Uses another iterator as backend and writes features to the cache. More...

Inheritance diagram for QgsCachedFeatureWriterIterator:

Public Member Functions
	QgsCachedFeatureWriterIterator (QgsVectorLayerCache *vlCache, const QgsFeatureRequest &featureRequest)
	This constructor creates a feature iterator, which queries the backend and caches retrieved features. More...

virtual bool	close () override
	Close this iterator. More...

virtual bool	rewind () override
	Rewind to the beginning of the iterator. More...

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...

CompileStatus	compileStatus () const
	Returns the status of expression compilation for filter expression requests. More...

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

virtual void	setInterruptionChecker (QgsInterruptionChecker *interruptionChecker)
	Attach an object that can be queried regularly by the iterator to check if it must stopped. More...

Protected Member Functions
virtual bool	fetchFeature (QgsFeature &f) override
	Implementation for fetching a feature. More...

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

virtual bool	nextFeatureFilterExpression (QgsFeature &f)
	By default, the iterator will fetch all features and check if the feature matches the expression. More...

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

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

void	ref ()
	add reference More...

Additional Inherited Members
Public Types inherited from QgsAbstractFeatureIterator
enum	CompileStatus { NoCompilation, PartiallyCompiled, Compiled }
	Status of expression compilation for filter expression requests. More...

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

CompileStatus	mCompileStatus
	Status of compilation of filter expression. 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...