BESCommand.h

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00001 // BESCommand.h
00002 
00003 // This file is part of bes, A C++ back-end server implementation framework
00004 // for the OPeNDAP Data Access Protocol.
00005 
00006 // Copyright (c) 2004,2005 University Corporation for Atmospheric Research
00007 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
00008 //
00009 // This library is free software; you can redistribute it and/or
00010 // modify it under the terms of the GNU Lesser General Public
00011 // License as published by the Free Software Foundation; either
00012 // version 2.1 of the License, or (at your option) any later version.
00013 // 
00014 // This library is distributed in the hope that it will be useful,
00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 // Lesser General Public License for more details.
00018 // 
00019 // You should have received a copy of the GNU Lesser General Public
00020 // License along with this library; if not, write to the Free Software
00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 //
00023 // You can contact University Corporation for Atmospheric Research at
00024 // 3080 Center Green Drive, Boulder, CO 80301
00025  
00026 // (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
00027 // Please read the full copyright statement in the file COPYRIGHT_UCAR.
00028 //
00029 // Authors:
00030 //      pwest       Patrick West <pwest@ucar.edu>
00031 //      jgarcia     Jose Garcia <jgarcia@ucar.edu>
00032 
00033 #ifndef A_BESCommand_h
00034 #define A_BESCommand_h 1
00035 
00036 #include <string>
00037 #include <map>
00038 
00039 using std::string ;
00040 using std::map ;
00041 
00042 #include "BESObj.h"
00043 #include "BESDataHandlerInterface.h"
00044 
00045 class BESResponseHandler ;
00046 class BESTokenizer ;
00047 
00048 class BESCommand : public BESObj
00049 {
00050 private:
00051     static map< string, BESCommand * > cmd_list ;
00052     typedef map< string, BESCommand * >::iterator cmd_iter ;
00053 protected:
00054     string                      _cmd ;
00055 public:
00056                                 BESCommand( const string &cmd )
00057                                     : _cmd( cmd ) {}
00058     virtual                     ~BESCommand() {}
00059 
00060     virtual string              parse_options( BESTokenizer &tokens,
00061                                           BESDataHandlerInterface &dhi ) ;
00062 
00063     virtual BESResponseHandler *parse_request( BESTokenizer &tokens,
00064                                            BESDataHandlerInterface &dhi ) = 0 ;
00065 
00066     virtual void                dump( ostream &strm ) const ;
00067 
00068     static BESCommand *         TermCommand ;
00069     static void                 add_command( const string &cmd_str,
00070                                              BESCommand *cmd ) ;
00071     static bool                 del_command( const string &cmd_str ) ;
00072     static BESCommand *         find_command( const string &cmd_str ) ;
00073 } ;
00074 
00075 #endif // A_BESCommand_h
00076 

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