OPeNDAP Hyrax Back End Server (BES) Updated for version 3.8.3
BESXMLCommand.h
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00001 // BESXMLCommand.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) 2004-2009 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_BESXMLCommand_h
00034 #define A_BESXMLCommand_h 1
00035 
00036 #include <string>
00037 #include <map>
00038 
00039 using std::string ;
00040 using std::map ;
00041 
00042 #include <libxml/encoding.h>
00043 
00044 #include "BESObj.h"
00045 #include "BESDataHandlerInterface.h"
00046 
00047 class BESResponseHandler ;
00048 class BESXMLCommand ;
00049 typedef BESXMLCommand *(*p_xmlcmd_builder)( const BESDataHandlerInterface &dhi);
00050 
00051 class BESXMLCommand : public BESObj
00052 {
00053 private:
00054     static map< string, p_xmlcmd_builder > cmd_list ;
00055     typedef map< string, p_xmlcmd_builder >::iterator cmd_iter ;
00056 protected:
00057     BESDataHandlerInterface     _dhi ;
00058     virtual void                set_response() ;
00059     string                      _str_cmd ;
00060                                 BESXMLCommand( const BESDataHandlerInterface &base_dhi ) ;
00061 public:
00062     virtual                     ~BESXMLCommand() {}
00063 
00068     virtual void                parse_request( xmlNode *node ) = 0 ;
00074     virtual bool                has_response() = 0 ;
00078     virtual void                prep_request() {}
00087     virtual BESDataHandlerInterface &get_dhi() { return _dhi ; }
00088 
00089     virtual void                dump( ostream &strm ) const ;
00090 
00091     static void                 add_command( const string &cmd_str,
00092                                              p_xmlcmd_builder cmd ) ;
00093     static bool                 del_command( const string &cmd_str ) ;
00094     static p_xmlcmd_builder     find_command( const string &cmd_str ) ;
00095 } ;
00096 
00097 #endif // A_BESXMLCommand_h
00098