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b1cadb1822
have specific icons, instead of generic qgis icon We consider these 'top level' algorithms, and using the standard algorithm icon should help reflect this and differentiate them from 3rd party algorithms.
71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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TruncateTable.py
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-----------------------
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Date : January 2017
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Copyright : (C) 2017 by Nyall Dawson
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Email : nyall dot dawson at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Nyall Dawson'
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__date__ = 'January 2017'
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__copyright__ = '(C) 2017, Nyall Dawson'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.core import (QgsApplication,
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QgsFeatureSink,
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QgsProcessingUtils)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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from processing.core.parameters import ParameterTable
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from processing.core.outputs import OutputVector
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from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
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class TruncateTable(QgisAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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def tags(self):
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return self.tr('empty,delete,layer,clear,features').split(',')
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def group(self):
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return self.tr('Vector general tools')
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def __init__(self):
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super().__init__()
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self.addParameter(ParameterTable(self.INPUT,
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self.tr('Input Layer')))
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self.addOutput(OutputVector(self.OUTPUT,
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self.tr('Truncated layer'), True))
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def name(self):
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return 'truncatetable'
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def displayName(self):
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return self.tr('Truncate table')
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def processAlgorithm(self, parameters, context, feedback):
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file_name = self.getParameterValue(self.INPUT)
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layer = QgsProcessingUtils.mapLayerFromString(file_name, context)
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provider = layer.dataProvider()
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if not provider.truncate():
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raise GeoAlgorithmExecutionException(
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self.tr('Could not truncate table.'))
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self.setOutputValue(self.OUTPUT, file_name)
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