title: Maven Project: Failed to read artifact descriptor
body: <p>I have cloned the git repository from <a href="https://github.com/viatra/org.eclipse.viatra.examples" rel="nofollow noreferrer">https://github.com/viatra/org.eclipse.viatra.examples</a>
  and imported the project incquery-demo-generic (located in /query/headless-maven) as a Maven Project in Eclipse. Unfortunately I get the following error when I open the project's pom.xml:</p>
  
  <p><a href="https://i.stack.imgur.com/FP2CL.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FP2CL.png" alt="enter image description here"></a></p>
  
  <p>Furthermore everytime when I click on "Run As" -> "Maven install" or "Maven build..." I get the following error message in the console:</p>
  
  <blockquote>
    <p>Failed to execute goal on project incquery-demo-generic: Could not resolve dependencies for project hu.bme.mit.incquery:incquery-demo-generic:jar:0.0.1-SNAPSHOT: Failed to collect dependencies at org.eclipse.incquery:runtime:jar:0.8.0-SNAPSHOT: Failed to read artifact descriptor for org.eclipse.incquery:runtime:jar:0.8.0-SNAPSHOT: Failure to find org.eclipse.incquery:org.eclipse.incquery.parent:pom:0.8.0-SNAPSHOT in <a href="https://repo.eclipse.org/content/repositories/emf-incquery-snapshots/" rel="nofollow noreferrer">https://repo.eclipse.org/content/repositories/emf-incquery-snapshots/</a> was cached in the local repository, resolution will not be reattempted until the update interval of incquery-snapshot has elapsed or updates are forced -> [Help 1]
    Blockquote</p>
  </blockquote>
  
  <p>In the Maven Dependencies Folder I can find some, but not all necessary jar files.</p>
  
  <p>I have tried "Project clean", "Maven update", "Maven build... (Goal: clean package)" and to delete the .m2 repository and to re-build the maven project, but nothing helps.</p>
  
  <p>I also tried to download some dependencies as .jar files and add them to the build-path, but they contain nothing but pom.xml and properties-files themself, thus I keep getting "cannot be resolved to a type" errors in relevant parts of the Java src-code. </p>
  
  <p>Can somebody successfully run this project in her/his eclipse? </p>
  
  <p>I am not an expert on Maven Projects so please tell me what to do in "layman words".</p>
  
  <p>Thanks &amp; kind regards,
  MCRaven</p>