Class: QgsVectorLayerUndoPassthroughCommandUpdate¶
- class qgis.core.QgsVectorLayerUndoPassthroughCommandUpdate¶
Bases:
QgsVectorLayerUndoPassthroughCommand
Undo command for running a specific sql query in transaction group.
New in version 3.0.
QgsVectorLayerUndoPassthroughCommandUpdate(buffer:
QgsVectorLayerEditBuffer
, transaction:QgsTransaction
, sql: str, name: str) Constructor forQgsVectorLayerUndoCommandUpdate
- Parameters
buffer – associated edit buffer
transaction – transaction running the sql query
sql – the query
name –
The name of the command
Methods
Returns the error message or an empty string if there's none.
Rollback command, release savepoint or set error status save point must be set prior to call error satus should be
False
prior to callSet error flag and append "failed" to text
Sets the error message.
Set the command savepoint or set error status.
- errorMessage(self) str ¶
Returns the error message or an empty string if there’s none.
New in version 3.0.
- redo(self)¶
- rollBackToSavePoint(self) bool ¶
Rollback command, release savepoint or set error status save point must be set prior to call error satus should be
False
prior to call
- setError(self)¶
Set error flag and append “failed” to text
- setErrorMessage(self, errorMessage: str)¶
Sets the error message.
New in version 3.0.
- setSavePoint(self, savePointId: str = '') bool ¶
Set the command savepoint or set error status. Error satus should be
False
prior to call. If the savepoint given in parameter is empty, then a new one is created if none is currently available in the transaction.
- undo(self)¶