Qt 4.8
qsqlresult.h
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41 
42 #ifndef QSQLRESULT_H
43 #define QSQLRESULT_H
44 
45 #include <QtCore/qvariant.h>
46 #include <QtCore/qvector.h>
47 #include <QtSql/qsql.h>
48 
50 
52 
53 QT_MODULE(Sql)
54 
55 class QString;
56 class QSqlRecord;
57 template <typename T> class QVector;
58 class QVariant;
59 class QSqlDriver;
60 class QSqlError;
61 class QSqlResultPrivate;
62 
64 {
65  friend class QSqlQuery;
66  friend class QSqlTableModelPrivate;
67  friend class QSqlResultPrivate;
68 
69 public:
70  virtual ~QSqlResult();
71  virtual QVariant handle() const;
72 
73 protected:
76  NamedBinding
77 #ifdef QT3_SUPPORT
78  , BindByPosition = PositionalBinding,
79  BindByName = NamedBinding
80 #endif
81  };
82 
83  explicit QSqlResult(const QSqlDriver * db);
84  int at() const;
85  QString lastQuery() const;
86  QSqlError lastError() const;
87  bool isValid() const;
88  bool isActive() const;
89  bool isSelect() const;
90  bool isForwardOnly() const;
91  const QSqlDriver* driver() const;
92  virtual void setAt(int at);
93  virtual void setActive(bool a);
94  virtual void setLastError(const QSqlError& e);
95  virtual void setQuery(const QString& query);
96  virtual void setSelect(bool s);
97  virtual void setForwardOnly(bool forward);
98 
99  // prepared query support
100  virtual bool exec();
101  virtual bool prepare(const QString& query);
102  virtual bool savePrepare(const QString& sqlquery);
103  virtual void bindValue(int pos, const QVariant& val, QSql::ParamType type);
104  virtual void bindValue(const QString& placeholder, const QVariant& val,
105  QSql::ParamType type);
106  void addBindValue(const QVariant& val, QSql::ParamType type);
107  QVariant boundValue(const QString& placeholder) const;
108  QVariant boundValue(int pos) const;
109  QSql::ParamType bindValueType(const QString& placeholder) const;
110  QSql::ParamType bindValueType(int pos) const;
111  int boundValueCount() const;
112  QVector<QVariant>& boundValues() const;
113  QString executedQuery() const;
114  QString boundValueName(int pos) const;
115  void clear();
116  bool hasOutValues() const;
117 
118  BindingSyntax bindingSyntax() const;
119 
120  virtual QVariant data(int i) = 0;
121  virtual bool isNull(int i) = 0;
122  virtual bool reset(const QString& sqlquery) = 0;
123  virtual bool fetch(int i) = 0;
124  virtual bool fetchNext();
125  virtual bool fetchPrevious();
126  virtual bool fetchFirst() = 0;
127  virtual bool fetchLast() = 0;
128  virtual int size() = 0;
129  virtual int numRowsAffected() = 0;
130  virtual QSqlRecord record() const;
131  virtual QVariant lastInsertId() const;
132 
133  enum VirtualHookOperation { BatchOperation, DetachFromResultSet, SetNumericalPrecision, NextResult };
134  virtual void virtual_hook(int id, void *data);
135  bool execBatch(bool arrayBind = false);
136  void detachFromResultSet();
137  void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy policy);
138  QSql::NumericalPrecisionPolicy numericalPrecisionPolicy() const;
139  bool nextResult();
140 
141 private:
143  void resetBindCount(); // HACK
144 
145 private:
147 };
148 
150 
152 
153 #endif // QSQLRESULT_H
The QVariant class acts like a union for the most common Qt data types.
Definition: qvariant.h:92
The QSqlError class provides SQL database error information.
Definition: qsqlerror.h:53
NumericalPrecisionPolicy
Definition: qsql.h:82
int type
Definition: qmetatype.cpp:239
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define QT_MODULE(x)
Definition: qglobal.h:2783
#define QT_BEGIN_HEADER
Definition: qglobal.h:136
#define at(className, varName)
Q_CORE_EXPORT QTextStream & reset(QTextStream &s)
The QSqlQuery class provides a means of executing and manipulating SQL statements.
Definition: qsqlquery.h:63
static void clear(QVariant::Private *d)
Definition: qvariant.cpp:197
VirtualHookOperation
Definition: qsqlresult.h:133
#define Q_DISABLE_COPY(Class)
Disables the use of copy constructors and assignment operators for the given Class.
Definition: qglobal.h:2523
long ASN1_INTEGER_get ASN1_INTEGER * a
The QSqlRecord class encapsulates a database record.
Definition: qsqlrecord.h:58
The QSqlDriver class is an abstract base class for accessing specific SQL databases.
Definition: qsqldriver.h:68
The QString class provides a Unicode character string.
Definition: qstring.h:83
The QVector class is a template class that provides a dynamic array.
Definition: qdatastream.h:64
#define Q_SQL_EXPORT
Definition: qglobal.h:1451
QSqlResultPrivate * d
Definition: qsqlresult.h:142
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
static const char * data(const QByteArray &arr)
BindingSyntax
This enum type specifies the different syntaxes for specifying placeholders in prepared queries...
Definition: qsqlresult.h:74
#define QT_END_HEADER
Definition: qglobal.h:137
The QSqlResult class provides an abstract interface for accessing data from specific SQL databases...
Definition: qsqlresult.h:63
static bool isNull(const QVariant::Private *d)
Definition: qvariant.cpp:300