Configured build extension listener to only fire on poms within the build.

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@718176 13f79535-47bb-0310-9956-ffa450edef68

maven-project/src/main/java/org/apache/maven/project/builder/PomClassicDomainModel.java

@@ -143,7 +143,7 @@ public final class PomClassicDomainModel
 
     public boolean isPomInBuild()
     {
-        return projectDirectory != null;
+        return projectDirectory != null && new File(projectDirectory, "pom.xml").exists();
     }
 
     /**

maven-project/src/main/java/org/apache/maven/project/builder/impl/DefaultProjectBuilder.java

@@ -176,7 +176,8 @@ public final class DefaultProjectBuilder
                                                                                                 transformer,
                                                                                                 importModels,
                                                                                                 properties,
-                                                                                                Arrays.asList((ModelEventListener) new BuildExtensionListener())) );
+                                                                                                Arrays.asList((ModelEventListener)
+                                                                                                        new BuildExtensionListener(domainModel.isPomInBuild()))) );
         try
         {
             MavenProject mavenProject = new MavenProject( transformedDomainModel.getModel(), artifactFactory,

maven-project/src/main/java/org/apache/maven/project/builder/listeners/BuildExtensionListener.java

@@ -16,8 +16,19 @@ import java.util.ArrayList;
 public class BuildExtensionListener
     implements ModelEventListener
 {
+    private boolean inBuild;
+
+    public BuildExtensionListener(boolean inBuild)
+    {
+        this.inBuild = inBuild;
+    }
+
     public void fire( List<ModelContainer> modelContainers )
     {
+        if(!inBuild) {
+            return;
+        }
+        
         List<BuildExtension> buildExtensions = new ArrayList<BuildExtension>();
         for ( ModelContainer mc : modelContainers )
         {