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    41 

    42 #ifndef QSQLCACHEDRESULT_P_H

    43 #define QSQLCACHEDRESULT_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists for the convenience

    50 // of other Qt classes.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include "QtSql/qsqlresult.h"

    57 

    58 QT_BEGIN_NAMESPACE

    59 

    60 class QVariant;

    61 template <typename T> class QVector;

    62 

    63 class QSqlCachedResultPrivate;

    64 

    65 class Q_SQL_EXPORT QSqlCachedResult: public QSqlResult

    66 {

    67 public:

    68     virtual ~QSqlCachedResult();

    69 

    70     typedef QVector<QVariant> ValueCache;

    71 

    72 protected:

    73     QSqlCachedResult(const QSqlDriver * db);

    74 

    75     void init(int colCount);

    76     void cleanup();

    77     void clearValues();

    78 

    79     virtual bool gotoNext(ValueCache &values, int index) = 0;

    80 

    81     QVariant data(int i);

    82     bool isNull(int i);

    83     bool fetch(int i);

    84     bool fetchNext();

    85     bool fetchPrevious();

    86     bool fetchFirst();

    87     bool fetchLast();

    88 

    89     int colCount() const;

    90     ValueCache &cache();

    91 

    92     void virtual_hook(int id, void *data);

    93 private:

    94     bool cacheNext();

    95     QSqlCachedResultPrivate *d;

    96 };

    97 

    98 QT_END_NAMESPACE

    99 

   100 #endif // QSQLCACHEDRESULT_P_H