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91 lines
3.0 KiB
Python
91 lines
3.0 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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ogrsql.py
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---------------------
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Date : November 2012
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Copyright : (C) 2012 by Victor Olaya
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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'
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__date__ = 'November 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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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 processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
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from processing.core.parameters import ParameterVector
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from processing.core.parameters import ParameterString
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from processing.core.parameters import ParameterSelection
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from processing.core.outputs import OutputVector
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from processing.algs.gdal.GdalUtils import GdalUtils
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from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
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from processing.tools.vector import ogrConnectionString
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DIALECTS = [None, 'ogrsql', 'sqlite']
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class OgrSql(GdalAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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SQL = 'SQL'
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DIALECT = 'DIALECT'
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def defineCharacteristics(self):
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self.name, self.i18n_name = self.trAlgorithm('Execute SQL')
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self.group, self.i18n_group = self.trAlgorithm('[OGR] Miscellaneous')
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self.addParameter(ParameterVector(self.INPUT, self.tr('Input layer')))
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self.addParameter(ParameterString(self.SQL, self.tr('SQL'), ''))
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self.addParameter(ParameterSelection(
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self.DIALECT,
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self.tr('Dialect'),
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DIALECTS)
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)
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self.addOutput(OutputVector(self.OUTPUT, self.tr('SQL result')))
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def getConsoleCommands(self):
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sql = self.getParameterValue(self.SQL)
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if sql == '':
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raise GeoAlgorithmExecutionException(
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self.tr('Empty SQL. Please enter valid SQL expression and try again.'))
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arguments = []
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arguments.append('-sql')
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arguments.append(sql)
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dialectIdx = self.getParameterValue(self.DIALECT)
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dialect = DIALECTS[dialectIdx]
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if dialect:
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arguments.append("-dialect")
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arguments.append(dialect)
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output = self.getOutputFromName(self.OUTPUT)
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outFile = output.value
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arguments.append(outFile)
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layer = self.getParameterValue(self.INPUT)
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conn = ogrConnectionString(layer)[1:-1]
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arguments.append(conn)
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return ['ogr2ogr', GdalUtils.escapeAndJoin(arguments)]
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