QgsCachedFeatureIterator Class Reference

Delivers features from the cache. More...

#include <qgscachedfeatureiterator.h>

Inheritance diagram for QgsCachedFeatureIterator:

Collaboration diagram for QgsCachedFeatureIterator:

Public Member Functions
	QgsCachedFeatureIterator (QgsVectorLayerCache *vlCache, QgsFeatureRequest featureRequest, QgsFeatureIds featureIds)
	This constructor creates a feature iterator, that delivers only cached information, based on the QgsFeatureIds.
virtual bool	nextFeature (QgsFeature &f)
virtual bool	rewind ()
virtual bool	close ()
Public Member Functions inherited from QgsAbstractFeatureIterator
	QgsAbstractFeatureIterator (const QgsFeatureRequest &request)
	base class constructor - stores the iteration parameters
virtual	~QgsAbstractFeatureIterator ()
	destructor makes sure that the iterator is closed properly

Private Attributes
QgsFeatureIds	mFeatureIds
QgsVectorLayerCache *	mVectorLayerCache
QgsFeatureIds::Iterator	mFeatureIdIterator

Additional Inherited Members
Protected Member Functions inherited from QgsAbstractFeatureIterator
void	ref ()
void	deref ()
Protected Attributes inherited from QgsAbstractFeatureIterator
QgsFeatureRequest	mRequest
bool	mClosed
int	refs

Detailed Description

Delivers features from the cache.

Definition at line 29 of file qgscachedfeatureiterator.h.

Constructor & Destructor Documentation

QgsCachedFeatureIterator::QgsCachedFeatureIterator	(	QgsVectorLayerCache *	vlCache,
		QgsFeatureRequest	featureRequest,
		QgsFeatureIds	featureIds
	)

This constructor creates a feature iterator, that delivers only cached information, based on the QgsFeatureIds.

No request is made to the backend.

Parameters

vlCache	The vector layer cache to use
featureRequest	The feature request to answer
featureIds	The feature ids to return

Definition at line 19 of file qgscachedfeatureiterator.cpp.

References mFeatureIdIterator.

Member Function Documentation

bool QgsCachedFeatureIterator::close ( )

virtual

Returns

bool

Implements QgsAbstractFeatureIterator.

Definition at line 48 of file qgscachedfeatureiterator.cpp.

bool QgsCachedFeatureIterator::nextFeature ( QgsFeature &  f )

virtual

Parameters

f

Returns

bool

Implements QgsAbstractFeatureIterator.

Definition at line 27 of file qgscachedfeatureiterator.cpp.

References QgsVectorLayerCache::mCache, mFeatureIdIterator, mFeatureIds, and mVectorLayerCache.

bool QgsCachedFeatureIterator::rewind ( )

virtual

Returns

bool

Implements QgsAbstractFeatureIterator.

Definition at line 42 of file qgscachedfeatureiterator.cpp.

References mFeatureIdIterator, and mFeatureIds.

Member Data Documentation

QgsFeatureIds::Iterator QgsCachedFeatureIterator::mFeatureIdIterator

private

Definition at line 68 of file qgscachedfeatureiterator.h.

Referenced by nextFeature(), QgsCachedFeatureIterator(), and rewind().

QgsFeatureIds QgsCachedFeatureIterator::mFeatureIds

private

Definition at line 66 of file qgscachedfeatureiterator.h.

Referenced by nextFeature(), and rewind().

QgsVectorLayerCache* QgsCachedFeatureIterator::mVectorLayerCache

private

Definition at line 67 of file qgscachedfeatureiterator.h.

Referenced by nextFeature().

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

• /tmp/buildd/qgis-2.0.1/src/core/qgscachedfeatureiterator.h
• /tmp/buildd/qgis-2.0.1/src/core/qgscachedfeatureiterator.cpp