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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 |
101 | |