Doug,
I spent considerable time trying to reproduce this
NullPointerException without any success. So, please create bug report
in jira and attach complete Eclipse projects that would allow to
reproduce this issue and also specify what Eclipse version you are running.
I should have mentioned in the announcement, that defaults for nested
module management been changed in 0.0.11 version. By default nested
modules are disabled but you can enable it either using popup menu Maven
/ Enable Nested Modules, or directly trough configuration of the "Maven
Dependencies" classpath container. See
http://docs.codehaus.org/display/M2ECLIPSE/Dependency+Management
The reason for this is to better support project import, so nested
modules are imported as separate projects by default, but again it can
be changed in advanced settings to use old behavior.
http://docs.codehaus.org/display/M2ECLIPSE/Importing+Maven+projects
Also note that most if not all issues related to "Maven Dependencies"
container can be resolved by closing your projects, then reopening them
and running Project / Clean.
In some cases you may also need to refresh your Eclipse workspace if
you are doing changes outside of Eclipse. Your steps to reproduce issue
aren't detailed enough to tell what exactly you are doing to create
projects, folders, and to edit poms, so maybe it is as simple as that.
regards,
Eugene
Doug Bateman wrote:
I just installed the latest m2eclipse 0.0.11.20070916 plugin and am
encountering two errors. This is the second of the two emails
describing the second error.
Problem Description: The m2eclipse plugin throws a
NullPointerException I attempt to use the "Enable Nested Modules" menu
item on a project.
Steps to Reproduce:
1. Create a maven project.
2. Create sub folders for "sub modules".
3. Create poms for each, in the appropriate sub folder.
4. Create a top level pom which uses the standard
<modules><module>...</module>...</modules> syntax to create a standard
maven multi-module build.
5. Put dependencies in some of the sub projects.
6. Enable the .m2 plugin's dependency management on the top level
folder/project.
7. Notice none of the dependencies show up in the project (they used
to appear in prior versions of the plugin).
8. Attempt to fix this by using the right click menu item
"Maven->Enable Nested Models".
9. Observe the NullPointerException.
10. Go to the menu "Window->Show View->Other". Select "PDE
Runtime->Error Log".
11. In the error log, note the logged exception, which reads:
java.lang.NullPointerException
at
org.maven.ide.eclipse.container.Maven2Builder.addModulePoms(Maven2Builder.java:103)
at
org.maven.ide.eclipse.container.Maven2Builder.addModulePoms(Maven2Builder.java:110)
at
org.maven.ide.eclipse.container.Maven2Builder.build(Maven2Builder.java:80)
at
org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:624)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java :37)
at
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:166)
at
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:197)
at org.eclipse.core.internal.events.BuildManager$1.run
(BuildManager.java:246)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:249)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop
(BuildManager.java:302)
at
org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:334)
at
org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:137)
at org.eclipse.core.internal.events.AutoBuildJob.run
(AutoBuildJob.java:235)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
My Questions for the Mailing List:
+ I'd like to get at least 1 other person to try the steps to recreate
above and confirm the problems do indeed happen for them.
+ Should I go ahead and open a JIRA issue for this?
+ Does this latest plugin simply not support a project with nested
modules (ie multi-module builds)?
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