OPeNDAP Hyrax Back End Server (BES)  Updated for version 3.8.3
BESDataResponseHandler.cc
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00001 // BESDataResponseHandler.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 "BESDataResponseHandler.h"
00034 #include "BESDataDDSResponse.h"
00035 #include "BESRequestHandlerList.h"
00036 #include "BESDapNames.h"
00037 #include "BESDataNames.h"
00038 #include "BESDapTransmit.h"
00039 #include "BESDebug.h"
00040 
00041 BESDataResponseHandler::BESDataResponseHandler( const string &name )
00042     : BESResponseHandler( name )
00043 {
00044 }
00045 
00046 BESDataResponseHandler::~BESDataResponseHandler( )
00047 {
00048 }
00049 
00064 void
00065 BESDataResponseHandler::execute( BESDataHandlerInterface &dhi )
00066 {
00067     dhi.action_name = DATA_RESPONSE_STR ;
00068     // NOTE: It is the responsibility of the specific request handler to set
00069     // the BaseTypeFactory. It is set to NULL here
00070     DataDDS *dds = new DataDDS( NULL, "virtual" ) ;
00071     BESDataDDSResponse *bdds = new BESDataDDSResponse( dds ) ;
00072 
00073     // Set the DAP protocol version requested by the client. 2/25/11 jhrg
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 
00102 void
00103 BESDataResponseHandler::transmit( BESTransmitter *transmitter,
00104                                   BESDataHandlerInterface &dhi )
00105 {
00106     if( _response )
00107     {
00108         transmitter->send_response( DATA_SERVICE, _response, dhi ) ;
00109     }
00110 }
00111 
00118 void
00119 BESDataResponseHandler::dump( ostream &strm ) const
00120 {
00121     strm << BESIndent::LMarg << "BESDataResponseHandler::dump - ("
00122                              << (void *)this << ")" << endl ;
00123     BESIndent::Indent() ;
00124     BESResponseHandler::dump( strm ) ;
00125     BESIndent::UnIndent() ;
00126 }
00127 
00128 BESResponseHandler *
00129 BESDataResponseHandler::DataResponseBuilder( const string &name )
00130 {
00131     return new BESDataResponseHandler( name ) ;
00132 }
00133