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POHow do I resolve a dependency in an Eclipse plug-in I didn't write?
 

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  1. POHow do I resolve a dependency in an Eclipse plug-in I didn't write?
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    <p>I'm trying to use a relatively new Eclipse plug-in (<a href="http://uqbar-tomcat-xt.sourceforge.net/download.html" rel="nofollow noreferrer">http://uqbar-tomcat-xt.sourceforge.net/download.html</a>). It doesn't have an update site, so I can't install it through the UI in Eclipse, which usually resolves dependencies. All that's available for download is a single .jar, and the instructions on the website say to just drop it in eclipse/plugins. When I do that, it seems to work, in the sense that I get the new options in Window -> Show View that the plug-in should add. However, when I try to use either of those views, I get the following error: </p> <pre><code>org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter$TerminatingClassNotFoundException: An error occurred while automatically activating bundle org.uqbar.eclipse.tomcat.xt (304). at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:125) at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:449) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:211) ...snip... Caused by: org.osgi.framework.BundleException: The activator org.uqbar.eclipse.tomcat.xt.UqbarSydeoXtActivator for bundle org.uqbar.eclipse.tomcat.xt is invalid at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleActivator(AbstractBundle.java:157) ...snip... Caused by: java.lang.Error: Unresolved compilation problems: The import com.thoughtworks cannot be resolved XStream cannot be resolved to a type XStream cannot be resolved to a type XStream cannot be resolved to a type </code></pre> <p>The dependencies page of the above site lists several dependencies, including XStream. I tried downloading those .jars separately and dropping them into the eclipse/plugins directory as well, but that didn't resolve the error. When I look at the manifest in the jar, I see:</p> <pre><code>Bundle-ClassPath: .,commons-logging-1.0.4.jar,xpp3_min-1.1.4c.jar,xstr eam-1.3.jar,xstream-benchmark-1.3.jar </code></pre> <p>But obviously the xstream jars aren't available on the classpath (which is where?). I'm not sure where I can put them so that they're recognized by the plug-in.</p> <p>I've tried contacting the developers and got no response, so I'm turning to SO. Is there anything I can do, or is the plug-in packaged incorrectly?</p> <p>Update: Apparently the error is in the Activator, not the plugin itself. I tried importing the plugin as a source project, but the src/ directory is empty. The plugin doesn't appear in the list of available deployable plugins when I try to export it. So this is still unsolved.</p>
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    1. USKelly Ellis
    1. USKelly Ellis
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      1. POHow do I resolve a dependency in an Eclipse plug-in I didn't write?
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    1. COThe recommended method of manually adding a plug-in from Eclipse 3.4 onwards is to drop it into the dropins directory inside Eclipse. You might find adding plug-ins to the eclipse/plugins has no effect (this is because p2 is responsible for the eclipse/plugins directory).
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      1. POHow do I resolve a dependency in an Eclipse plug-in I didn't write?
      1. USSteveD
    2. COActually, putting it in the dropins directory didn't work, because it's an extension to a plug-in I've already installed (through the Eclipse UI), which is in the plugins directory. But for most other cases, yes - dropins is the way to go. I've become sidetracked on something else (so it goes) so I haven't tried Rich's solution yet, but will report back when I do!
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      1. POHow do I resolve a dependency in an Eclipse plug-in I didn't write?
      1. USKelly Ellis
 

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