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I am having trouble to get the LYO OSLC workshop running. In Lab1, I cannot run the project through maven. Please give me some input.

Software:
Windows 8.1 64bit
Java 8
Eclipse Luna Service Release 1a (4.4.1)
M2E - Maven integration fer Eclipse 1.5.0.20140606-0033
EGit 3.6.2.201501210735-r
those should be the most important ones.

I followed the ..\org.eclipse.lyo.docs\Lab1\Lyo_OSLC_Workshop.pdf workshop [you can find it on the Lyo Eclipse website in OSLCWorkshop under "Getting started with the Workshop"] until page 10. When clicking "run" I get the following errors:

[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for org.eclipse.lyo.oslc4j.rio:oslc4j-bugzilla-sample-lab1:war:0.0.1-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for org.mortbay.jetty:jetty-maven-plugin is missing. @ line 91, column 11
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING] 
[INFO] 
[INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building oslc4j-bugzilla-sample-lab1 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] >>> jetty-maven-plugin:8.1.16.v20140903:run (default-cli) @ oslc4j-bugzilla-sample-lab1 >>>
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.517 s
[INFO] Finished at: 2015-01-25T17:44:24+01:00
[INFO] Final Memory: 7M/243M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project oslc4j-bugzilla-sample-lab1: Could not resolve dependencies for project org.eclipse.lyo.oslc4j.rio:oslc4j-bugzilla-sample-lab1:war:0.0.1-SNAPSHOT: Failed to collect dependencies at org.eclipse.lyo.server:oauth-webapp:war:[0.0.1-SNAPSHOT,): No versions available for org.eclipse.lyo.server:oauth-webapp:war:[0.0.1-SNAPSHOT,) within specified range -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

I read here stackoverflow.com/questions/10426557/missing-maven-plugin-jetty to have to change pom.xml. the original settings were:

  <build>
    <finalName>oslc4j-bugzilla-sample</finalName>
        <plugins>

        <plugin>
            <groupId>org.mortbay.jetty</groupId>
            <artifactId>jetty-maven-plugin</artifactId>
            <!--  <version>7.3.0.v20110203</version> -->

now I have it this way:

<build>
    <finalName>oslc4j-bugzilla-sample</finalName>
        <plugins>

        <plugin>
            <groupId>org.mortbay.jetty</groupId>
            <artifactId>mvn org.mortbay.jetty:jetty-maven-plugin:run</artifactId>
             <version>9.2.7.v20150116</version>

The version corresponds to C:\Users\munk\Downloads\jetty-distribution-9.2.7.v20150116\jetty-distribution-9.2.7.v20150116\demo-base where I can start the web server from.

When I "run" again I get this output:

[INFO] Scanning for projects...
[WARNING] Failed to normalize pathname for lock on C:\Users\munk\.m2\repository\.locks\org.mortbay.jetty~mvn org.mortbay.jetty:jetty-maven-plugin:run~9.2.7.v20150116: java.io.IOException: Die Syntax für den Dateinamen, Verzeichnisnamen oder die Datenträgerbezeichnung ist falsch
[WARNING] Failed to lock file C:\Users\munk\.m2\repository\.locks\org.mortbay.jetty~mvn org.mortbay.jetty:jetty-maven-plugin:run~9.2.7.v20150116: java.io.FileNotFoundException: C:\Users\munk\.m2\repository\.locks\org.mortbay.jetty~mvn org.mortbay.jetty:jetty-maven-plugin:run~9.2.7.v20150116.aetherlock (Die Syntax für den Dateinamen, Verzeichnisnamen oder die Datenträgerbezeichnung ist falsch)
[WARNING] Failed to canonicalize path C:\Users\munk\.m2\repository\org\mortbay\jetty\mvn org.mortbay.jetty:jetty-maven-plugin:run\9.2.7.v20150116\mvn org.mortbay.jetty:jetty-maven-plugin:run-9.2.7.v20150116.pom.lastUpdated: Die Syntax für den Dateinamen, Verzeichnisnamen oder die Datenträgerbezeichnung ist falsch
[INFO] Downloading: repo.maven.apache.org/maven2/org/mortbay/jetty/mvn org.mortbay.jetty:jetty-maven-plugin:run/9.2.7.v20150116/mvn org.mortbay.jetty:jetty-maven-plugin:run-9.2.7.v20150116.pom
[WARNING] Failed to canonicalize path C:\Users\munk\.m2\repository\org\mortbay\jetty\mvn org.mortbay.jetty:jetty-maven-plugin:run\9.2.7.v20150116\mvn org.mortbay.jetty:jetty-maven-plugin:run-9.2.7.v20150116.pom.lastUpdated: Die Syntax für den Dateinamen, Verzeichnisnamen oder die Datenträgerbezeichnung ist falsch
[WARNING] Failed to create parent directories for tracking file C:\Users\munk\.m2\repository\org\mortbay\jetty\mvn org.mortbay.jetty:jetty-maven-plugin:run\9.2.7.v20150116\mvn org.mortbay.jetty:jetty-maven-plugin:run-9.2.7.v20150116.pom.lastUpdated
[WARNING] Failed to retrieve plugin descriptor for org.mortbay.jetty:mvn org.mortbay.jetty:jetty-maven-plugin:run:9.2.7.v20150116: Plugin org.mortbay.jetty:mvn org.mortbay.jetty:jetty-maven-plugin:run:9.2.7.v20150116 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.mortbay.jetty:mvn org.mortbay.jetty:jetty-maven-plugin:run:jar:9.2.7.v20150116
[INFO] Downloading: repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml
[INFO] Downloading: repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml
[INFO] Downloaded: repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-metadata.xml (13 KB at 47.1 KB/sec)
[INFO] Downloaded: repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metadata.xml (20 KB at 72.5 KB/sec)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.733 s
[INFO] Finished at: 2015-01-25T17:09:15+01:00
[INFO] Final Memory: 10M/307M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'jetty' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (C:\Users\munk\.m2\repository), central (repo.maven.apache.org/maven2)] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundForPrefixException

The URL at tthe end does not exist and I cannot get through to build this Lab1 properly. As far as I understand it, the "jetty" plugin is part of Maven but I cannot find it inside maven, so what to do?

I guess now I have to tell Eclipse in the Eclipse runtime configuration "Run Configuration" where to find this jetty dir but I have no idea where exactly and how. It is not mentioned in the PDF file, nor in the other guides that I found so far. So please tell me what are my faults here, and how can I do it right?

Due to the rigid rules towards newbies here not posting more than 2 links I had to remove all http preambles from code. Please add them on your own if you need to follow the links. Thank you.

munk
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1 Answers1

2

this might be a bit late but I tried to run the Lyo/OSLCWorkshop today and ran into a similar problem. I have the same setup as you and I think I have gotten the same error message while trying to run the Lab1 project.

First I followed these steps to set up the environment: http://wiki.eclipse.org/Lyo/OSLCWorkshop

Second I tried to run Lab1 as stated attached pdf-file and got the error message that maven is unable to find the org.eclipse.lyo.oslc4j and org.eclipse.lyo.server projects in my local repository. Thus I tried to build the projects by hand using Run as -> Maven install in eclipse.

After that I found out that Maven was unable to build the projects due to errors in the JavaDoc statements thus failing to launch the Lab1 project.

I than corrected all the errors that Maven provided. There are three kinds of errors I discovered.

  1. The mail address included with the @author tag was incorrect so I changed it from: <name@mail.com> to {@literal (name@mail.com)}.

  2. The author used the @see annotation to link two methods together which caused problems. I just removed the lines of documentation in those cases.

  3. In one case there where exceptions marked with the @throws annotation. The problem here was that the annotations where not in the correct order as given in the code and the wrong exception types where annotated. I put them into the right order and fixed the names.

There where several other issues with @param where either the names did not match or text was missing in the documentation but I think those where mostly warnings.

Build each project by hand and fix all the errors inside the documentation given by Maven. After that the Lab1 project should start.

I assume the problems stem from Java8 being picky with JavaDoc annotations. The Lyo projects where build with Java6 so there everything was ok. I figured two other possible solutions would be to point maven to a Java 1-6 SDK (via the JAVA_HOME environment variable) or skip the JavaDoc while building but I haven't tested those.

Hope that helps.

Scyla101
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