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query.h

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/*
   This file is part of the KDB libraries
   Copyright (c) 2000 Praduroux Alessandro <pradu@thekompany.com>
 
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 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
   Library General Public License for more details.
 
   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/     
#ifndef QUERY_H
#define QUERY_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <qstring.h>
#include <qstringlist.h>

#include <ksharedptr.h>

#include "recordset.h"
#include "dataobject.h"

namespace KDB {

class Connector;
class Recordset;

class Query;

typedef KSharedPtr<Query>            QueryPtr;
typedef QValueList<QueryPtr>         QueryList;
typedef QValueListIterator<QueryPtr> QueryIterator;

class Query :public DataObject{

    friend class Database;
    Q_OBJECT

 public:

     ~Query();

     void addField(const QString &table, const QString &name);

     void addTable(const QString &name) ;

     void addCondition(const QString &condition);

     QString SQL();

     RecordsetPtr openRecordset();

     bool isDesign() ;
     
 protected:

    Query( Connector * conn, const char * name, QObject *parent = 0, const QString &sql = QString::null );

    virtual void buildSQL();

 private:

    QString m_SQL;

    QStringList m_fields;
    QStringList m_tables;
    QStringList m_conditions;

    Connector * connector;
};

}

#endif

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