QgsVectorLayerFeatureIterator::FetchJoinInfo Struct Reference

Join information prepared for fast attribute id mapping in QgsVectorLayerJoinBuffer::updateFeatureAttributes(). More...

#include <qgsvectorlayerfeatureiterator.h>

Collaboration diagram for QgsVectorLayerFeatureIterator::FetchJoinInfo:

List of all members.

Public Member Functions
void	addJoinedAttributesCached (QgsFeature &f, const QVariant &joinValue) const
void	addJoinedAttributesDirect (QgsFeature &f, const QVariant &joinValue) const
Public Attributes
QgsAttributeList	attributes
	attributes to fetch
int	indexOffset
	at what position the joined fields start
int	joinField
	index of field (of the joined layer) must have equal value
const QgsVectorJoinInfo *	joinInfo
	cannonical source of information about the join
QgsVectorLayer *	joinLayer
	resolved pointer to the joined layer
int	targetField
	index of field (of this layer) that drives the join

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Detailed Description

Join information prepared for fast attribute id mapping in QgsVectorLayerJoinBuffer::updateFeatureAttributes().

Created in the select() method of QgsVectorLayerJoinBuffer for the joins that contain fetched attributes

Definition at line 75 of file qgsvectorlayerfeatureiterator.h.

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Member Function Documentation

void QgsVectorLayerFeatureIterator::FetchJoinInfo::addJoinedAttributesCached	(	QgsFeature &	f,
		const QVariant &	joinValue
	)		const

Definition at line 375 of file qgsvectorlayerfeatureiterator.cpp.

References QgsVectorJoinInfo::cachedAttributes, indexOffset, joinField, joinInfo, and QgsFeature::setAttribute().

Referenced by QgsVectorLayerFeatureIterator::addJoinedAttributes().

void QgsVectorLayerFeatureIterator::FetchJoinInfo::addJoinedAttributesDirect	(	QgsFeature &	f,
		const QVariant &	joinValue
	)		const

Definition at line 397 of file qgsvectorlayerfeatureiterator.cpp.

References QgsFeature::attributes(), QgsFeatureIterator::nextFeature(), QgsFeatureRequest::NoGeometry, QgsFeature::setAttribute(), QgsFeatureRequest::setFlags(), and QgsFeatureRequest::setSubsetOfAttributes().

Referenced by QgsVectorLayerFeatureIterator::addJoinedAttributes().

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Member Data Documentation

QgsAttributeList QgsVectorLayerFeatureIterator::FetchJoinInfo::attributes

attributes to fetch

Definition at line 78 of file qgsvectorlayerfeatureiterator.h.

int QgsVectorLayerFeatureIterator::FetchJoinInfo::indexOffset

at what position the joined fields start

Definition at line 79 of file qgsvectorlayerfeatureiterator.h.

Referenced by addJoinedAttributesCached(), and QgsVectorLayerFeatureIterator::prepareJoins().

int QgsVectorLayerFeatureIterator::FetchJoinInfo::joinField

index of field (of the joined layer) must have equal value

Definition at line 82 of file qgsvectorlayerfeatureiterator.h.

Referenced by addJoinedAttributesCached(), and QgsVectorLayerFeatureIterator::prepareJoins().

const QgsVectorJoinInfo* QgsVectorLayerFeatureIterator::FetchJoinInfo::joinInfo

cannonical source of information about the join

Definition at line 77 of file qgsvectorlayerfeatureiterator.h.

Referenced by QgsVectorLayerFeatureIterator::addJoinedAttributes(), addJoinedAttributesCached(), and QgsVectorLayerFeatureIterator::prepareJoins().

QgsVectorLayer* QgsVectorLayerFeatureIterator::FetchJoinInfo::joinLayer

resolved pointer to the joined layer

Definition at line 80 of file qgsvectorlayerfeatureiterator.h.

Referenced by QgsVectorLayerFeatureIterator::prepareJoins().

int QgsVectorLayerFeatureIterator::FetchJoinInfo::targetField

index of field (of this layer) that drives the join

Definition at line 81 of file qgsvectorlayerfeatureiterator.h.

Referenced by QgsVectorLayerFeatureIterator::addJoinedAttributes(), and QgsVectorLayerFeatureIterator::prepareJoins().

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

• src/core/qgsvectorlayerfeatureiterator.h
• src/core/qgsvectorlayerfeatureiterator.cpp