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78 lines
2.6 KiB
Python
78 lines
2.6 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 PyQt4.QtCore import *
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from PyQt4.QtGui import *
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from qgis.core import *
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from processing.core.GeoAlgorithmExecutionException import \
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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.outputs import OutputVector
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from processing.algs.gdal.GdalUtils import GdalUtils
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from processing.algs.gdal.OgrAlgorithm import OgrAlgorithm
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class OgrSql(OgrAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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SQL = 'SQL'
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def defineCharacteristics(self):
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self.name = 'Execute SQL'
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self.group = '[OGR] Miscellaneous'
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self.addParameter(ParameterVector(self.INPUT, 'Input layer',
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[ParameterVector.VECTOR_TYPE_ANY], False))
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self.addParameter(ParameterString(self.SQL, 'SQL', ''))
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self.addOutput(OutputVector(self.OUTPUT, 'SQL result'))
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def processAlgorithm(self, progress):
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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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'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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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 = self.ogrConnectionString(layer)
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arguments.append(conn)
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GdalUtils.runGdal(['ogr2ogr', GdalUtils.escapeAndJoin(arguments)],
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progress)
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