protected ItemData getCachedItemData(String identifier) throws RepositoryException
   {
      return cache.isEnabled() ? cache.get(identifier) : null;
   }
protected ItemData getCachedItemData ( String identifier ) throws RepositoryException { return cache . isEnabled ( ) ? cache . get ( identifier ) : null ; }
Returns an item from cache by Identifier or null if the item don't cached.

@param identifier
Item id
@return ItemData
@throws RepositoryException
error