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POMaven missing transitive dependency
 

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    <p>I have a maven project with a dependency (datanucleus-db4o). This dependency has itself a dependency on db4o (db4o:db4o:jar:7.12.126.14142-all-java5). </p> <p>Now maven says: </p> <pre><code>09.09.10 19:43:09 MESZ: Missing artifact db4o:db4o:jar:7.12.126.14142-all-java5:compile </code></pre> <p>I am new to maven. Is it right that datanucleus-db4o defines its own dependency with a specific version number? Is this a good way? m2eclipse can't download it. I downloaded a newer Version of db4o and added it to the classpath. Maven keeps writing about the missing artifact.</p> <p>Also I've got NoClassDefFound errors when I launch my application. This leads me to the other question:</p> <p>Am I doing something wrong?</p> <p>Thanks in advance.</p> <p>Here is the relevant part of the pom.xml...</p> <pre><code>&lt;dependency&gt; &lt;groupId&gt;org.datanucleus&lt;/groupId&gt; &lt;artifactId&gt;datanucleus-core&lt;/artifactId&gt; &lt;version&gt;2.2.0-m1&lt;/version&gt; &lt;type&gt;jar&lt;/type&gt; &lt;scope&gt;runtime&lt;/scope&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.datanucleus&lt;/groupId&gt; &lt;artifactId&gt;datanucleus-db4o&lt;/artifactId&gt; &lt;version&gt;2.1.1&lt;/version&gt; &lt;type&gt;jar&lt;/type&gt; &lt;scope&gt;compile&lt;/scope&gt; &lt;/dependency&gt; </code></pre> <p>and here is the relevant part of the pom.xml of </p> <pre><code>&lt;dependency&gt; &lt;groupId&gt;db4o&lt;/groupId&gt; &lt;artifactId&gt;db4o&lt;/artifactId&gt; &lt;version&gt;7.12.126.14142-all-java5&lt;/version&gt; &lt;/dependency&gt; </code></pre>
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