QgsFeatureIterator Class Reference

Wrapper for iterator of features from vector data provider or vector layer. More...

#include <qgsfeatureiterator.h>

Collaboration diagram for QgsFeatureIterator:

List of all members.

Public Member Functions
	QgsFeatureIterator ()
	construct invalid iterator
	QgsFeatureIterator (QgsAbstractFeatureIterator *iter)
	construct a valid iterator
	QgsFeatureIterator (const QgsFeatureIterator &fi)
	copy constructor copies the iterator, increases ref.count
	~QgsFeatureIterator ()
	destructor deletes the iterator if it has no more references
bool	close ()
bool	isClosed ()
	find out whether the iterator is still valid or closed already
bool	nextFeature (QgsFeature &f)
QgsFeatureIterator &	operator= (const QgsFeatureIterator &other)
bool	rewind ()
Protected Attributes
QgsAbstractFeatureIterator *	mIter
Friends
bool	operator!= (const QgsFeatureIterator &fi1, const QgsFeatureIterator &fi2)
bool	operator== (const QgsFeatureIterator &fi1, const QgsFeatureIterator &fi2)

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Detailed Description

Wrapper for iterator of features from vector data provider or vector layer.

Definition at line 57 of file qgsfeatureiterator.h.

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Constructor & Destructor Documentation

QgsFeatureIterator::QgsFeatureIterator

(

)

[inline]

construct invalid iterator

Definition at line 87 of file qgsfeatureiterator.h.

QgsFeatureIterator::QgsFeatureIterator

(

QgsAbstractFeatureIterator *

iter

)

[inline]

construct a valid iterator

Definition at line 92 of file qgsfeatureiterator.h.

References QgsAbstractFeatureIterator::ref().

QgsFeatureIterator::QgsFeatureIterator

(

const QgsFeatureIterator &

fi

)

[inline]

copy constructor copies the iterator, increases ref.count

Definition at line 99 of file qgsfeatureiterator.h.

References mIter, and QgsAbstractFeatureIterator::ref().

QgsFeatureIterator::~QgsFeatureIterator

(

)

[inline]

destructor deletes the iterator if it has no more references

Definition at line 106 of file qgsfeatureiterator.h.

References QgsAbstractFeatureIterator::deref(), and mIter.

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Member Function Documentation

bool QgsFeatureIterator::close

(

)

[inline]

Definition at line 122 of file qgsfeatureiterator.h.

References QgsAbstractFeatureIterator::close(), and mIter.

Referenced by QgsVectorLayerFeatureIterator::close(), QgsCachedFeatureWriterIterator::close(), QgsAttributeTableFilterModel::generateListOfVisibleFeatures(), QgsExpressionSelectionDialog::on_mActionAddToSelection_triggered(), QgsExpressionSelectionDialog::on_mActionRemoveFromSelection_triggered(), QgsExpressionSelectionDialog::on_mActionSelect_triggered(), and QgsExpressionSelectionDialog::on_mActionSelectInstersect_triggered().

bool QgsFeatureIterator::isClosed

(

)

[inline]

find out whether the iterator is still valid or closed already

Definition at line 127 of file qgsfeatureiterator.h.

References QgsAbstractFeatureIterator::mClosed, and mIter.

bool QgsFeatureIterator::nextFeature

(

QgsFeature &

f

)

[inline]

Definition at line 112 of file qgsfeatureiterator.h.

References mIter, and QgsAbstractFeatureIterator::nextFeature().

Referenced by QgsVectorLayerFeatureIterator::FetchJoinInfo::addJoinedAttributesDirect(), QgsVectorLayerEditUtils::addPart(), QgsVectorLayerEditUtils::addRing(), QgsOfflineEditing::applyFeaturesAdded(), QgsAtlasComposition::beginRender(), QgsVectorLayer::boundingBoxOfSelected(), QgsGeometryAnalyzer::buffer(), QgsInterpolator::cacheBaseData(), QgsVectorLayerJoinBuffer::cacheJoinLayer(), QgsZonalStatistics::calculateStatistics(), QgsGeometryAnalyzer::centroids(), QgsGeometryAnalyzer::convexHull(), QgsOfflineEditing::copyVectorLayer(), QgsRuleBasedRendererV2Widget::countFeatures(), QgsSearchQueryBuilder::countRecords(), QgsVectorLayer::countSymbolFeatures(), QgsAttributeEditor::createAttributeEditor(), QgsFormAnnotationItem::createDesignerWidget(), QgsPointDisplacementRenderer::createDisplacementGroups(), QgsGraduatedSymbolRendererV2::createRenderer(), QgsGeometryAnalyzer::dissolve(), QgsVectorLayer::drawLabels(), QgsVectorLayer::drawRendererV2(), QgsVectorLayer::drawRendererV2Levels(), QgsGeometryAnalyzer::eventLayer(), QgsVectorFileWriter::exportFeaturesSymbolLevels(), QgsVectorLayer::extent(), QgsVectorLayerCache::featureAtId(), QgsMapTip::fetchFeature(), QgsVectorDataProvider::fillMinMaxCache(), QgsAttributeTableFilterModel::generateListOfVisibleFeatures(), QgsComposerAttributeTable::getFeatureAttributes(), QgsSearchQueryBuilder::getFieldValues(), QgsMapToolIdentify::identifyVectorLayer(), QgsVectorLayerImport::importLayer(), QgsTINInterpolator::initialize(), QgsOverlayAnalyzer::intersectFeature(), QgsOverlayAnalyzer::intersection(), QgsVectorLayer::invertSelection(), QgsVectorLayer::invertSelectionInRectangle(), QgsAttributeTableModel::loadLayer(), QgsLineVectorLayerDirector::makeGraph(), QgsVectorLayer::maximumValue(), QgsVectorLayer::minimumValue(), QgsVectorLayerFeatureIterator::nextFeature(), QgsCachedFeatureWriterIterator::nextFeature(), QgsVectorLayerFeatureIterator::nextFeatureFid(), QgsExpressionSelectionDialog::on_mActionAddToSelection_triggered(), QgsExpressionSelectionDialog::on_mActionRemoveFromSelection_triggered(), QgsExpressionSelectionDialog::on_mActionSelect_triggered(), QgsExpressionSelectionDialog::on_mActionSelectInstersect_triggered(), QgsAttributeTableModel::prefetchColumnData(), QgsAtlasComposition::prepareForFeature(), QgsVectorLayer::prepareLabelingAndDiagrams(), QgsAttributeDialog::QgsAttributeDialog(), QgsVectorLayer::removePolygonIntersections(), QgsVectorLayer::select(), QgsGeometryAnalyzer::simplify(), QgsVectorLayer::snapWithContext(), QgsVectorLayerEditUtils::splitFeatures(), QgsRendererRulePropsDialog::testFilter(), QgsVectorLayerEditUtils::translateFeature(), QgsVectorLayerUndoCommandChangeAttribute::undo(), QgsVectorDataProvider::uniqueValues(), QgsVectorLayer::uniqueValues(), QgsOfflineEditing::updateFidLookup(), QgsVectorLayerFeatureIterator::useChangedAttributeFeature(), and QgsVectorFileWriter::writeAsVectorFormat().

QgsFeatureIterator & QgsFeatureIterator::operator=

(

const QgsFeatureIterator &

other

)

Definition at line 42 of file qgsfeatureiterator.cpp.

References QgsAbstractFeatureIterator::deref(), mIter, and QgsAbstractFeatureIterator::ref().

bool QgsFeatureIterator::rewind

(

)

[inline]

Definition at line 117 of file qgsfeatureiterator.h.

References mIter, and QgsAbstractFeatureIterator::rewind().

Referenced by QgsVectorLayerFeatureIterator::rewind(), and QgsCachedFeatureWriterIterator::rewind().

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Friends And Related Function Documentation

bool operator!=	(	const QgsFeatureIterator &	fi1,
		const QgsFeatureIterator &	fi2
	)		[friend]

Definition at line 137 of file qgsfeatureiterator.h.

bool operator==	(	const QgsFeatureIterator &	fi1,
		const QgsFeatureIterator &	fi2
	)		[friend]

Definition at line 133 of file qgsfeatureiterator.h.

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Member Data Documentation

QgsAbstractFeatureIterator* QgsFeatureIterator::mIter [protected]

Definition at line 82 of file qgsfeatureiterator.h.

Referenced by close(), isClosed(), nextFeature(), operator=(), operator==(), QgsFeatureIterator(), rewind(), and ~QgsFeatureIterator().

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

• src/core/qgsfeatureiterator.h
• src/core/qgsfeatureiterator.cpp