#include <qgsvectorlayerfeatureiterator.h>

Inheritance diagram for QgsVectorLayerFeatureIterator:

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

Public Member Functions
	QgsVectorLayerFeatureIterator (QgsVectorLayerFeatureSource *source, bool ownSource, const QgsFeatureRequest &request)

	~QgsVectorLayerFeatureIterator ()

virtual bool	close () override
	end of iterating: free the resources / lock More...

virtual bool	rewind () override
	reset the iterator to the starting position More...

Public Member Functions inherited from QgsAbstractFeatureIteratorFromSource< QgsVectorLayerFeatureSource >
	QgsAbstractFeatureIteratorFromSource (QgsVectorLayerFeatureSource *source, bool ownSource, const QgsFeatureRequest &request)

	~QgsAbstractFeatureIteratorFromSource ()

Public Member Functions inherited from QgsAbstractFeatureIterator
	QgsAbstractFeatureIterator (const QgsFeatureRequest &request)
	base class constructor - stores the iteration parameters More...

virtual	~QgsAbstractFeatureIterator ()
	destructor makes sure that the iterator is closed properly More...

virtual bool	nextFeature (QgsFeature &f)
	fetch next feature, return true on success More...

Protected Member Functions
void	addJoinedAttributes (QgsFeature &f)

void	addVirtualAttributes (QgsFeature &f)
	Adds attributes that don't source from the provider but are added inside QGIS Includes. More...

virtual bool	fetchFeature (QgsFeature &feature) override
	fetch next feature, return true on success More...

bool	fetchNextAddedFeature (QgsFeature &f)

bool	fetchNextChangedAttributeFeature (QgsFeature &f)

bool	fetchNextChangedGeomFeature (QgsFeature &f)

bool	nextFeatureFid (QgsFeature &f)

virtual bool	nextFeatureFilterExpression (QgsFeature &f) override
	Overrides default method as we only need to filter features in the edit buffer while for others filtering is left to the provider implementation. More...

void	prepareExpressions ()

void	prepareJoins ()

virtual bool	prepareSimplification (const QgsSimplifyMethod &simplifyMethod) override
	Setup the simplification of geometries to fetch using the specified simplify method. More...

void	rewindEditBuffer ()

void	updateChangedAttributes (QgsFeature &f)
	Update feature with uncommited attribute updates. More...

void	updateFeatureGeometry (QgsFeature &f)
	Update feature with uncommited geometry updates. More...

void	useAddedFeature (const QgsFeature &src, QgsFeature &f)

void	useChangedAttributeFeature (QgsFeatureId fid, const QgsGeometry &geom, QgsFeature &f)

Protected Member Functions inherited from QgsAbstractFeatureIteratorFromSource< QgsVectorLayerFeatureSource >
void	iteratorClosed ()
	to be called by from subclass in close() More...

Protected Member Functions inherited from QgsAbstractFeatureIterator
void	deref ()
	remove reference, delete if refs == 0 More...

virtual bool	nextFeatureFilterFids (QgsFeature &f)
	By default, the iterator will fetch all features and check if the id is in the request. More...

void	ref ()
	add reference More...

Protected Attributes
QgsFeatureIterator	mChangedFeaturesIterator

QgsFeatureRequest	mChangedFeaturesRequest

QMap< int, QgsExpression * >	mExpressionFieldInfo

QgsFeatureMap::ConstIterator	mFetchAddedFeaturesIt

QgsGeometryMap::ConstIterator	mFetchChangedGeomIt

QSet< QgsFeatureId >	mFetchConsidered

bool	mFetchedFid

QMap< const QgsVectorJoinInfo *, FetchJoinInfo >	mFetchJoinInfo
	Information about joins used in the current select() statement. More...

bool	mHasVirtualAttributes

QgsFeatureIterator	mProviderIterator

QgsFeatureRequest	mProviderRequest

Protected Attributes inherited from QgsAbstractFeatureIteratorFromSource< QgsVectorLayerFeatureSource >
bool	mOwnSource

QgsVectorLayerFeatureSource *	mSource

Protected Attributes inherited from QgsAbstractFeatureIterator
bool	mClosed
	Set to true, as soon as the iterator is closed. More...

long	mFetchedCount
	Number of features already fetched by iterator. More...

QgsFeatureRequest	mRequest
	A copy of the feature request. More...

bool	mZombie
	A feature iterator may be closed already but still be serving features from the cache. More...

int	refs
	reference counting (to allow seamless copying of QgsFeatureIterator instances) TODO QGIS3: make this private More...

Detailed Description

Definition at line 74 of file qgsvectorlayerfeatureiterator.h.

Constructor & Destructor Documentation

QgsVectorLayerFeatureIterator::QgsVectorLayerFeatureIterator	(	QgsVectorLayerFeatureSource *	source,
		bool	ownSource,
		const QgsFeatureRequest &	request
	)

Definition at line 93 of file qgsvectorlayerfeatureiterator.cpp.

QgsVectorLayerFeatureIterator::~QgsVectorLayerFeatureIterator ( )

Definition at line 185 of file qgsvectorlayerfeatureiterator.cpp.

Member Function Documentation

void QgsVectorLayerFeatureIterator::addJoinedAttributes ( QgsFeature & f )

protected

Note: not available in Python bindings

Definition at line 583 of file qgsvectorlayerfeatureiterator.cpp.

void QgsVectorLayerFeatureIterator::addVirtualAttributes ( QgsFeature & f )

protected

Adds attributes that don't source from the provider but are added inside QGIS Includes.

Joined fields
Expression fields

Parameters

f	The feature will be modified

Note: not available in Python bindings

Definition at line 603 of file qgsvectorlayerfeatureiterator.cpp.

bool QgsVectorLayerFeatureIterator::close ( )

overridevirtual

end of iterating: free the resources / lock

Implements QgsAbstractFeatureIterator.

Definition at line 300 of file qgsvectorlayerfeatureiterator.cpp.

bool QgsVectorLayerFeatureIterator::fetchFeature ( QgsFeature & feature )

overrideprotectedvirtual

fetch next feature, return true on success

Implements QgsAbstractFeatureIterator.

Definition at line 197 of file qgsvectorlayerfeatureiterator.cpp.

bool QgsVectorLayerFeatureIterator::fetchNextAddedFeature ( QgsFeature & f )

protected

Note: not available in Python bindings

Definition at line 316 of file qgsvectorlayerfeatureiterator.cpp.

bool QgsVectorLayerFeatureIterator::fetchNextChangedAttributeFeature ( QgsFeature & f )

protected

Note: not available in Python bindings

Definition at line 396 of file qgsvectorlayerfeatureiterator.cpp.

bool QgsVectorLayerFeatureIterator::fetchNextChangedGeomFeature ( QgsFeature & f )

protected

Note: not available in Python bindings

Definition at line 369 of file qgsvectorlayerfeatureiterator.cpp.

bool QgsVectorLayerFeatureIterator::nextFeatureFid ( QgsFeature & f )

protected

Note: not available in Python bindings

Definition at line 775 of file qgsvectorlayerfeatureiterator.cpp.

virtual bool QgsVectorLayerFeatureIterator::nextFeatureFilterExpression ( QgsFeature & f )

inlineoverrideprotectedvirtual

Overrides default method as we only need to filter features in the edit buffer while for others filtering is left to the provider implementation.

Reimplemented from QgsAbstractFeatureIterator.

Definition at line 93 of file qgsvectorlayerfeatureiterator.h.

void QgsVectorLayerFeatureIterator::prepareExpressions ( )

protected

Note: not available in Python bindings

Definition at line 532 of file qgsvectorlayerfeatureiterator.cpp.

void QgsVectorLayerFeatureIterator::prepareJoins ( )

protected

Note: not available in Python bindings

Definition at line 477 of file qgsvectorlayerfeatureiterator.cpp.

bool QgsVectorLayerFeatureIterator::prepareSimplification ( const QgsSimplifyMethod & simplifyMethod )

overrideprotectedvirtual

Setup the simplification of geometries to fetch using the specified simplify method.

Reimplemented from QgsAbstractFeatureIterator.

Definition at line 628 of file qgsvectorlayerfeatureiterator.cpp.

bool QgsVectorLayerFeatureIterator::rewind ( )

overridevirtual

reset the iterator to the starting position

Implements QgsAbstractFeatureIterator.

Definition at line 282 of file qgsvectorlayerfeatureiterator.cpp.

void QgsVectorLayerFeatureIterator::rewindEditBuffer ( )

protected

Note: not available in Python bindings

Definition at line 467 of file qgsvectorlayerfeatureiterator.cpp.

void QgsVectorLayerFeatureIterator::updateChangedAttributes ( QgsFeature & f )

protected

Update feature with uncommited attribute updates.

Note: not available in Python bindings

Definition at line 816 of file qgsvectorlayerfeatureiterator.cpp.

void QgsVectorLayerFeatureIterator::updateFeatureGeometry ( QgsFeature & f )

protected

Update feature with uncommited geometry updates.

Note: not available in Python bindings

Definition at line 839 of file qgsvectorlayerfeatureiterator.cpp.

void QgsVectorLayerFeatureIterator::useAddedFeature	(	const QgsFeature &	src,
		QgsFeature &	f
	)

protected

Note: not available in Python bindings

Definition at line 340 of file qgsvectorlayerfeatureiterator.cpp.

void QgsVectorLayerFeatureIterator::useChangedAttributeFeature	(	QgsFeatureId	fid,
		const QgsGeometry &	geom,
		QgsFeature &	f
	)

protected

Note: not available in Python bindings

Definition at line 422 of file qgsvectorlayerfeatureiterator.cpp.

Member Data Documentation

QgsFeatureIterator QgsVectorLayerFeatureIterator::mChangedFeaturesIterator

protected

Definition at line 159 of file qgsvectorlayerfeatureiterator.h.

QgsFeatureRequest QgsVectorLayerFeatureIterator::mChangedFeaturesRequest

protected

Definition at line 158 of file qgsvectorlayerfeatureiterator.h.

QMap<int, QgsExpression*> QgsVectorLayerFeatureIterator::mExpressionFieldInfo

protected

Definition at line 172 of file qgsvectorlayerfeatureiterator.h.

QgsFeatureMap::ConstIterator QgsVectorLayerFeatureIterator::mFetchAddedFeaturesIt

protected

Definition at line 164 of file qgsvectorlayerfeatureiterator.h.

QgsGeometryMap::ConstIterator QgsVectorLayerFeatureIterator::mFetchChangedGeomIt

protected

Definition at line 163 of file qgsvectorlayerfeatureiterator.h.

QSet<QgsFeatureId> QgsVectorLayerFeatureIterator::mFetchConsidered

protected

Definition at line 162 of file qgsvectorlayerfeatureiterator.h.

bool QgsVectorLayerFeatureIterator::mFetchedFid

protected

Definition at line 166 of file qgsvectorlayerfeatureiterator.h.

QMap<const QgsVectorJoinInfo*, FetchJoinInfo> QgsVectorLayerFeatureIterator::mFetchJoinInfo

protected

Information about joins used in the current select() statement.

Allows faster mapping of attribute ids compared to mVectorJoins

Definition at line 170 of file qgsvectorlayerfeatureiterator.h.

bool QgsVectorLayerFeatureIterator::mHasVirtualAttributes

protected

Definition at line 174 of file qgsvectorlayerfeatureiterator.h.

QgsFeatureIterator QgsVectorLayerFeatureIterator::mProviderIterator

protected

Definition at line 157 of file qgsvectorlayerfeatureiterator.h.

QgsFeatureRequest QgsVectorLayerFeatureIterator::mProviderRequest

protected

Definition at line 156 of file qgsvectorlayerfeatureiterator.h.

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

/tmp/buildd/qgis-2.14.0+99unstable/src/core/qgsvectorlayerfeatureiterator.h
/tmp/buildd/qgis-2.14.0+99unstable/src/core/qgsvectorlayerfeatureiterator.cpp

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation