W10nJsonTransmitter.h

// -*- mode: c++; c-basic-offset:4 -*-
//
// FoW10JsonTransmitter.h
//
// This file is part of BES JSON File Out Module
//
// Copyright (c) 2014 OPeNDAP, Inc.
// Author: Nathan Potter <ndp@opendap.org>
//
// 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 OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
// (c) COPYRIGHT URI/MIT 1995-1999
// Please read the full copyright statement in the file COPYRIGHT_URI.
//
 
 
#ifndef A_W10nJsonTransmitter_h
#define A_W10nJsonTransmitter_h 1
 
#include <libdap/DataDDS.h>
#include <libdap/ConstraintEvaluator.h>
 
#include <BESTransmitter.h>
 
class BESContainer;

class W10nJsonTransmitter: public BESTransmitter {
private:
    static void return_temp_stream(const std::string &filename, std::ostream &strm);
    static std::string temp_dir;
    static std::string getProjectionClause(const std::string &constraintExpression);
    static void checkConstraintForW10nCompatibility(const std::string &ce);
    static std::string getProjectedVariableName(const std::string &constraintExpression);
    static void cleanupW10nContexts();
 
    friend struct ContextCleanup;   // used to ensure cleanupW10nContexts is called
 
public:
    W10nJsonTransmitter();
    virtual ~W10nJsonTransmitter() { }
 
    static void send_data(BESResponseObject *obj, BESDataHandlerInterface &dhi);
    static void send_metadata(BESResponseObject *obj, BESDataHandlerInterface &dhi);
};
 
#endif /* A_W10nJsonTransmitter_h */