Class: QgsTransactionGroup

Represents a transaction group.

Class Hierarchy

Base classes

QObject

Methods

addLayer	Add a layer to this transaction group.
connString	Returns the connection string used by this transaction group.
isEmpty	Returns True if there are no layers in this transaction group.
layers	Gets the set of layers currently managed by this transaction group.
modified	Returns True if any of the layers in this group reports a modification.
providerKey	Returns the provider key used by this transaction group.

Signals

commitError

Will be emitted whenever there is a commit error

class qgis.core.QgsTransactionGroup

Bases: QObject

__init__(parent: QObject | None = None)

Constructor for QgsTransactionGroup

Parameters:

parent (Optional[QObject] = None)

addLayer(self, layer: QgsVectorLayer | None) → bool

Add a layer to this transaction group.

Will return True if it is compatible and has been added.

Parameters:

layer (Optional[QgsVectorLayer])

Return type:

bool

signal commitError(msg: str)

Will be emitted whenever there is a commit error

Parameters:

msg (str)

connString(self) → str

Returns the connection string used by this transaction group. Layers need be compatible when added.

Return type:

str

isEmpty(self) → bool

Returns True if there are no layers in this transaction group.

Return type:

bool

layers(self) → Set[QgsVectorLayer]

Gets the set of layers currently managed by this transaction group.

Return type:

Set[QgsVectorLayer]

Returns:

Layer set

modified(self) → bool

Returns True if any of the layers in this group reports a modification.

Return type:

bool

providerKey(self) → str

Returns the provider key used by this transaction group. Layers need be compatible when added.

Return type:

str