BESDataDDXResponseHandler.cc

// BESDataDDXResponseHandler.cc
 
// This file is part of bes, A C++ back-end server implementation framework
// for the OPeNDAP Data Access Protocol.
 
// Copyright (c) 2004-2009 University Corporation for Atmospheric Research
// Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301
 
// (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
// Please read the full copyright statement in the file COPYRIGHT_UCAR.
//
// Authors:
//      pwest       Patrick West <pwest@ucar.edu>
//      jgarcia     Jose Garcia <jgarcia@ucar.edu>
 
#include "config.h"
 
#include <libdap/DataDDS.h>
 
#include "BESDataDDXResponseHandler.h"
#include "BESDataDDSResponse.h"
#include "BESRequestHandlerList.h"
#include "BESDapNames.h"
#include "BESDataNames.h"
#include "BESTransmitter.h"
 
#include "BESDebug.h"
 
using namespace libdap;
using namespace std;
 
BESDataDDXResponseHandler::BESDataDDXResponseHandler( const string &name )
    : BESResponseHandler( name )
{
}
 
BESDataDDXResponseHandler::~BESDataDDXResponseHandler( )
{
}

void
BESDataDDXResponseHandler::execute( BESDataHandlerInterface &dhi )
{
    BESDEBUG( "dap", "Entering BESDataDDXResponseHandler::execute" << endl ) ;
 
    dhi.action_name = DATADDX_RESPONSE_STR ;
    // Create the DDS.
    // NOTE: It is the responsibility of the specific request handler to set
    // the BaseTypeFactory. It is set to NULL here
    DDS *dds = new DDS( NULL, "virtual" ) ;
    BESDataDDSResponse *bdds = new BESDataDDSResponse( dds ) ;
    d_response_object = bdds ;
 
    // we're actually going to get the data response, it just gets
    // displayed as a DataDDX
    d_response_name = DATA_RESPONSE ;
    dhi.action = DATA_RESPONSE ;
 
#if 0
    // Read keywords from the CE and use those to set the DAP version; maybe
    // other things. If the dap version(s) are not included in the CE using
    // keywords, then see if anything was sent in the Request headers (which
    // the OLFS will parse); the BES includes that info in the BESDapResponse
    // object.
 
    // Set the DAP protocol version requested by the client. 2/25/11 jhrg
 
    dhi.first_container();
    BESDEBUG("version", "Initial CE: " << dhi.container->get_constraint() << endl);
    dhi.container->set_constraint(dds->get_keywords().parse_keywords(dhi.container->get_constraint()));
    BESDEBUG("version", "CE after keyword processing: " << dhi.container->get_constraint() << endl);
 
    dhi.data[POST_CONSTRAINT] = dds->get_keywords().parse_keywords(dhi.data[POST_CONSTRAINT]);
    if (dds->get_keywords().has_keyword("dap")) {
        dds->set_dap_version(dds->get_keywords().get_keyword_value("dap"));
    }
    else if (!bdds->get_dap_client_protocol().empty()) {
        dds->set_dap_version( bdds->get_dap_client_protocol() );
    }
#endif
 
    if (!bdds->get_dap_client_protocol().empty()) {
        dds->set_dap_version( bdds->get_dap_client_protocol() );
    }
 
    dds->set_request_xml_base( bdds->get_request_xml_base() );
 
    BESRequestHandlerList::TheList()->execute_each( dhi ) ;
 
    // we've got what we want, now set the action back to data ddx
    dhi.action = DATADDX_RESPONSE ;
    d_response_object = bdds ;
 
    BESDEBUG( "dap", "Leaving BESDataDDXResponseHandler::execute" << endl ) ;
}

void
BESDataDDXResponseHandler::transmit( BESTransmitter * transmitter,
                                     BESDataHandlerInterface & dhi )
{
    if( d_response_object )
    {
        transmitter->send_response( DATADDX_SERVICE, d_response_object, dhi ) ;
    }
}

void
BESDataDDXResponseHandler::dump( ostream &strm ) const
{
    strm << BESIndent::LMarg << "BESDataDDXResponseHandler::dump - ("
                 << (void *)this << ")" << endl ;
    BESIndent::Indent() ;
    BESResponseHandler::dump( strm ) ;
    BESIndent::UnIndent() ;
}
 
BESResponseHandler *
BESDataDDXResponseHandler::DataDDXResponseBuilder( const string &name )
{
    return new BESDataDDXResponseHandler( name ) ;
}