OPeNDAP Hyrax Back End Server (BES)
Updated for version 3.8.3
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00001 // BESDataDDXResponseHandler.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 "BESDataDDXResponseHandler.h" 00034 #include "BESDataDDSResponse.h" 00035 #include "BESRequestHandlerList.h" 00036 #include "BESDapNames.h" 00037 #include "BESDataNames.h" 00038 #include "BESDapTransmit.h" 00039 00040 #include "BESDebug.h" 00041 00042 BESDataDDXResponseHandler::BESDataDDXResponseHandler( const string &name ) 00043 : BESResponseHandler( name ) 00044 { 00045 } 00046 00047 BESDataDDXResponseHandler::~BESDataDDXResponseHandler( ) 00048 { 00049 } 00050 00065 void 00066 BESDataDDXResponseHandler::execute( BESDataHandlerInterface &dhi ) 00067 { 00068 BESDEBUG( "dap", "Entering BESDataDDXResponseHandler::execute" << endl ) ; 00069 00070 dhi.action_name = DATADDX_RESPONSE_STR ; 00071 // Create the DDS. 00072 // NOTE: It is the responsibility of the specific request handler to set 00073 // the BaseTypeFactory. It is set to NULL here 00074 DataDDS *dds = new DataDDS( NULL, "virtual" ) ; 00075 BESDataDDSResponse *bdds = new BESDataDDSResponse( dds ) ; 00076 _response = bdds ; 00077 00078 // we're actually going to get the data response, it just gets 00079 // displayed as a DataDDX 00080 _response_name = DATA_RESPONSE ; 00081 dhi.action = DATA_RESPONSE ; 00082 00083 // Read keywords from the CE and use those to set the DAP version; maybe 00084 // other things. If the dap version(s) are not included in the CE using 00085 // keywords, then see if anything was sent in the Request headers (which 00086 // the OLFS will parse); the BES includes that info in the BESDapResponse 00087 // object. 00088 00089 // Set the DAP protocol version requested by the client. 2/25/11 jhrg 00090 00091 dhi.first_container(); 00092 BESDEBUG("version", "Initial CE: " << dhi.container->get_constraint() << endl); 00093 dhi.container->set_constraint(dds->get_keywords().parse_keywords(dhi.container->get_constraint())); 00094 BESDEBUG("version", "CE after keyword processing: " << dhi.container->get_constraint() << endl); 00095 00096 dhi.data[POST_CONSTRAINT] = dds->get_keywords().parse_keywords(dhi.data[POST_CONSTRAINT]); 00097 if (dds->get_keywords().has_keyword("dap")) { 00098 dds->set_dap_version(dds->get_keywords().get_keyword_value("dap")); 00099 } 00100 else if (!bdds->get_dap_client_protocol().empty()) { 00101 dds->set_dap_version( bdds->get_dap_client_protocol() ) ; 00102 } 00103 00104 dds->set_request_xml_base( bdds->get_request_xml_base() ); 00105 00106 BESRequestHandlerList::TheList()->execute_each( dhi ) ; 00107 00108 // we've got what we want, now set the action back to data ddx 00109 dhi.action = DATADDX_RESPONSE ; 00110 _response = bdds ; 00111 00112 BESDEBUG( "dap", "Leaving BESDataDDXResponseHandler::execute" << endl ) ; 00113 } 00114 00127 void 00128 BESDataDDXResponseHandler::transmit( BESTransmitter * transmitter, 00129 BESDataHandlerInterface & dhi ) 00130 { 00131 if( _response ) 00132 { 00133 transmitter->send_response( DATADDX_SERVICE, _response, dhi ) ; 00134 } 00135 } 00136 00143 void 00144 BESDataDDXResponseHandler::dump( ostream &strm ) const 00145 { 00146 strm << BESIndent::LMarg << "BESDataDDXResponseHandler::dump - (" 00147 << (void *)this << ")" << endl ; 00148 BESIndent::Indent() ; 00149 BESResponseHandler::dump( strm ) ; 00150 BESIndent::UnIndent() ; 00151 } 00152 00153 BESResponseHandler * 00154 BESDataDDXResponseHandler::DataDDXResponseBuilder( const string &name ) 00155 { 00156 return new BESDataDDXResponseHandler( name ) ; 00157 } 00158