mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-30 00:07:09 -04:00
68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
TruncateTable.py
|
|
-----------------------
|
|
Date : January 2017
|
|
Copyright : (C) 2017 by Nyall Dawson
|
|
Email : nyall dot dawson at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__author__ = 'Nyall Dawson'
|
|
__date__ = 'January 2017'
|
|
__copyright__ = '(C) 2017, Nyall Dawson'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
from qgis.core import (QgsProcessingParameterVectorLayer,
|
|
QgsProcessingOutputVectorLayer,
|
|
QgsProcessingException)
|
|
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
|
|
|
|
|
|
class TruncateTable(QgisAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
OUTPUT = 'OUTPUT'
|
|
|
|
def tags(self):
|
|
return self.tr('empty,delete,layer,clear,features').split(',')
|
|
|
|
def group(self):
|
|
return self.tr('Vector general')
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
|
|
def initAlgorithm(self, config=None):
|
|
self.addParameter(QgsProcessingParameterVectorLayer(self.INPUT,
|
|
self.tr('Input Layer')))
|
|
self.addOutput(QgsProcessingOutputVectorLayer(self.OUTPUT, self.tr('Truncated layer')))
|
|
|
|
def name(self):
|
|
return 'truncatetable'
|
|
|
|
def displayName(self):
|
|
return self.tr('Truncate table')
|
|
|
|
def processAlgorithm(self, parameters, context, feedback):
|
|
layer = self.parameterAsVectorLayer(parameters, self.INPUT, context)
|
|
provider = layer.dataProvider()
|
|
|
|
if not provider.truncate():
|
|
raise QgsProcessingException(
|
|
self.tr('Could not truncate table.'))
|
|
|
|
return {self.OUTPUT: layer.id()}
|