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POjava.lang.NullPointerException executing accelo with maven
 

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  1. POjava.lang.NullPointerException executing accelo with maven
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    <p>I am trying to execute the acceleo project using maven. here is the pom configuration:</p> <h2>pom.xml</h2> <pre class="lang-xml prettyprint-override"><code>&lt;plugin&gt; &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt; &lt;artifactId&gt;exec-maven-plugin&lt;/artifactId&gt; &lt;version&gt;1.2.1&lt;/version&gt; &lt;configuration&gt; &lt;mainClass&gt;src.AcceleoProject.files.Generate&lt;/mainClass&gt; &lt;arguments&gt; &lt;argument&gt;/${project.basedir}/src/main/java/src/AcceleoProject/files/model.uml&lt;/argument&gt; &lt;argument&gt;/${project.basedir}/src/main/java/src/AcceleoProject/files/out&lt;/argument&gt; &lt;/arguments&gt; &lt;/configuration&gt; &lt;/plugin&gt; </code></pre> <h2>Error</h2> <p>When I execute the pom I get the following error:</p> <pre><code>java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.NullPointerException at org.eclipse.core.internal.runtime.InternalPlatform.getBundle(InternalPlatform.java:861) at org.eclipse.core.runtime.Platform.getBundle(Platform.java:1185) at org.eclipse.acceleo.common.internal.utils.workspace.BundleURLConverter.resolveBundle(BundleURLConverter.java:186) at org.eclipse.acceleo.common.internal.utils.workspace.BundleURLConverter.resolveAsPlatformPlugin(BundleURLConverter.java:137) at org.eclipse.acceleo.engine.internal.environment.AcceleoEvaluationEnvironment.loadDynamicModules(AcceleoEvaluationEnvironment.java:763) at org.eclipse.acceleo.engine.internal.environment.AcceleoEvaluationEnvironment.mapDynamicOverrides(AcceleoEvaluationEnvironment.java:899) at org.eclipse.acceleo.engine.internal.environment.AcceleoEvaluationEnvironment.&lt;init&gt;(AcceleoEvaluationEnvironment.java:139) at org.eclipse.acceleo.engine.internal.environment.AcceleoEnvironmentFactory.createEvaluationEnvironment(AcceleoEnvironmentFactory.java:124) at org.eclipse.ocl.internal.evaluation.QueryImpl.getEvaluationEnvironment(QueryImpl.java:286) at org.eclipse.ocl.ecore.QueryImpl.getEvaluationEnvironment(QueryImpl.java:74) at org.eclipse.acceleo.engine.generation.AcceleoEngine.doEvaluate(AcceleoEngine.java:268) at org.eclipse.acceleo.engine.generation.AcceleoEngine.evaluate(AcceleoEngine.java:145) at org.eclipse.acceleo.engine.service.AcceleoService.doGenerateTemplate(AcceleoService.java:869) at org.eclipse.acceleo.engine.service.AcceleoService.doGenerate(AcceleoService.java:575) at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.generate(AbstractAcceleoGenerator.java:188) at org.eclipse.acceleo.engine.service.AbstractAcceleoGenerator.doGenerate(AbstractAcceleoGenerator.java:158) at src.AcceleoProject.files.Generate.doGenerate(Generate.java:197) at src.AcceleoProject.files.Generate.main(Generate.java:159) ... 6 more </code></pre> <p>I think its related with the output file where i want to generate my files. Anyone has an idea about this? Thank you in advance.</p>
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    1. COI'm not an Acceleo expert, but your structure seems to be quite strange : /${project.basedir}/src/main/java/src/AcceleoProject/files/model.uml, it should be in src/main/resources (at least) or in an extra location ? Did you had a look here : http://wiki.eclipse.org/Acceleo/Maven
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    2. COWhich version of Acceleo are you using?
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