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84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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PostGISExecuteSQL.py
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---------------------
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Date : October 2012
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Copyright : (C) 2012 by Victor Olaya and Carterix Geomatics
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Email : volayaf 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__ = 'Victor Olaya, Carterix Geomatics'
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__date__ = 'October 2012'
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__copyright__ = '(C) 2012, Victor Olaya, Carterix Geomatics'
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from qgis.core import (
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QgsProcessingException,
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QgsProcessingParameterString,
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QgsProcessingParameterProviderConnection,
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QgsProviderRegistry,
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QgsProviderConnectionException
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)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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class PostGISExecuteSQL(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 groupId(self):
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return 'database'
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def __init__(self):
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super().__init__()
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def initAlgorithm(self, config=None):
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db_param = QgsProcessingParameterProviderConnection(
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self.DATABASE,
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self.tr('Database (connection name)'), 'postgres')
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self.addParameter(db_param)
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self.addParameter(QgsProcessingParameterString(self.SQL, self.tr('SQL query'), multiLine=True))
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def name(self):
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return 'postgisexecutesql'
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def displayName(self):
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return self.tr('PostgreSQL execute SQL')
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def shortDescription(self):
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return self.tr('Executes a SQL command on a PostgreSQL database')
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def tags(self):
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return self.tr('postgis,database').split(',')
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def processAlgorithm(self, parameters, context, feedback):
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connection_name = self.parameterAsConnectionName(parameters, self.DATABASE, context)
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# resolve connection details to uri
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try:
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md = QgsProviderRegistry.instance().providerMetadata('postgres')
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conn = md.createConnection(connection_name)
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except QgsProviderConnectionException:
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raise QgsProcessingException(self.tr('Could not retrieve connection details for {}').format(connection_name))
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sql = self.parameterAsString(parameters, self.SQL, context).replace('\n', ' ')
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try:
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conn.executeSql(sql)
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except QgsProviderConnectionException as e:
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raise QgsProcessingException(self.tr('Error executing SQL:\n{0}').format(e))
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return {}
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