added validation to SimpleRepositoryConfig

plugins/scm-hg-plugin/src/main/java/sonia/scm/repository/HgConfig.java

@@ -33,6 +33,10 @@
 
 package sonia.scm.repository;
 
+//~--- non-JDK imports --------------------------------------------------------
+
+import sonia.scm.util.Util;
+
 //~--- JDK imports ------------------------------------------------------------
 
 import javax.xml.bind.annotation.XmlRootElement;
@@ -75,6 +79,19 @@ public class HgConfig extends SimpleRepositoryConfig
     return pythonBinary;
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  @Override
+  public boolean isValid()
+  {
+    return super.isValid() && Util.isNotEmpty(hgBinary)
+           && Util.isNotEmpty(pythonBinary);
+  }
+
   //~--- set methods ----------------------------------------------------------
 
   /**

scm-core/src/main/java/sonia/scm/repository/AbstractRepositoryHandler.java

@@ -193,7 +193,7 @@ public abstract class AbstractRepositoryHandler<C extends SimpleRepositoryConfig
   @Override
   public boolean isConfigured()
   {
-    return config != null;
+    return (config != null) && config.isValid();
   }
 
   //~--- set methods ----------------------------------------------------------

scm-core/src/main/java/sonia/scm/repository/SimpleRepositoryConfig.java

@@ -29,8 +29,14 @@
  *
  */
 
+
+
 package sonia.scm.repository;
 
+//~--- non-JDK imports --------------------------------------------------------
+
+import sonia.scm.Validateable;
+
 //~--- JDK imports ------------------------------------------------------------
 
 import java.io.File;
@@ -39,7 +45,7 @@ import java.io.File;
  *
  * @author Sebastian Sdorra
  */
-public class SimpleRepositoryConfig
+public class SimpleRepositoryConfig implements Validateable
 {
 
   /**
@@ -53,6 +59,18 @@ public class SimpleRepositoryConfig
     return repositoryDirectory;
   }
 
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  @Override
+  public boolean isValid()
+  {
+    return repositoryDirectory != null;
+  }
+
   //~--- set methods ----------------------------------------------------------
 
   /**