Add UserRoleDetail

and return it from getRolesForUser()

Author: komamitsu

core/src/main/java/com/scalar/db/api/AuthAdmin.java

@@ -214,7 +214,7 @@ default List<RoleDetail> getRoles() throws ExecutionException {
    * @return a list of {@link RoleDetail}s for the given user
    * @throws ExecutionException if the operation fails
    */
-  default List<RoleDetail> getRolesForUser(String username) throws ExecutionException {
+  default List<UserRoleDetail> getRolesForUser(String username) throws ExecutionException {
     throw new UnsupportedOperationException(CoreError.AUTH_NOT_ENABLED.buildMessage());
   }
 
@@ -412,6 +412,10 @@ interface RoleDetail {
     List<RoleHierarchy> getRoleHierarchies();
   }
 
+  interface UserRoleDetail extends RoleDetail {
+    boolean hasAdminOptionOnUser();
+  }
+
   /** Represents a user-role assignment */
   interface UserRole {
     String getUsername();

core/src/main/java/com/scalar/db/common/DecoratedDistributedTransactionAdmin.java

@@ -399,7 +399,7 @@ public List<RoleDetail> getRoles() throws ExecutionException {
   }
 
   @Override
-  public List<RoleDetail> getRolesForUser(String username) throws ExecutionException {
+  public List<UserRoleDetail> getRolesForUser(String username) throws ExecutionException {
     return distributedTransactionAdmin.getRolesForUser(username);
   }