own class loader; effectively each web application is in its own space. There may be ways to configure your app server to share information between wars, but frankly the whole concept smells of bad design.
--
Rick Genter
rgenter@interactions.net
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Re: How access classes from war dependency?
Posted by sipungora <ko...@yahoo.de>.
Anders Hammar wrote:
>
> No, you create a third project which is a standard jar Maven project.
> There
> you but those Java classes. This will produce a jar artifact, which you
> declare a dependency to from both war projects.
>
I've done this, as you've explained me here. But I have one problem yet. If
I save data in jar object from 1-st war for the 2-nd war, the 2-nd war
cannot acces they. My object is the singleton.
1 protected static Controller controller;
2
3 public static Controller getInstance() {
4 if(controller == null) {
5 controller = new Controller();
6 }
7 return controller;
8 }
If I debug 1-st war and then 2-nd one, I see that 2-nd war also goes into
row 5. So both wars works with different objects.
Can you explain me how can I solve this?
Thank you in advance.
Best Regards,
-sipungora
--
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Re: How access classes from war dependency?
Posted by Anders Hammar <an...@hammar.net>.
No, you create a third project which is a standard jar Maven project. There
you but those Java classes. This will produce a jar artifact, which you
declare a dependency to from both war projects.
/Anders
On Sun, May 1, 2011 at 03:48, sipungora <ko...@yahoo.de> wrote:
> Hi,
>
> I have a war-dependency. Its classes are arranged in war/WEB-INF/classes/.
> How should I configure my pom, that I can access they?
>
> I assume, they should be copied from war/WEB-INF/classes/ into
> mywar/WEB-INF/classes/, but I don't know, how my pom should correct be
> configured.
>
> this is a config of maven-war-plugin
>
>
> <plugin>
> <groupId>org.apache.maven.plugins</groupId>
> <artifactId>maven-war-plugin</artifactId>
> <configuration>
>
> <warSourceDirectory>war</warSourceDirectory>
>
> <webXml>src/main/webapp/WEB-INF/web.xml</webXml>
>
> <dependentWarExcludes>WEB-INF/lib/*</dependentWarExcludes>
> <archive>
>
>
> <manifestFile>war/META-INF/MANIFEST.MF
> </manifestFile>
> </archive>
> </configuration>
> </plugin>
>
> and this is the war-dependency:
>
>
> <dependency>
> <groupId>${groupId}</groupId>
> <artifactId>test</artifactId>
> <version>${version}</version>
> <type>war</type>
> </dependency>
>
> Thanks in advance.
> Best Regards.
> -sipungora.
> --
> View this message in context:
> http://maven.40175.n5.nabble.com/How-access-classes-from-war-dependency-tp4362127p4362127.html
> Sent from the Maven - Users mailing list archive at Nabble.com.
>
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>
>