QGIS API Documentation  2.0.1-Dufour
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Public Member Functions | Public Attributes | List of all members
QgsVectorLayerFeatureIterator::FetchJoinInfo Struct Reference

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

#include <qgsvectorlayerfeatureiterator.h>

Collaboration diagram for QgsVectorLayerFeatureIterator::FetchJoinInfo:
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Public Member Functions

void addJoinedAttributesCached (QgsFeature &f, const QVariant &joinValue) const
void addJoinedAttributesDirect (QgsFeature &f, const QVariant &joinValue) const

Public Attributes

const QgsVectorJoinInfojoinInfo
 cannonical source of information about the join
QgsAttributeList attributes
 attributes to fetch
int indexOffset
 at what position the joined fields start
QgsVectorLayerjoinLayer
 resolved pointer to the joined layer
int targetField
 index of field (of this layer) that drives the join
int joinField
 index of field (of the joined layer) must have equal value

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 84 of file qgsvectorlayerfeatureiterator.h.

Member Function Documentation

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

Member Data Documentation

QgsAttributeList QgsVectorLayerFeatureIterator::FetchJoinInfo::attributes

attributes to fetch

Definition at line 87 of file qgsvectorlayerfeatureiterator.h.

int QgsVectorLayerFeatureIterator::FetchJoinInfo::indexOffset

at what position the joined fields start

Definition at line 88 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 91 of file qgsvectorlayerfeatureiterator.h.

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

const QgsVectorJoinInfo* QgsVectorLayerFeatureIterator::FetchJoinInfo::joinInfo
QgsVectorLayer* QgsVectorLayerFeatureIterator::FetchJoinInfo::joinLayer

resolved pointer to the joined layer

Definition at line 89 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 90 of file qgsvectorlayerfeatureiterator.h.

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


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