[MRM-370] NPE when trying to proxy a request for a plugin

Patch submitted by Jens Mühlenhoff

git-svn-id: https://svn.apache.org/repos/asf/maven/archiva/trunk@547590 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 4 insertions, 1 deletions

diff --git a/archiva-base/archiva-repository-layer/src/main/java/org/apache/maven/archiva/repository/layout/DefaultBidirectionalRepositoryLayout.java b/archiva-base/archiva-repository-layer/src/main/java/org/apache/maven/archiva/repository/layout/DefaultBidirectionalRepositoryLayout.java
index ae309dd52..9cc6f368e 100644
--- a/archiva-base/archiva-repository-layer/src/main/java/org/apache/maven/archiva/repository/layout/DefaultBidirectionalRepositoryLayout.java
+++ b/archiva-base/archiva-repository-layer/src/main/java/org/apache/maven/archiva/repository/layout/DefaultBidirectionalRepositoryLayout.java
@@ -134,7 +134,10 @@ public class DefaultBidirectionalRepositoryLayout
 
         path.append( formatAsDirectory( reference.getGroupId() ) ).append( PATH_SEPARATOR );
         path.append( reference.getArtifactId() ).append( PATH_SEPARATOR );
-        path.append( VersionUtil.getBaseVersion( reference.getVersion() ) ).append( PATH_SEPARATOR );
+        if( reference.getVersion() != null ) {
+            // add the version only if it is present
+            path.append( VersionUtil.getBaseVersion( reference.getVersion() ) ).append( PATH_SEPARATOR );
+        }
         path.append( MAVEN_METADATA );
 
         return path.toString();