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Re: [m2e-users] m2e plugin execution enhances classes but eclipse resources are then out of sync 
If you are interested in providing a patch that implements this idea,
please join m2e-dev@xxxxxxxxxxx and I'll give you some pointers where to
start and explain basic requirements to the patches we can accept.

--
Regards,
Igor

On 11-12-07 9:16 PM, Anthony Fryer wrote:

It would be nice if you could configure the lifecycle-mappnig to tell
the m2e MavenBuilder that the classes have been modified by a plugin
execution and that it should refresh the class resources in eclipse
without triggering a new incremental build.

Something like this...

<action>
<execute>
<modifiesClassFiles>true</modifiesClassFiles>
</execute>
</action>

I'm just thinkg that might remove the need to create an m2e extension to
get this to work.

Cheers,

Anthony

 > Date: Wed, 7 Dec 2011 07:30:08 -0500
 > From: igor@xxxxxxxxxxxxxx
 > To: m2e-users@xxxxxxxxxxx
 > Subject: Re: [m2e-users] m2e plugin execution enhances classes but
eclipse resources are then out of sync
 >
 > This is exactly the problem described in [1]. Here is a relevant quote:
 >
 > "Out-of-workspace resource changes made by Maven plugin triggered
 > unexpected workspace builds. This was very indeterministic. In some
 > cases projects appeared to work fine. In some cases, generated/filtered
 > resources would go missing. And in some cases workspace build would go
 > on forever."
 >
 > You need a proper m2e integration to modify .class files, <execute/>
 > mapping will not work.
 >
 > [1] http://wiki.eclipse.org/M2E_plugin_execution_not_covered
 >
 > --
 > Regards,
 > Igor
 >
 > On 11-12-07 6:51 AM, Anthony Fryer wrote:
 > > I have a JPA project and as part of my maven build I am enhancing the
 > > classes. In eclipse have auto build enabled and in my pom.xml I have
 > > configured m2e to execute the ehance goal to run as part of the build.
 > > This all seems to work fine except for one issue. After the
enhancer has
 > > run, the class files are out of sync with eclipse. This is a problem
 > > because if i try to publish to a server I get an error like
"Resource is
 > > out of sync with the file system:
 > > '/my-project/target/classes/com/xyz/entity/MyEntity.class'.". I can't
 > > seem to manually refresh the classes either, so I'm stuck at this
point,
 > > not being able to publish to the server.
 > >
 > > If i configure eclipse to auto Refresh resources automatically
 > > (windows->preferences->General->Workspace->(Refresh using native hooks
 > > or polling | Refresh on Access) ), then i get into a never ending build
 > > cycle loop. It builds, runs the enhancer which updates the class files,
 > > reloads the class files which triggers another auto build, and so on,
 > > building forever.
 > >
 > > Could the m2e plugin update the eclipse resources after the maven
 > > builder has executed, so that eclipse is then in sync with the class
 > > files that could potentially get modified by the maven builder?
 > >
 > > The relevent sections of the pom.xml for my project are as follows...
 > >
 > > <plugin>
 > > <groupId>org.codehaus.mojo</groupId>
 > > <artifactId>openjpa-maven-plugin</artifactId>
 > > <version>1.2</version>
 > > <configuration>
 > > <includes>**/entity/*.class</includes>
 > > <excludes>**/entity/*_.class,**/entity/*$*.class</excludes>
 > > </configuration>
 > > <executions>
 > > <execution>
 > > <id>enhancer</id>
 > > <phase>process-classes</phase>
 > > <goals>
 > > <goal>enhance</goal>
 > > </goals>
 > > </execution>
 > > </executions>
 > > </plugin>
 > >
 > > <pluginManagement>
 > > <plugins>
 > > <!--This plugin's configuration is used to store Eclipse m2e settings
 > > only. It has no influence on the Maven build itself.-->
 > > <plugin>
 > > <groupId>org.eclipse.m2e</groupId>
 > > <artifactId>lifecycle-mapping</artifactId>
 > > <version>1.0.0</version>
 > > <configuration>
 > > <lifecycleMappingMetadata>
 > > <pluginExecutions>
 > > <pluginExecution>
 > > <pluginExecutionFilter>
 > > <groupId>org.codehaus.mojo</groupId>
 > > <artifactId>
 > > openjpa-maven-plugin
 > > </artifactId>
 > > <versionRange>[1.2,)</versionRange>
 > > <goals>
 > > <goal>enhance</goal>
 > > </goals>
 > > </pluginExecutionFilter>
 > > <action>
 > > <execute/>
 > > </action>
 > > </pluginExecution>
 > > </pluginExecutions>
 > > </lifecycleMappingMetadata>
 > > </configuration>
 > > </plugin>
 > > </plugins>
 > > </pluginManagement>
 > >
 > >
 > > _______________________________________________
 > > m2e-users mailing list
 > > m2e-users@xxxxxxxxxxx
 > > https://dev.eclipse.org/mailman/listinfo/m2e-users
 > _______________________________________________
 > m2e-users mailing list
 > m2e-users@xxxxxxxxxxx
 > https://dev.eclipse.org/mailman/listinfo/m2e-users


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