| Re: [tycho-user] How do I import a bundle-packaged project into Eclipse for debug? |
java.lang.NoClassDefFoundError: com/google/common/base/Joiner
Caused by: java.lang.ClassNotFoundException: com.google.common.base.Joiner cannot be found by BundleUser_1.0.0.qualifier
Although I've imported BundleGuava as an Existing Maven Project, the IDE does not seem to recognize it as a project that can be added to the build. I note that is is not listed in the Debug Configuration page for Plugins. Although I can add it a a project for the build dependencies, it does not seem to be recognized as a Workspace plugin.
I sure I'm omitting one essential Maven attribute on some configuration page. And I'd sure appreciate some help figuring out which attribute thats.
(I'm using Guava as an example. In my RPC application, I have a large number of more exotic libraries. Regardless, I look forward to using an externally packaged Guava in the future.)
Here's the pom.xml for BundleGuava:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.demo.bundle</groupId>
<artifactId>bundle-parent</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../bundle-parent/pom.xml</relativePath>
</parent>
<artifactId>BundleGuava</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>bundle</packaging>
<properties>
<guava.version>18.0</guava.version>
</properties>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>${guava.version}</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>2.5.3</version>
<extensions>true</extensions>
<configuration>
<instructions>
<Embed-Dependency>*;scope=compile|runtime</Embed-Dependency>
<_nouses>true</_nouses>
<_exportcontents>com.google.common.*</_exportcontents>
<_removeheaders>
Import-Package,
Embed-Dependency,
Embedded-Artifacts,
Private-Package
</_removeheaders>
</instructions>
</configuration>
</plugin>
</plugins>
</build>
</project>
Have a look at tycho wiki [1], pomfirst-thirdparty is an example of what
I called "wrapper" bundle. In your case, you have bundle that "wraps"
guava. You just import such projects as existing Maven Projects in
eclipse, and everything should just work.
[1] https://wiki.eclipse.org/Tycho/How_Tos/Dependency_on_pom-first_artifacts
--
Regards,
Igor
On 2014-10-24, 15:35, Lee Carver wrote:
Igor -
How do I create the "wrapper" bundle? Just including the dependency on
the BundleGuava "bundling" project does not get the Eclipse workspace right.
Do I need to create a separate Eclipse project? Exactly how should it
be set up? Is there an example in the m2e code base?
Thanks
Lee
On Fri, Oct 24, 2014 at 12:12 PM, Igor Fedorenko <igor@xxxxxxxxxxxxxx<groupId>org.apache.felix</__groupId><mailto:igor@xxxxxxxxxxxxxx>> wrote:
Sadly, PDE does not provide API to implement this, but there are two
workarounds
* If you have m2e/tycho integration installed, you can import your
"wrapper" bundles in Eclipse workspace and these bundle projects should
become available for other projects. This is what I usually do.
* Alternatively, you can copy these wrapper bundle to
<eclipse-install>/dropins folder. They should become available for other
workspace projects after eclipse restart.
--
Regards,
Igor
On 2014-10-24, 15:02, Lee Carver wrote:
I'm trying to use Maven and m2e to develop an RCP client that
includes
several third-partly libraries. In the past, I've been able to
use the
custom plugin builds and a local repository of third-party jars,
but I
was hoping to do better with Maven.
As a minimal example, I've tried to package a recent Google Guava
release as a third-party OSGi component. I create the component
with
"bundle" packages, and the target/../BundleGuava..jar has all the
expected components. The rest of the details are in the
attached zip,
but the bundle instructions are:
<plugin>
<artifactId>maven-bundle-__plugin</artifactId>
<version>2.5.3</version>
<extensions>true</extensions>
<configuration>
<instructions>
<Embed-Dependency>*</Embed-__Dependency>
<Export-Package>
com.google.common.*
</Export-Package>
<_nouses>true</_nouses>
<_removeheaders>
Embed-Dependency,
Embedded-Artifacts,
Import-Package,
Private-Package
</_removeheaders>
</instructions>
</configuration>
</plugin>
However, I cannot get the client plugin, GuavaUser, to properly
accept
the new module. I thought that the following dependency would
make the
artifact from above available in Eclipse.
<dependencies>
<dependency>
<groupId>org.demo.bundle</__groupId>
<artifactId>BundleGuava</__artifactId>
<version>1.0.0-SNAPSHOT</__version>
</dependency>
</dependencies>
The Maven build appears to work fine, but Eclipse reports
problems. The
sample call for Joiner.on(", ").join("Hello", "world") turns into an
ClassNotFoundException.
I'd like to do most of my debugging in the Eclipse IDE
environment, but
that would require successful launches from the Eclipse
debugger. What
is the best way to make the bundled third-party library
available to the
Eclipse IDE.
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