Mailinglist Archive: zypp-devel (114 mails)

[Michael Andres <ma@xxxxxxx>]

(In SVN) 

Class Exception now offers a history list of message strings. 
These messages should describe what lead to the exception.

The Exceptions message itself is NOT included in the history.


History access:

    /** Iterator pointing to the most recent message. */
    HistoryIterator historyBegin() const
    { return _history.begin(); }
        
    /** Iterator pointing behind the last message. */
    HistoryIterator historyEnd() const 
    { return _history.end(); }

    /** Whether the history list is empty. */
    bool historyEmpty() const
    { return _history.empty(); }

    /** The size of the history list. */
    HistorySize historySize() const
    { return _history.size(); }


History maintainance:

    /** Store an other Exception as history. */
    void remember( const Exception & old_r );

    /** Add some message text to the history. */
    void addHistory( const std::string & msg_r );


Example:

    Rethrow, remembering an old exception:

        try 
        {
          ....
        }
        catch( const Exception & olderr_r )
        {
           ZYPP_CAUGHT( olderr_r )      
           HighLevelException newerr( "Something failed." );
           newerr.rember( olderr_r );
           ZYPP_THROW( newerr );
        }



    Print exception and history if available:

        Exception error;
        dumpRange( ERR << error << endl,
                   err.historyBegin(), err.historyEnd(),
                   "",
                   "History:\n - ",
                   "\n - ",
                   "\n",
                   "" );


Todo:

Check and adjust existing code to remember previois Exceptions.

-- 

cu,
    Michael Andres

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