#include <qgsvectorlayereditpassthrough.h>

Inheritance diagram for QgsVectorLayerEditPassthrough:

[legend]

Public Member Functions
	QgsVectorLayerEditPassthrough (QgsVectorLayer *layer)

bool	addAttribute (const QgsField &field) override
	Adds an attribute field (but does not commit it) returns `true` if the field was added.

bool	addFeature (QgsFeature &f) override
	Adds a feature.

bool	addFeatures (QgsFeatureList &features) override
	Insert a copy of the given features into the layer (but does not commit it)

bool	changeAttributeValue (QgsFeatureId fid, int field, const QVariant &newValue, const QVariant &oldValue=QVariant()) override
	Changed an attribute value (but does not commit it)

bool	changeAttributeValues (QgsFeatureId fid, const QgsAttributeMap &newValues, const QgsAttributeMap &oldValues) override
	Changes values of attributes (but does not commit it).

bool	changeGeometry (QgsFeatureId fid, const QgsGeometry &geom) override
	Change feature's geometry.

bool	commitChanges (QStringList &commitErrors) override
	Attempts to commit any changes to disk.

bool	deleteAttribute (int attr) override
	Deletes an attribute field (but does not commit it)

bool	deleteFeature (QgsFeatureId fid) override
	Delete a feature from the layer (but does not commit it)

bool	deleteFeatures (const QgsFeatureIds &fids) override
	Deletes a set of features from the layer (but does not commit it)

bool	isModified () const override
	Returns `true` if the provider has been modified since the last commit.

bool	renameAttribute (int attr, const QString &newName) override
	Renames an attribute field (but does not commit it)

void	rollBack () override
	Stop editing and discard the edits.

bool	update (QgsTransaction *transaction, const QString &sql, const QString &name)
	Update underlying data with a SQL query embedded in a transaction.

Public Member Functions inherited from QgsVectorLayerEditBuffer
	QgsVectorLayerEditBuffer (QgsVectorLayer *layer)

QList< QgsField >	addedAttributes () const
	Returns a list of added attributes fields which are not committed.

QgsFeatureMap	addedFeatures () const
	Returns a map of new features which are not committed.

QgsFeatureIds	allAddedOrEditedFeatures () const
	Returns a list of the features IDs for all newly added or edited features in the buffer.

QgsChangedAttributesMap	changedAttributeValues () const
	Returns a map of features with changed attributes values which are not committed.

QgsGeometryMap	changedGeometries () const
	Returns a map of features with changed geometries which are not committed.

QgsAttributeList	deletedAttributeIds () const
	Returns a list of deleted attributes fields which are not committed.

QgsFeatureIds	deletedFeatureIds () const
	Returns a list of deleted feature IDs which are not committed.

QgsVectorLayerEditBufferGroup *	editBufferGroup () const
	Returns the parent edit buffer group for this edit buffer, or nullptr if not part of a group.

bool	isAttributeDeleted (int index) const
	Returns `true` if the specified attribute has been deleted but not committed.

bool	isFeatureAdded (QgsFeatureId id) const
	Returns `true` if the specified feature ID has been added but not committed.

bool	isFeatureAttributesChanged (QgsFeatureId id) const
	Returns `true` if the specified feature ID has had an attribute changed but not committed.

bool	isFeatureDeleted (QgsFeatureId id) const
	Returns `true` if the specified feature ID has been deleted but not committed.

bool	isFeatureGeometryChanged (QgsFeatureId id) const
	Returns `true` if the specified feature ID has had its geometry changed but not committed.

void	setEditBufferGroup (QgsVectorLayerEditBufferGroup *editBufferGroup)
	Set the parent edit buffer group for this edit buffer.

void	updateFields (QgsFields &fields)
	Updates fields.

Additional Inherited Members
Signals inherited from QgsVectorLayerEditBuffer
void	attributeAdded (int idx)
	Emitted when an attribute was added to the buffer.

void	attributeDeleted (int idx)
	Emitted when an attribute was deleted from the buffer.

void	attributeRenamed (int idx, const QString &newName)
	Emitted when an attribute has been renamed.

void	attributeValueChanged (QgsFeatureId fid, int idx, const QVariant &value)
	Emitted when a feature's attribute value has been changed.

void	committedAttributesAdded (const QString &layerId, const QList< QgsField > &addedAttributes)
	Emitted after attribute addition has been committed to the layer.

void	committedAttributesDeleted (const QString &layerId, const QgsAttributeList &deletedAttributes)
	Emitted after attribute deletion has been committed to the layer.

void	committedAttributesRenamed (const QString &layerId, const QgsFieldNameMap &renamedAttributes)
	Emitted after committing an attribute rename.

void	committedAttributeValuesChanges (const QString &layerId, const QgsChangedAttributesMap &changedAttributesValues)
	Emitted after feature attribute value changes have been committed to the layer.

void	committedFeaturesAdded (const QString &layerId, const QgsFeatureList &addedFeatures)
	Emitted after feature addition has been committed to the layer.

void	committedFeaturesRemoved (const QString &layerId, const QgsFeatureIds &deletedFeatureIds)
	Emitted after feature removal has been committed to the layer.

void	committedGeometriesChanges (const QString &layerId, const QgsGeometryMap &changedGeometries)
	Emitted after feature geometry changes have been committed to the layer.

void	featureAdded (QgsFeatureId fid)
	Emitted when a feature has been added to the buffer.

void	featureDeleted (QgsFeatureId fid)
	Emitted when a feature was deleted from the buffer.

void	geometryChanged (QgsFeatureId fid, const QgsGeometry &geom)
	Emitted when a feature's geometry is changed.

void	layerModified ()
	Emitted when modifications has been done on layer.

Protected Slots inherited from QgsVectorLayerEditBuffer
void	undoIndexChanged (int index)

Protected Member Functions inherited from QgsVectorLayerEditBuffer
	QgsVectorLayerEditBuffer ()=default

void	handleAttributeAdded (int index)
	Update added and changed features after addition of an attribute.

void	handleAttributeDeleted (int index)
	Update added and changed features after removal of an attribute.

void	updateAttributeMapIndex (QgsAttributeMap &attrs, int index, int offset) const
	Updates an index in an attribute map to a new value (for updates of changed attributes)

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

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

void	updateLayerFields ()

Protected Attributes inherited from QgsVectorLayerEditBuffer
QgsVectorLayer *	L = nullptr

QList< QgsField >	mAddedAttributes
	Added attributes fields which are not committed.

QgsFeatureMap	mAddedFeatures
	New features which are not committed.

int	mBlockModifiedSignals = 0

QgsChangedAttributesMap	mChangedAttributeValues
	Changed attributes values which are not committed.

QgsGeometryMap	mChangedGeometries
	Changed geometries which are not committed.

QgsAttributeList	mDeletedAttributeIds
	Deleted attributes fields which are not committed. The list is kept sorted.

QgsFeatureIds	mDeletedFeatureIds
	Deleted feature IDs which are not committed.

QgsVectorLayerEditBufferGroup *	mEditBufferGroup = nullptr

QgsFieldNameMap	mRenamedAttributes
	Renamed attributes which are not committed.

Detailed Description

Definition at line 35 of file qgsvectorlayereditpassthrough.h.

Constructor & Destructor Documentation

◆ QgsVectorLayerEditPassthrough()

QgsVectorLayerEditPassthrough::QgsVectorLayerEditPassthrough ( QgsVectorLayer * layer )

Definition at line 22 of file qgsvectorlayereditpassthrough.cpp.

Member Function Documentation

◆ addAttribute()

bool QgsVectorLayerEditPassthrough::addAttribute ( const QgsField & field )

overridevirtual

Adds an attribute field (but does not commit it) returns true if the field was added.

Reimplemented from QgsVectorLayerEditBuffer.

Definition at line 94 of file qgsvectorlayereditpassthrough.cpp.

◆ addFeature()

bool QgsVectorLayerEditPassthrough::addFeature ( QgsFeature & f )

overridevirtual

Adds a feature.

Parameters

f	feature to add

Returns: true in case of success and false in case of error

Reimplemented from QgsVectorLayerEditBuffer.

Definition at line 48 of file qgsvectorlayereditpassthrough.cpp.

◆ addFeatures()

bool QgsVectorLayerEditPassthrough::addFeatures ( QgsFeatureList & features )

overridevirtual

Insert a copy of the given features into the layer (but does not commit it)

Reimplemented from QgsVectorLayerEditBuffer.

Definition at line 59 of file qgsvectorlayereditpassthrough.cpp.

◆ changeAttributeValue()

bool QgsVectorLayerEditPassthrough::changeAttributeValue	(	QgsFeatureId	fid,
		int	field,
		const QVariant &	newValue,
		const QVariant &	oldValue = `QVariant()`
	)

overridevirtual

Changed an attribute value (but does not commit it)

Reimplemented from QgsVectorLayerEditBuffer.

Definition at line 84 of file qgsvectorlayereditpassthrough.cpp.

◆ changeAttributeValues()

bool QgsVectorLayerEditPassthrough::changeAttributeValues	(	QgsFeatureId	fid,
		const QgsAttributeMap &	newValues,
		const QgsAttributeMap &	oldValues
	)

overridevirtual

Changes values of attributes (but does not commit it).

Returns: true if attributes are well updated, false otherwise

Reimplemented from QgsVectorLayerEditBuffer.

Definition at line 89 of file qgsvectorlayereditpassthrough.cpp.

◆ changeGeometry()

bool QgsVectorLayerEditPassthrough::changeGeometry	(	QgsFeatureId	fid,
		const QgsGeometry &	geom
	)

overridevirtual

Change feature's geometry.

Reimplemented from QgsVectorLayerEditBuffer.

Definition at line 79 of file qgsvectorlayereditpassthrough.cpp.

◆ commitChanges()

bool QgsVectorLayerEditPassthrough::commitChanges ( QStringList & commitErrors )

overridevirtual

Attempts to commit any changes to disk.

Returns the result of the attempt. If a commit fails, the in-memory changes are left alone.

This allows editing to continue if the commit failed on e.g. a disallowed value in a Postgres database - the user can re-edit and try again.

The commits occur in distinct stages, (add attributes, add features, change attribute values, change geometries, delete features, delete attributes) so if a stage fails, it's difficult to roll back cleanly. Therefore any error message also includes which stage failed so that the user has some chance of repairing the damage cleanly.

Reimplemented from QgsVectorLayerEditBuffer.

Definition at line 109 of file qgsvectorlayereditpassthrough.cpp.