QGIS API Documentation  2.99.0-Master (ae4d26a)
Public Member Functions | Protected Attributes | Friends | List of all members
QgsVectorLayerFeatureSource Class Reference

Partial snapshot of vector layer's state (only the members necessary for access to features) More...

#include <qgsvectorlayerfeatureiterator.h>

Inheritance diagram for QgsVectorLayerFeatureSource:
Inheritance graph
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Public Member Functions

 QgsVectorLayerFeatureSource (const QgsVectorLayer *layer)
 Constructor for QgsVectorLayerFeatureSource. More...
 
 ~QgsVectorLayerFeatureSource ()
 
QgsCoordinateReferenceSystem crs () const
 Returns the coordinate reference system for features retrieved from this source. More...
 
QgsFields fields () const
 Returns the fields that will be available for features that are retrieved from this source. More...
 
virtual QgsFeatureIterator getFeatures (const QgsFeatureRequest &request=QgsFeatureRequest()) override
 Get an iterator for features matching the specified request. More...
 
- Public Member Functions inherited from QgsAbstractFeatureSource
virtual ~QgsAbstractFeatureSource ()
 

Protected Attributes

QList< QgsFieldmAddedAttributes
 
QgsFeatureMap mAddedFeatures
 
QgsChangedAttributesMap mChangedAttributeValues
 
QgsGeometryMap mChangedGeometries
 
QgsCoordinateReferenceSystem mCrs
 
QgsAttributeList mDeletedAttributeIds
 
QgsFeatureIds mDeletedFeatureIds
 
QgsExpressionFieldBuffermExpressionFieldBuffer = nullptr
 
QgsFields mFields
 
bool mHasEditBuffer
 
QgsVectorLayerJoinBuffermJoinBuffer = nullptr
 
QgsExpressionContextScope mLayerScope
 
QgsAbstractFeatureSourcemProviderFeatureSource = nullptr
 
- Protected Attributes inherited from QgsAbstractFeatureSource
QSet< QgsAbstractFeatureIterator *> mActiveIterators
 

Friends

class QgsVectorLayerFeatureIterator
 

Additional Inherited Members

- Protected Member Functions inherited from QgsAbstractFeatureSource
void iteratorClosed (QgsAbstractFeatureIterator *it)
 
void iteratorOpened (QgsAbstractFeatureIterator *it)
 

Detailed Description

Partial snapshot of vector layer's state (only the members necessary for access to features)

Definition at line 49 of file qgsvectorlayerfeatureiterator.h.

Constructor & Destructor Documentation

◆ QgsVectorLayerFeatureSource()

QgsVectorLayerFeatureSource::QgsVectorLayerFeatureSource ( const QgsVectorLayer layer)
explicit

Constructor for QgsVectorLayerFeatureSource.

Parameters
layersource layer

Definition at line 30 of file qgsvectorlayerfeatureiterator.cpp.

◆ ~QgsVectorLayerFeatureSource()

QgsVectorLayerFeatureSource::~QgsVectorLayerFeatureSource ( )

Definition at line 87 of file qgsvectorlayerfeatureiterator.cpp.

Member Function Documentation

◆ crs()

QgsCoordinateReferenceSystem QgsVectorLayerFeatureSource::crs ( ) const

Returns the coordinate reference system for features retrieved from this source.

Since
QGIS 3.0

Definition at line 105 of file qgsvectorlayerfeatureiterator.cpp.

◆ fields()

QgsFields QgsVectorLayerFeatureSource::fields ( ) const

Returns the fields that will be available for features that are retrieved from this source.

Since
QGIS 3.0

Definition at line 100 of file qgsvectorlayerfeatureiterator.cpp.

◆ getFeatures()

QgsFeatureIterator QgsVectorLayerFeatureSource::getFeatures ( const QgsFeatureRequest request = QgsFeatureRequest())
overridevirtual

Get an iterator for features matching the specified request.

Parameters
requestThe request
Returns
A feature iterator

Implements QgsAbstractFeatureSource.

Definition at line 94 of file qgsvectorlayerfeatureiterator.cpp.

Friends And Related Function Documentation

◆ QgsVectorLayerFeatureIterator

friend class QgsVectorLayerFeatureIterator
friend

Definition at line 63 of file qgsvectorlayerfeatureiterator.h.

Member Data Documentation

◆ mAddedAttributes

QList<QgsField> QgsVectorLayerFeatureSource::mAddedAttributes
protected

Definition at line 99 of file qgsvectorlayerfeatureiterator.h.

◆ mAddedFeatures

QgsFeatureMap QgsVectorLayerFeatureSource::mAddedFeatures
protected

Definition at line 96 of file qgsvectorlayerfeatureiterator.h.

◆ mChangedAttributeValues

QgsChangedAttributesMap QgsVectorLayerFeatureSource::mChangedAttributeValues
protected

Definition at line 100 of file qgsvectorlayerfeatureiterator.h.

◆ mChangedGeometries

QgsGeometryMap QgsVectorLayerFeatureSource::mChangedGeometries
protected

Definition at line 97 of file qgsvectorlayerfeatureiterator.h.

◆ mCrs

QgsCoordinateReferenceSystem QgsVectorLayerFeatureSource::mCrs
protected

Definition at line 103 of file qgsvectorlayerfeatureiterator.h.

◆ mDeletedAttributeIds

QgsAttributeList QgsVectorLayerFeatureSource::mDeletedAttributeIds
protected

Definition at line 101 of file qgsvectorlayerfeatureiterator.h.

◆ mDeletedFeatureIds

QgsFeatureIds QgsVectorLayerFeatureSource::mDeletedFeatureIds
protected

Definition at line 98 of file qgsvectorlayerfeatureiterator.h.

◆ mExpressionFieldBuffer

QgsExpressionFieldBuffer* QgsVectorLayerFeatureSource::mExpressionFieldBuffer = nullptr
protected

Definition at line 85 of file qgsvectorlayerfeatureiterator.h.

◆ mFields

QgsFields QgsVectorLayerFeatureSource::mFields
protected

Definition at line 87 of file qgsvectorlayerfeatureiterator.h.

◆ mHasEditBuffer

bool QgsVectorLayerFeatureSource::mHasEditBuffer
protected

Definition at line 91 of file qgsvectorlayerfeatureiterator.h.

◆ mJoinBuffer

QgsVectorLayerJoinBuffer* QgsVectorLayerFeatureSource::mJoinBuffer = nullptr
protected

Definition at line 83 of file qgsvectorlayerfeatureiterator.h.

◆ mLayerScope

QgsExpressionContextScope QgsVectorLayerFeatureSource::mLayerScope
protected

Definition at line 89 of file qgsvectorlayerfeatureiterator.h.

◆ mProviderFeatureSource

QgsAbstractFeatureSource* QgsVectorLayerFeatureSource::mProviderFeatureSource = nullptr
protected

Definition at line 81 of file qgsvectorlayerfeatureiterator.h.


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