You must use the id tag when listing developers in your POM, otherwise NPE if using the changelog plugin

If you don't add an id tag to your developer in your pom (which is not required), and you configure a changelog report, then this piece of code will generate an NPE, because you can't add a null key to a Hashtable:

ChangeLog.java
–
private Properties getUserList()
{
Properties userList = new Properties();

Developer developer = null;
for (Iterator i = getDevelopers().iterator(); i.hasNext()

return userList;
}

–

[INFO] Generate "changelog" report.
[INFO] Generating changed sets xml to: /Volumes/Jaguar/Users/woodj/Documents/pmgt/pmgt/trunk/pmgt-jar/target/changelog.xml
[INFO] SCM Working Directory: /Volumes/Jaguar/Users/woodj/Documents/pmgt/pmgt/trunk/pmgt-jar/src/main/java
[INFO] SCM Command Line[0]: svn
[INFO] SCM Command Line[1]: log
[INFO] SCM Command Line[2]: -v
[INFO] SCM Command Line[3]: -r

:

[INFO] ChangeSet between 2005-10-29 and 2005-11-29: 14 entries
[INFO] ----------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ----------------------------------------------------------------------------
[INFO] null
[INFO] ----------------------------------------------------------------------------
[DEBUG] Trace
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:398)
at org.apache.maven.changelog.ChangeLog.getUserList(ChangeLog.java:530)
at org.apache.maven.changelog.ChangeLog.replaceAuthorIdWithName(ChangeLog.java:541)
at org.apache.maven.changelog.ChangeLog.doExecute(ChangeLog.java:370)
at org.apache.maven.changelog.ChangeLogReport.getChangeLog(ChangeLogReport.java:263)
at org.apache.maven.changelog.ChangeLogReport.generateChangeSetsFromSCM(ChangeLogReport.java:218)
at org.apache.maven.changelog.ChangeLogReport.getChangedSets(ChangeLogReport.java:198)
at org.apache.maven.changelog.ChangeLogReport.executeReport(ChangeLogReport.java:173)
at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:117)
at org.apache.maven.plugins.site.SiteMojo.generateReportsPages(SiteMojo.java:802)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:301)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:412)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:519)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:469)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:448)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:301)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:268)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:137)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:322)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:115)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
[INFO] ----------------------------------------------------------------------------

Not sure if this should be fixed in the docs, or in code.

Thanks,

Julian