Subgroup: Vector
Class: QgsVectorLayerEditBuffer¶
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class
qgis.core.
QgsVectorLayerEditBuffer
(layer: QgsVectorLayer)¶ Bases:
PyQt5.QtCore.QObject
QgsVectorLayerEditBuffer() Constructor for QgsVectorLayerEditBuffer
Methods
addAttribute
Add an attribute field (but does not commit it) addFeature
Adds a feature addFeatures
Insert a copy of the given features into the layer (but does not commit it) addedAttributes
Returns a list of added attributes fields which are not committed. addedFeatures
Returns a map of new features which are not committed. blockSignals
changeAttributeValue
Changed an attribute value (but does not commit it) changeGeometry
Change feature’s geometry changedAttributeValues
Returns a map of features with changed attributes values which are not committed. changedGeometries
Returns a map of features with changed geometries which are not committed. childEvent
children
commitChanges
Attempts to commit any changes to disk. connectNotify
customEvent
deleteAttribute
Delete an attribute field (but does not commit it) deleteFeature
Delete a feature from the layer (but does not commit it) deleteFeatures
Deletes a set of features from the layer (but does not commit it) deleteLater
deletedAttributeIds
Returns a list of deleted attributes fields which are not committed. deletedFeatureIds
Returns a list of deleted feature IDs which are not committed. disconnect
disconnectNotify
dumpObjectInfo
dumpObjectTree
dynamicPropertyNames
event
eventFilter
findChild
findChild(self, Tuple, name: str = ‘’, options: Union[Qt.FindChildOptions, Qt.FindChildOption] = Qt.FindChildrenRecursively) -> QObject findChildren
findChildren(self, Tuple, name: str = ‘’, options: Union[Qt.FindChildOptions, Qt.FindChildOption] = Qt.FindChildrenRecursively) -> List[QObject] handleAttributeAdded
Update added and changed features after addition of an attribute handleAttributeDeleted
Update added and changed features after removal of an attribute inherits
installEventFilter
isAttributeDeleted
Returns true if the specified attribute has been deleted but not committed. isFeatureAdded
Returns true if the specified feature ID has been added but not committed. isFeatureAttributesChanged
Returns true if the specified feature ID has had an attribute changed but not committed. isFeatureDeleted
Returns true if the specified feature ID has been deleted but not committed. isFeatureGeometryChanged
Returns true if the specified feature ID has had its geometry changed but not committed. isModified
Returns true if the provider has been modified since the last commit isSignalConnected
isWidgetType
isWindowType
killTimer
metaObject
moveToThread
objectName
parent
property
pyqtConfigure
Each keyword argument is either the name of a Qt property or a Qt signal. receivers
removeEventFilter
renameAttribute
Renames an attribute field (but does not commit it) rollBack
Stop editing and discard the edits sender
senderSignalIndex
setObjectName
setParent
setProperty
signalsBlocked
startTimer
thread
timerEvent
tr
undoIndexChanged
updateAttributeMapIndex
Updates an index in an attribute map to a new value (for updates of changed attributes) updateChangedAttributes
Update feature with uncommitted attribute updates updateFeatureGeometry
Update feature with uncommitted geometry updates updateFields
updateLayerFields
Attributes
attributeAdded
attributeAdded(self, int) [signal] attributeDeleted
attributeDeleted(self, int) [signal] attributeRenamed
Emitted when an attribute has been renamed attributeValueChanged
attributeValueChanged(self, int, int, Any) [signal] committedAttributeValuesChanges
committedAttributeValuesChanges(self, str, object) [signal] committedAttributesAdded
committedAttributesAdded(self, str, object) [signal] committedAttributesDeleted
Signals emitted after committing changes [signal] committedAttributesRenamed
Emitted after committing an attribute rename committedFeaturesAdded
committedFeaturesAdded(self, str, object) [signal] committedFeaturesRemoved
committedFeaturesRemoved(self, str, object) [signal] committedGeometriesChanges
committedGeometriesChanges(self, str, object) [signal] destroyed
destroyed(self, QObject = None) [signal] featureAdded
featureAdded(self, int) [signal] featureDeleted
featureDeleted(self, int) [signal] geometryChanged
Emitted when a feature’s geometry is changed. layerModified
This signal is emitted when modifications has been done on layer [signal] objectNameChanged
objectNameChanged(self, str) [signal] staticMetaObject
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addAttribute
(self, field: QgsField) → bool¶ Add an attribute field (but does not commit it) returns true if the field was added *
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addFeature
(self, f: QgsFeature) → bool¶ Adds a feature
Parameters: f – feature to add Returns: True in case of success and False in case of error
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addFeatures
(self, features: object) → bool¶ Insert a copy of the given features into the layer (but does not commit it)
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addedAttributes
(self) → object¶ Returns a list of added attributes fields which are not committed.
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addedFeatures
(self) → object¶ Returns a map of new features which are not committed.
See also
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attributeAdded
¶ attributeAdded(self, int) [signal]
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attributeDeleted
¶ attributeDeleted(self, int) [signal]
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attributeRenamed
¶ Emitted when an attribute has been renamed
Parameters: - idx – attribute index
- newName – new attribute name
New in version 2.16: [signal]
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attributeValueChanged
¶ attributeValueChanged(self, int, int, Any) [signal]
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changeAttributeValue
(self, fid: int, field: int, newValue: Any, oldValue: Any = None) → bool¶ Changed an attribute value (but does not commit it)
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changeGeometry
(self, fid: int, geom: QgsGeometry) → bool¶ Change feature’s geometry
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changedAttributeValues
(self) → object¶ Returns a map of features with changed attributes values which are not committed.
See also
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changedGeometries
(self) → object¶ Returns a map of features with changed geometries which are not committed.
See also
hasFeatureGeometryChange()
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childEvent
()¶
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commitChanges
(self, commitErrors: Iterable[str]) → bool¶ 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.
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committedAttributeValuesChanges
¶ committedAttributeValuesChanges(self, str, object) [signal]
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committedAttributesAdded
¶ committedAttributesAdded(self, str, object) [signal]
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committedAttributesDeleted
¶ Signals emitted after committing changes [signal]
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committedAttributesRenamed
¶ Emitted after committing an attribute rename
Parameters: - layerId – ID of layer
- renamedAttributes – map of field index to new name
New in version 2.16: [signal]
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committedFeaturesAdded
¶ committedFeaturesAdded(self, str, object) [signal]
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committedFeaturesRemoved
¶ committedFeaturesRemoved(self, str, object) [signal]
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committedGeometriesChanges
¶ committedGeometriesChanges(self, str, object) [signal]
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connectNotify
()¶
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customEvent
()¶
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deleteAttribute
(self, attr: int) → bool¶ Delete an attribute field (but does not commit it)
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deleteFeature
(self, fid: int) → bool¶ Delete a feature from the layer (but does not commit it)
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deleteFeatures
(self, fid: object) → bool¶ Deletes a set of features from the layer (but does not commit it)
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deletedAttributeIds
(self) → List[int]¶ Returns a list of deleted attributes fields which are not committed. The list is kept sorted.
See also
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deletedFeatureIds
(self) → object¶ Returns a list of deleted feature IDs which are not committed.
See also
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disconnectNotify
()¶
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featureAdded
¶ featureAdded(self, int) [signal]
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featureDeleted
¶ featureDeleted(self, int) [signal]
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geometryChanged
¶ Emitted when a feature’s geometry is changed.
Parameters: - fid – feature ID
- geom – new feature geometry [signal]
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handleAttributeAdded
(self, index: int)¶ Update added and changed features after addition of an attribute
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handleAttributeDeleted
(self, index: int)¶ Update added and changed features after removal of an attribute
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isAttributeDeleted
(self, index: int) → bool¶ Returns true if the specified attribute has been deleted but not committed.
Parameters: index – attribute index New in version 3.0.
See also
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isFeatureAdded
(self, id: int) → bool¶ Returns true if the specified feature ID has been added but not committed.
Parameters: id – feature ID New in version 3.0.
See also
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isFeatureAttributesChanged
(self, id: int) → bool¶ Returns true if the specified feature ID has had an attribute changed but not committed.
Parameters: id – feature ID New in version 3.0.
See also
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isFeatureDeleted
(self, id: int) → bool¶ Returns true if the specified feature ID has been deleted but not committed.
Parameters: id – feature ID New in version 3.0.
See also
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isFeatureGeometryChanged
(self, id: int) → bool¶ Returns true if the specified feature ID has had its geometry changed but not committed.
Parameters: id – feature ID New in version 3.0.
See also
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isModified
(self) → bool¶ Returns true if the provider has been modified since the last commit
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isSignalConnected
()¶
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layerModified
¶ This signal is emitted when modifications has been done on layer [signal]
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receivers
()¶
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renameAttribute
(self, attr: int, newName: str) → bool¶ Renames an attribute field (but does not commit it)
Parameters: - attr – attribute index
- newName – new name of field
New in version 2.16.
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rollBack
(self)¶ Stop editing and discard the edits
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sender
()¶
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senderSignalIndex
()¶
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timerEvent
()¶
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undoIndexChanged
(self, index: int)¶
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updateAttributeMapIndex
(self, attrs: Dict[int, Any], index: int, offset: int)¶ Updates an index in an attribute map to a new value (for updates of changed attributes)
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updateChangedAttributes
(self, f: QgsFeature)¶ Update feature with uncommitted attribute updates
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updateFeatureGeometry
(self, f: QgsFeature)¶ Update feature with uncommitted geometry updates
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updateFields
(self, fields: QgsFields)¶
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updateLayerFields
(self)¶
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