added some javadoc

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

@@ -42,6 +42,9 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
+ * Injection provider for {@link HgContext}.
+ * This provider returns an instance {@link HgContext} from request scope, if no {@link HgContext} could be found in
+ * request scope (mostly because the scope is not available) a new {@link HgContext} gets returned.
  *
  * @author Sebastian Sdorra
  */

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

@@ -2,10 +2,13 @@ package sonia.scm.repository;
 
 import com.google.inject.servlet.RequestScoped;
 
+/**
+ * Holds an instance of {@link HgContext} in the request scope.
+ */
 @RequestScoped
 public class HgContextRequestStore {
 
-  private HgContext context = new HgContext();
+  private final HgContext context = new HgContext();
 
   public HgContext get() {
     return context;