# Source: toqvalue.h

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    //***************************************************************************
    /*
     * TOra - An Oracle Toolkit for DBA's and developers
     * Copyright (C) 2000-2001,2001 Underscore AB
     *
     * 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;  only version 2 of
     * the License is valid for this program.
     *
     * 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.
     *
     *      As a special exception, you have permission to link this program
     *      with the Oracle Client libraries and distribute executables, as long
     *      as you follow the requirements of the GNU GPL in regard to all of the
     *      software in the executable aside from Oracle client libraries.
     *
     *      Specifically you are not permitted to link this program with the
     *      Qt/UNIX, Qt/Windows or Qt Non Commercial products of TrollTech.
     *      And you are not permitted to distribute binaries compiled against
     *      these libraries without written consent from Underscore AB. Observe
     *      that this does not disallow linking to the Qt Free Edition.
     *
     * All trademarks belong to their respective owners.
     *
     ****************************************************************************/

    #ifndef __TOQVALUE_H
    #define __TOQVALUE_H

    #include <list>

    #include <qstring.h>

    /** This function is used to represent values that are passed to and from queries
     */
    class toQValue {
      enum queryType {
        intType,
        doubleType,
        stringType,
        nullType
      } Type;

      union queryValue {
        int Int;
        double Double;
        QString *String;
      } Value;
    public:
      /** Create null value.
       */
      toQValue(void);
      /** Create integer value.
       * @param i Value.
       */
      toQValue(int i);
      /** Create string value.
       * @param str Value.
       */
      toQValue(const QString &str);
      /** Create double value.
       * @param d Value.
       */
      toQValue(double d);
      /** Destruct query.
       */
      ~toQValue();

      /** Create a copy of a value.
       */
      toQValue(const toQValue ©);
      /** Assign this value from another value.
       */
      const toQValue &operator = (const toQValue ©);

      /** Check if this is an int value.
       */
      bool isInt(void) const;
      /** Check if this is a double value.
       */
      bool isDouble(void) const;
      /** Check if this is a string value.
       */
      bool isString(void) const;
      /** Check if this value is null.
       */
      bool isNull(void) const;

      /** Get utf8 format of this value.
       */
      QCString utf8Value(void) const;
      /** Get integer representation of this value.
       */
      int toInt(void) const;
      /** Get double representation of this value.
       */
      double toDouble(void) const;

      /** Convert value to a string.
       */
      operator QString() const;
    };

    /** A short representation of list<toQuery::queryValue>
     */
    typedef std::list<toQValue> toQList;

    #endif