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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
58QT_BEGIN_NAMESPACE
59
60class QVariant;
61template <typename T> class QVector;
62
63class QSqlCachedResultPrivate;
64
65class Q_SQL_EXPORT QSqlCachedResult: public QSqlResult
66{
67public:
68 virtual ~QSqlCachedResult();
69
70 typedef QVector<QVariant> ValueCache;
71
72protected:
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);
93private:
94 bool cacheNext();
95 QSqlCachedResultPrivate *d;
96};
97
98QT_END_NAMESPACE
99
100#endif // QSQLCACHEDRESULT_P_H
101