OPeNDAP Hyrax Back End Server (BES)  Updated for version 3.8.3
BESDDSResponseHandler.cc
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00001 // BESDDSResponseHandler.cc
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 #include "BESDDSResponseHandler.h"
00034 #include "BESDDSResponse.h"
00035 #include "BESRequestHandlerList.h"
00036 #include "BESDapNames.h"
00037 #include "BESDataNames.h"
00038 #include "BESDapTransmit.h"
00039 
00040 #include "BESDebug.h"
00041 
00042 BESDDSResponseHandler::BESDDSResponseHandler( const string &name )
00043     : BESResponseHandler( name )
00044 {
00045 }
00046 
00047 BESDDSResponseHandler::~BESDDSResponseHandler( )
00048 {
00049 }
00050 
00064 void
00065 BESDDSResponseHandler::execute( BESDataHandlerInterface &dhi )
00066 {
00067     // NOTE: It is the responsibility of the specific request handler to set
00068     // the BaseTypeFactory. It is set to NULL here
00069     dhi.action_name = DDS_RESPONSE_STR ;
00070     DDS *dds = new DDS( NULL, "virtual" ) ;
00071     BESDDSResponse *bdds = new BESDDSResponse( dds ) ;
00072 
00073     // Set the DAP protocol version requested by the client
00074 
00075     dhi.first_container();
00076     BESDEBUG("version", "Initial CE: " << dhi.container->get_constraint() << endl);
00077     dhi.container->set_constraint(dds->get_keywords().parse_keywords(dhi.container->get_constraint()));
00078     BESDEBUG("version", "CE after keyword processing: " << dhi.container->get_constraint() << endl);
00079 
00080     if (dds->get_keywords().has_keyword("dap")) {
00081         dds->set_dap_version(dds->get_keywords().get_keyword_value("dap"));
00082     }
00083     else if (!bdds->get_dap_client_protocol().empty()) {
00084         dds->set_dap_version( bdds->get_dap_client_protocol() ) ;
00085     }
00086 
00087     _response = bdds ;
00088     BESRequestHandlerList::TheList()->execute_each( dhi ) ;
00089 }
00090 
00103 void
00104 BESDDSResponseHandler::transmit( BESTransmitter *transmitter,
00105                               BESDataHandlerInterface &dhi )
00106 {
00107     if( _response )
00108     {
00109         transmitter->send_response( DDS_SERVICE, _response, dhi ) ;
00110     }
00111 }
00112 
00119 void
00120 BESDDSResponseHandler::dump( ostream &strm ) const
00121 {
00122     strm << BESIndent::LMarg << "BESDDSResponseHandler::dump - ("
00123                              << (void *)this << ")" << endl ;
00124     BESIndent::Indent() ;
00125     BESResponseHandler::dump( strm ) ;
00126     BESIndent::UnIndent() ;
00127 }
00128 
00129 BESResponseHandler *
00130 BESDDSResponseHandler::DDSResponseBuilder( const string &name )
00131 {
00132     return new BESDDSResponseHandler( name ) ;
00133 }
00134