[xwiki-devs] [VOTE] Modify XWiki.search() returned result + other methods returning a collection

[Vincent Massol]

Hi,

Since this is an API I'm sending a vote.

I'd like to modify the following:

     public List search(String wheresql) throws XWikiException
     {
         if (hasProgrammingRights())
             return xwiki.search(wheresql, getXWikiContext());
         return null;
     }

To:

     public List search(String wheresql) throws XWikiException
     {
         if (hasProgrammingRights())
             return xwiki.search(wheresql, getXWikiContext());
         return Collections.EMPTY_LIST;
     }

Rationale:

* A method that returns a List (or a Collection in general) should  
never return null but always an empty collection instead (or throw an  
exception).

I also propose to modify the other methods to return empty  
collections instead of null. Those include:

*     public List getDeletedDocuments(String fullname, String lang)  
throws XWikiException
*     public List search(String wheresql, int nb, int start) throws  
XWikiException
*     public List searchDocuments(String wheresql, int nb, int start,  
String selectColumns)

Here's my +1

Thanks
-Vincent

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