Qt 4.8
qsqlfield.h
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41 
42 #ifndef QSQLFIELD_H
43 #define QSQLFIELD_H
44 
45 #include <QtCore/qvariant.h>
46 #include <QtCore/qstring.h>
47 
49 
51 
52 QT_MODULE(Sql)
53 
54 class QSqlFieldPrivate;
55 
57 {
58 public:
59  enum RequiredStatus { Unknown = -1, Optional = 0, Required = 1 };
60 
61  QSqlField(const QString& fieldName = QString(),
63 
64  QSqlField(const QSqlField& other);
65  QSqlField& operator=(const QSqlField& other);
66  bool operator==(const QSqlField& other) const;
67  inline bool operator!=(const QSqlField &other) const { return !operator==(other); }
68  ~QSqlField();
69 
70  void setValue(const QVariant& value);
71  inline QVariant value() const
72  { return val; }
73  void setName(const QString& name);
74  QString name() const;
75  bool isNull() const;
76  void setReadOnly(bool readOnly);
77  bool isReadOnly() const;
78  void clear();
79  QVariant::Type type() const;
80  bool isAutoValue() const;
81 
82  void setType(QVariant::Type type);
83  void setRequiredStatus(RequiredStatus status);
84  inline void setRequired(bool required)
85  { setRequiredStatus(required ? Required : Optional); }
86  void setLength(int fieldLength);
87  void setPrecision(int precision);
88  void setDefaultValue(const QVariant &value);
89  void setSqlType(int type);
90  void setGenerated(bool gen);
91  void setAutoValue(bool autoVal);
92 
93  RequiredStatus requiredStatus() const;
94  int length() const;
95  int precision() const;
96  QVariant defaultValue() const;
97  int typeID() const;
98  bool isGenerated() const;
99  bool isValid() const;
100 
101 #ifdef QT3_SUPPORT
102  inline QT3_SUPPORT void setNull() { clear(); }
103 #endif
104 
105 private:
106  void detach();
109 };
110 
111 #ifndef QT_NO_DEBUG_STREAM
113 #endif
114 
116 
118 
119 #endif // QSQLFIELD_H
The QVariant class acts like a union for the most common Qt data types.
Definition: qvariant.h:92
QSqlFieldPrivate * d
Definition: qsqlfield.h:108
The QDebug class provides an output stream for debugging information.
Definition: qdebug.h:62
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
QVariant val
Definition: qsqlfield.h:107
QVariant value() const
Returns the value of the field as a QVariant.
Definition: qsqlfield.h:71
static void clear(QVariant::Private *d)
Definition: qvariant.cpp:197
static LibLoadStatus status
Definition: qlocale_icu.cpp:69
The QString class provides a Unicode character string.
Definition: qstring.h:83
#define Q_SQL_EXPORT
Definition: qglobal.h:1451
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
RequiredStatus
Specifies whether the field is required or optional.
Definition: qsqlfield.h:59
const char * name
Type
This enum type defines the types of variable that a QVariant can contain.
Definition: qvariant.h:95
bool operator!=(const QSqlField &other) const
Returns true if the field is unequal to other; otherwise returns false.
Definition: qsqlfield.h:67
void setRequired(bool required)
Sets the required status of this field to Required if required is true; otherwise sets it to Optional...
Definition: qsqlfield.h:84
Q_SQL_EXPORT QDebug operator<<(QDebug, const QSqlField &)
Definition: qsqlfield.cpp:523
The QSqlField class manipulates the fields in SQL database tables and views.
Definition: qsqlfield.h:56
#define QT_END_HEADER
Definition: qglobal.h:137
bool operator==(QBool b1, bool b2)
Definition: qglobal.h:2023
static bool isNull(const QVariant::Private *d)
Definition: qvariant.cpp:300