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83 lines
3.1 KiB
Python
83 lines
3.1 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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SpatialiteExecuteSQL.py
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---------------------
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Date : October 2016
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Copyright : (C) 2016 by Mathieu Pellerin
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Email : nirvn dot asia 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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from builtins import str
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__author__ = 'Mathieu Pellerin'
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__date__ = 'October 2016'
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__copyright__ = '(C) 2016, Mathieu Pellerin'
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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 (QgsDataSourceUri,
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QgsApplication,
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QgsProcessingParameterVectorLayer,
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QgsProcessingParameterString)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
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from processing.tools import spatialite
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class SpatialiteExecuteSQL(QgisAlgorithm):
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DATABASE = 'DATABASE'
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SQL = 'SQL'
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def group(self):
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return self.tr('Database')
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def __init__(self):
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super().__init__()
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self.addParameter(QgsProcessingParameterVectorLayer(self.DATABASE, self.tr('File Database'), False, False))
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self.addParameter(QgsProcessingParameterString(self.SQL, self.tr('SQL query'), '', True))
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self.database = None
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self.sql = None
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def name(self):
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return 'spatialiteexecutesql'
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def displayName(self):
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return self.tr('Spatialite execute SQL')
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def prepareAlgorithm(self, parameters, context, feedback):
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self.database = self.parameterAsVectorLayer(parameters, self.DATABASE, context)
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self.sql = self.parameterAsString(parameters, self.SQL, context).replace('\n', ' ')
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return True
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def processAlgorithm(self, context, feedback):
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databaseuri = self.database.dataProvider().dataSourceUri()
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uri = QgsDataSourceUri(databaseuri)
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if uri.database() is '':
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if '|layerid' in databaseuri:
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databaseuri = databaseuri[:databaseuri.find('|layerid')]
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uri = QgsDataSourceUri('dbname=\'%s\'' % (databaseuri))
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db = spatialite.GeoDB(uri)
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try:
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db._exec_sql_and_commit(str(self.sql))
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except spatialite.DbError as e:
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raise GeoAlgorithmExecutionException(
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self.tr('Error executing SQL:\n{0}').format(str(e)))
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return True
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def postProcessAlgorithm(self, context, feedback):
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return {}
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