[xwiki-users] NullPointerExcept when searching an existing attachment with no right to view

In my xwiki.log file, I see many NullPointExcept. One of them is related to the lucene search on an existing attachment when the user has no right to view it. For example, I attached a sunset.jpg in a privileged space, after logged out, and do a search with keyword "sunset.jpg", then NullPointException throws in the xwiki logs. While there is no error shows on the lucene result page, it is fairly annoying to see non-sense errors in the logs. Does anyone have an idea to fix it? 2010-07-28 12:53:33,095 [<Site>/xwiki/bin/view/Main/Search?text=sunset.jpg&space=] [<Site>/xwiki/bin/view/Main/Search?text=sunset.jpg&space=] ERROR lucene.SearchResults - Error getting search result java.lang.NullPointerException at com.xpn.xwiki.plugin.lucene.SearchResult.<init>(SearchResult.java:99) at com.xpn.xwiki.plugin.lucene.SearchResults.getRelevantResults(SearchResults.java:72) at com.xpn.xwiki.plugin.lucene.SearchResults.getHitcount(SearchResults.java:229) at sun.reflect.GeneratedMethodAccessor477.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) ....... Cheers, Wesley