Odtnhj

With Apache Felix 6.0.1 I'm getting the following error when initializing the OSGi framework:

ERROR: Error parsing system bundle statement.
org.osgi.framework.BundleException: Exported package names cannot be zero length.
at org.apache.felix.framework.util.manifestparser.ManifestParser.normalizeExportClauses(ManifestParser.java:865)
at org.apache.felix.framework.util.manifestparser.ManifestParser.<init>(ManifestParser.java:217)
at org.apache.felix.framework.ExtensionManager$ExtensionManagerRevision.update(ExtensionManager.java:977)
at org.apache.felix.framework.ExtensionManager$ExtensionManagerRevision.access$000(ExtensionManager.java:885)
at org.apache.felix.framework.ExtensionManager.updateRevision(ExtensionManager.java:378)
at org.apache.felix.framework.Felix.init(Felix.java:744)
at org.apache.felix.framework.Felix.init(Felix.java:637)

I didn't get this error with Apache Felix 5.x

And I couldn't find any JAR which has an empty package names declaration except my executable JAR, which is not an OSGi bundle at all.

Why do I get this error?

Update

The issue seems to be with the bundle goal of the Maven Bundle Plugin v4.1.0

In one startup JAR with bundle packaging I have:

 <plugin>
 <groupId>org.apache.felix</groupId>
 <artifactId>maven-bundle-plugin</artifactId>
 <extensions>true</extensions> 
 <configuration>
 <versions>
 <module.b.osgi.version.clean>$project.version</module.b.osgi.version.clean>
 </versions>
 </configuration>
 <executions>
 <execution>
 <phase>generate-sources</phase>
 <goals>
 <goal>cleanVersions</goal>
 </goals>
 </execution>
 </executions> 
 </plugin>

In a properties file with resource filtering set to true I have:

org.osgi.framework.system.packages.extra=$module-b.packages

module-b.packages=$module-a.packages, 
org.mymodule.b;version="$module.b.osgi.version.clean", 
$foo-$foo.specification.version

In the generated target/classes directory I have as expected:

org.osgi.framework.system.packages.extra=$module-b.packages

module-b.packages=$module-a.packages, 
org.mymodule.b;version="0.14.0.SNAPSHOT", 
$foo-$foo.specification.version

But in the JAR it then suddenly looks like this:

org.osgi.framework.system.packages.extra=$module-b.packages

module-b.packages=$module-a.packages, 
org.mymodule.b;version="0.14.0.SNAPSHOT", 

Somehow $foo-$foo.specification.version got stripped to empty string!

Update 2

As this happens in the startup code, my current work-around is to change the packaging type back to jar. The OSGi clean version still gets substituted, but the Manifest file doesn't contain any OSGi entries anymore.

I think it is a regression bug in the Maven Bundle Plugin.

I've filed an issue here: https://issues.apache.org/jira/browse/FELIX-5980