QgsFeatureIterator Class Reference

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

#include <qgsfeatureiterator.h>

Collaboration diagram for QgsFeatureIterator:

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
QgsFeatureIterator &	operator= (const QgsFeatureIterator &other)
bool	nextFeature (QgsFeature &f)
bool	rewind ()
bool	close ()
bool	isClosed () const
	find out whether the iterator is still valid or closed already

Protected Attributes
QgsAbstractFeatureIterator *	mIter

Friends
bool	operator== (const QgsFeatureIterator &fi1, const QgsFeatureIterator &fi2)
bool	operator!= (const QgsFeatureIterator &fi1, const QgsFeatureIterator &fi2)

Detailed Description

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

Definition at line 111 of file qgsfeatureiterator.h.

Constructor & Destructor Documentation

QgsFeatureIterator::QgsFeatureIterator ( )

inline

construct invalid iterator

Definition at line 141 of file qgsfeatureiterator.h.

QgsFeatureIterator::QgsFeatureIterator ( QgsAbstractFeatureIterator *  iter )

inline

construct a valid iterator

Definition at line 146 of file qgsfeatureiterator.h.

References QgsAbstractFeatureIterator::ref().

QgsFeatureIterator::QgsFeatureIterator ( const QgsFeatureIterator &  fi )

inline

copy constructor copies the iterator, increases ref.count

Definition at line 153 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 160 of file qgsfeatureiterator.h.

References QgsAbstractFeatureIterator::deref(), and mIter.

Member Function Documentation

bool QgsFeatureIterator::close ( )

inline

Definition at line 176 of file qgsfeatureiterator.h.

References QgsAbstractFeatureIterator::close(), and mIter.

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

bool QgsFeatureIterator::isClosed ( ) const

inline

find out whether the iterator is still valid or closed already

Definition at line 181 of file qgsfeatureiterator.h.

References QgsAbstractFeatureIterator::mClosed, and mIter.

Referenced by QgsVectorLayerFeatureIterator::fetchFeature().

bool QgsFeatureIterator::nextFeature ( QgsFeature &  f )

inline

Definition at line 166 of file qgsfeatureiterator.h.

References mIter, and QgsAbstractFeatureIterator::nextFeature().

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

QgsFeatureIterator & QgsFeatureIterator::operator=

(

const QgsFeatureIterator &

other

)

Definition at line 143 of file qgsfeatureiterator.cpp.

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

bool QgsFeatureIterator::rewind ( )

inline

Definition at line 171 of file qgsfeatureiterator.h.

References mIter, and QgsAbstractFeatureIterator::rewind().

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

Friends And Related Function Documentation

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

friend

Definition at line 191 of file qgsfeatureiterator.h.

bool operator== ( const QgsFeatureIterator &  fi1, const QgsFeatureIterator &  fi2  )

friend

Definition at line 186 of file qgsfeatureiterator.h.

Member Data Documentation

QgsAbstractFeatureIterator* QgsFeatureIterator::mIter

protected

Definition at line 136 of file qgsfeatureiterator.h.

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

---

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

• /tmp/buildd/qgis-2.2.0+wheezy1/src/core/qgsfeatureiterator.h
• /tmp/buildd/qgis-2.2.0+wheezy1/src/core/qgsfeatureiterator.cpp