If I don't include an Export-Package directive in my
maven-bundle-plugin POM configuration section, the plugin (or BND)
complains that it can't find the default package it synthesizes.
If I attempt to silence it by putting in an empty Export-Package
declaration like so:
<build>
<plugins>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
<configuration>
<instructions>
<Export-Package></Export-Package>
<!-- ... -->
</instructions>
</configuration>
</plugin>
</plugins>
</build>
the plugin dies with the following error:
,----
| java.lang.NullPointerException
| at java.util.Hashtable.put(Hashtable.java:394)
| at java.util.Hashtable.putAll(Hashtable.java:466)
| at
org.apache.felix.tools.maven2.bundleplugin.BundlePlugin.execute(BundlePlugin.java:151)
| at
org.apache.felix.tools.maven2.bundleplugin.BundlePlugin.execute(BundlePlugin.java:115)
| at
org.apache.felix.tools.maven2.bundleplugin.BundlePlugin.execute(BundlePlugin.java:110)
| at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:420)
| at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
| at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480)
| at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459)
| at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
| at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
| at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
| at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:330)
| at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:123)
| at org.apache.maven.cli.MavenCli.main(MavenCli.java:272)
| 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:597)
| 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)
`----
Is this a known problem?
As a workaround, I tried an Export-Package value of "!*", which
produced the following warning:
,----
| [INFO] [bundle:bundle]
| [WARNING] Warning building bundle
| my.symbolic.name:bundle:1.0.0-SNAPSHOT :
| Did not find matching referal for !*
`----
What's the right way to ask for /no/ Export-Package (or
Import-Package) declaration?
--
Steven E. Harris
