QgsAttributes Class Reference

A vector of attributes. More...

#include <qgsattributes.h>

Inheritance diagram for QgsAttributes:

Public Member Functions
	QgsAttributes ()=default
	QgsAttributes (const QVector< QVariant > &v)
	Copies another vector of attributes.
	QgsAttributes (int size)
	Create a new vector of attributes with the given size.
	QgsAttributes (int size, const QVariant &v)
	Constructs a vector with an initial size of size elements.
bool	isUnsetValue (int index) const
	Returns true if the attribute at the specified index is an unset value.
bool	operator!= (const QgsAttributes &v) const
bool	operator== (const QgsAttributes &v) const
	Compares two vectors of attributes.
CORE_EXPORT QgsAttributeMap	toMap () const
	Returns a QgsAttributeMap of the attribute values.

Detailed Description

A vector of attributes.

Mostly equal to QVector<QVariant>.

Note

QgsAttributes is implemented as a Python list of Python objects.

Definition at line 59 of file qgsattributes.h.

Constructor & Destructor Documentation

QgsAttributes() [1/4]

QgsAttributes::QgsAttributes ( )

default

QgsAttributes() [2/4]

QgsAttributes::QgsAttributes ( int  size )

inline

Create a new vector of attributes with the given size.

Parameters

size	Number of attributes

Definition at line 70 of file qgsattributes.h.

QgsAttributes() [3/4]

QgsAttributes::QgsAttributes ( int  size, const QVariant &  v  )

inline

Constructs a vector with an initial size of size elements.

Each element is initialized with value.

Parameters

size	Number of elements
v	Initial value

Definition at line 79 of file qgsattributes.h.

QgsAttributes() [4/4]

QgsAttributes::QgsAttributes ( const QVector< QVariant > &  v )

inline

Copies another vector of attributes.

Parameters

v	Attributes to copy

Definition at line 87 of file qgsattributes.h.

Member Function Documentation

isUnsetValue()

bool QgsAttributes::isUnsetValue ( int  index ) const

inline

Returns true if the attribute at the specified index is an unset value.

See also

QgsUnsetAttributeValue

Definition at line 129 of file qgsattributes.h.

operator!=()

bool QgsAttributes::operator!= ( const QgsAttributes &  v ) const

inline

Definition at line 137 of file qgsattributes.h.

operator==()

bool QgsAttributes::operator== ( const QgsAttributes &  v ) const

inline

Compares two vectors of attributes.

They are considered equal if all their members contain the same value and NULL flag. This was introduced because the default Qt implementation of QVariant comparison does not handle NULL values for certain types (like int).

Parameters

v	The attributes to compare

Returns

true if v is equal

Definition at line 100 of file qgsattributes.h.

toMap()

QgsAttributeMap QgsAttributes::toMap

(

)

const

Returns a QgsAttributeMap of the attribute values.

Null values are excluded from the map.

Note

not available in Python bindings

Definition at line 21 of file qgsattributes.cpp.

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The documentation for this class was generated from the following files:

• /build/qgis-3.41.0+git20241119+45a0abf3bec+99sid/src/core/qgsattributes.h
• /build/qgis-3.41.0+git20241119+45a0abf3bec+99sid/src/core/qgsattributes.cpp