2012-10-04 19:33:47 +02:00
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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AutoincrementalField.py
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---------------------
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Date : August 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__ = 'August 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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2012-09-15 18:25:25 +03:00
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from sextante.core.GeoAlgorithm import GeoAlgorithm
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from PyQt4.QtCore import *
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from qgis.core import *
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from sextante.parameters.ParameterVector import ParameterVector
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from sextante.core.QGisLayers import QGisLayers
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from sextante.outputs.OutputVector import OutputVector
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import os
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from PyQt4 import QtGui
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class AutoincrementalField(GeoAlgorithm):
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INPUT = "INPUT"
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OUTPUT = "OUTPUT"
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2012-12-20 00:16:05 +01:00
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#===========================================================================
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# def getIcon(self):
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# return QtGui.QIcon(os.path.dirname(__file__) + "/../images/toolbox.png")
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#===========================================================================
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2012-09-15 18:25:25 +03:00
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def processAlgorithm(self, progress):
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output = self.getOutputFromName(self.OUTPUT)
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vlayer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
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vprovider = vlayer.dataProvider()
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allAttrs = vprovider.attributeIndexes()
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vprovider.select( allAttrs )
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fields = vprovider.fields()
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fields[len(fields)] = QgsField("AUTO", QVariant.Int)
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writer = output.getVectorWriter(fields, vprovider.geometryType(), vprovider.crs() )
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inFeat = QgsFeature()
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outFeat = QgsFeature()
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inGeom = QgsGeometry()
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nFeat = vprovider.featureCount()
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nElement = 0
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while vprovider.nextFeature(inFeat):
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progress.setPercentage(int((100 * nElement)/nFeat))
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nElement += 1
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inGeom = inFeat.geometry()
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outFeat.setGeometry( inGeom )
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atMap = inFeat.attributeMap()
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outFeat.setAttributeMap( atMap )
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outFeat.addAttribute( len(vprovider.fields()), QVariant(nElement) )
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writer.addFeature( outFeat )
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del writer
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def defineCharacteristics(self):
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self.name = "Add autoincremental field"
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2012-12-20 00:16:05 +01:00
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self.group = "Vector table tools"
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2012-09-15 18:25:25 +03:00
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self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
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self.addOutput(OutputVector(self.OUTPUT, "Output layer"))
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