src/main/java/org/jboss/util/property/PropertyGroup.java
@SuppressWarnings("unchecked")
   public Set entrySet()
   {
      final Set superSet = super.entrySet(true);

      return new java.util.AbstractSet()
      {
         private boolean isInGroup(Map.Entry entry)
         {
            String key = (String) entry.getKey();
            return key.startsWith(basename);
         }

         public int size()
         {
            Iterator iter = superSet.iterator();
            int count = 0;
            while (iter.hasNext())
            {
               Map.Entry entry = (Map.Entry) iter.next();
               if (isInGroup(entry))
               {
                  count++;
               }
            }

            return count;
         }

         public Iterator iterator()
         {
            return new Iterator()
            {
               private Iterator iter = superSet.iterator();

               private Object next;

               public boolean hasNext()
               {
                  if (next != null)
                     return true;

                  while (next == null)
                  {
                     if (iter.hasNext())
                     {
                        Map.Entry entry = (Map.Entry) iter.next();
                        if (isInGroup(entry))
                        {
                           next = entry;
                           return true;
                        }
                     }
                     else
                     {
                        break;
                     }
                  }

                  return false;
               }

               public Object next()
               {
                  if (next == null)
                     throw new java.util.NoSuchElementException();

                  Object obj = next;
                  next = null;

                  return obj;
               }

               public void remove()
               {
                  iter.remove();
               }
            };
         }
      };
   }
@SuppressWarnings("unchecked")
   public Set entrySet()
   {
      final Set superSet = super.entrySet(true);

      return new java.util.AbstractSet()
      {
         private boolean isInGroup(Map.Entry entry)
         {
            String key = (String) entry.getKey();
            return key.startsWith(basename);
         }

         public int size()
         {
            Iterator iter = superSet.iterator();
            int count = 0;
            while (iter.hasNext())
            {
               Map.Entry entry = (Map.Entry) iter.next();
               if (isInGroup(entry))
               {
                  count++;
               }
            }

            return count;
         }

         public Iterator iterator()
         {
            return new Iterator()
            {
               private Iterator iter = superSet.iterator();

               private Object next;

               public boolean hasNext()
               {
                  if (next != null)
                     return true;

                  while (next == null)
                  {
                     if (iter.hasNext())
                     {
                        Map.Entry entry = (Map.Entry) iter.next();
                        if (isInGroup(entry))
                        {
                           next = entry;
                           return true;
                        }
                     }
                     else
                     {
                        break;
                     }
                  }

                  return false;
               }

               public Object next()
               {
                  if (next == null)
                     throw new java.util.NoSuchElementException();

                  Object obj = next;
                  next = null;

                  return obj;
               }

               public void remove()
               {
                  iter.remove();
               }
            };
         }
      };
   }
Returns an entry set for all properties in this group.

<p>
This is currently ver inefficient, but should get the
job done for now.