query_handler.h

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#ifndef QUERY_HANDLER_CLASS
#define QUERY_HANDLER_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : query_handler                                                     *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 2008-$now By Author.  This program is free software; you can  *
* redistribute it and/or modify it under the terms of the GNU General Public  *
* License as published by the Free Software Foundation; either version 2 of   *
* the License or (at your option) any later version.  This is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "common.h"

#include <basis/istring.h>
#include <basis/object_base.h>

// forward.
class database_login_info;
class deep_string_array;
class log_base;

const int MAX_DB_STRING = 2048;  // maximum length string we handle in tables.


class DB_FREETDS_CLASS_STYLE query_handler
{
public:
  query_handler();
  virtual ~query_handler();

  IMPLEMENT_CLASS_NAME("query_handler");

  bool prepare_for_query(const istring &config_file,
          database_login_info &persistent_login_info);

  bool login_to_database(const database_login_info &cred);

  bool use_database(const database_login_info &cred);

  DBPROCESS *current_db() { return _global_current_db; }

  void show_column_structure();

  bool bind_columns();

  bool process_query(const istring &query, log_base &output);

  bool print_row(log_base &output);

  bool show_this_row(int row_num, log_base &output);

  void show_results(bool verbose, log_base &output);

  istring get_bound_string(int index);
  int get_bound_int(int index);

private:
  DBPROCESS *_global_current_db;  
  deep_string_array *_bind_strings;  
  int_array *_bind_ints;  
};

#endif

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