sqlite-output.h

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/*
 * Copyright (c) 2018 Natale Patriciello <natale.patriciello@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#ifndef SQLITE_OUTPUT_H
#define SQLITE_OUTPUT_H
 
#include "ns3/simple-ref-count.h"
 
#include <mutex>
#include <sqlite3.h>
#include <string>
 
namespace ns3
{
 
class SQLiteOutput : public SimpleRefCount<SQLiteOutput>
{
  public:
    SQLiteOutput(const std::string& name);
 
    ~SQLiteOutput();
 
    void SetJournalInMemory();
 
    bool SpinExec(const std::string& cmd) const;
 
    bool SpinExec(sqlite3_stmt* stmt) const;
 
    bool WaitExec(const std::string& cmd) const;
 
    bool WaitExec(sqlite3_stmt* stmt) const;
 
    bool WaitPrepare(sqlite3_stmt** stmt, const std::string& cmd) const;
 
    bool SpinPrepare(sqlite3_stmt** stmt, const std::string& cmd) const;
 
    template <typename T>
    bool Bind(sqlite3_stmt* stmt, int pos, const T& value) const;
 
    template <typename T>
    T RetrieveColumn(sqlite3_stmt* stmt, int pos) const;
 
    static int SpinStep(sqlite3_stmt* stmt);
    static int SpinFinalize(sqlite3_stmt* stmt);
 
    static int SpinReset(sqlite3_stmt* stmt);
 
  protected:
    int WaitExec(sqlite3* db, const std::string& cmd) const;
 
    int WaitExec(sqlite3* db, sqlite3_stmt* stmt) const;
 
    int WaitPrepare(sqlite3* db, sqlite3_stmt** stmt, const std::string& cmd) const;
 
    static int SpinExec(sqlite3* db, const std::string& cmd);
 
    static int SpinExec(sqlite3* db, sqlite3_stmt* stmt);
 
    static int SpinPrepare(sqlite3* db, sqlite3_stmt** stmt, const std::string& cmd);
 
    [[noreturn]] static void Error(sqlite3* db, const std::string& cmd);
 
    static bool CheckError(sqlite3* db, int rc, const std::string& cmd, bool hardExit);
 
  private:
    std::string m_dBname;       
    mutable std::mutex m_mutex; 
    sqlite3* m_db{nullptr};     
};
 
} // namespace ns3
#endif