mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-04 00:30:59 -05:00
b1cadb1822
have specific icons, instead of generic qgis icon We consider these 'top level' algorithms, and using the standard algorithm icon should help reflect this and differentiate them from 3rd party algorithms.
147 lines
6.0 KiB
Python
147 lines
6.0 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
ImportIntoSpatialite.py
|
|
---------------------
|
|
Date : October 2016
|
|
Copyright : (C) 2016 by Mathieu Pellerin
|
|
Email : nirvn dot asia at gmail dot com
|
|
***************************************************************************
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__author__ = 'Mathieu Pellerin'
|
|
__date__ = 'October 2016'
|
|
__copyright__ = '(C) 2012, Mathieu Pellerin'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
from qgis.core import (QgsDataSourceUri,
|
|
QgsFeatureSink,
|
|
QgsVectorLayerExporter,
|
|
QgsApplication,
|
|
QgsProcessingUtils)
|
|
|
|
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
|
|
from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
|
|
from processing.core.parameters import ParameterBoolean
|
|
from processing.core.parameters import ParameterVector
|
|
from processing.core.parameters import ParameterString
|
|
from processing.core.parameters import ParameterTableField
|
|
from processing.tools import spatialite
|
|
|
|
|
|
class ImportIntoSpatialite(QgisAlgorithm):
|
|
|
|
DATABASE = 'DATABASE'
|
|
TABLENAME = 'TABLENAME'
|
|
INPUT = 'INPUT'
|
|
OVERWRITE = 'OVERWRITE'
|
|
CREATEINDEX = 'CREATEINDEX'
|
|
GEOMETRY_COLUMN = 'GEOMETRY_COLUMN'
|
|
LOWERCASE_NAMES = 'LOWERCASE_NAMES'
|
|
DROP_STRING_LENGTH = 'DROP_STRING_LENGTH'
|
|
FORCE_SINGLEPART = 'FORCE_SINGLEPART'
|
|
PRIMARY_KEY = 'PRIMARY_KEY'
|
|
ENCODING = 'ENCODING'
|
|
|
|
def group(self):
|
|
return self.tr('Database')
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.addParameter(ParameterVector(self.INPUT, self.tr('Layer to import')))
|
|
self.addParameter(ParameterVector(self.DATABASE, self.tr('File database'), False, False))
|
|
self.addParameter(ParameterString(self.TABLENAME, self.tr('Table to import to (leave blank to use layer name)'), optional=True))
|
|
self.addParameter(ParameterTableField(self.PRIMARY_KEY, self.tr('Primary key field'), self.INPUT, optional=True))
|
|
self.addParameter(ParameterString(self.GEOMETRY_COLUMN, self.tr('Geometry column'), 'geom'))
|
|
self.addParameter(ParameterString(self.ENCODING, self.tr('Encoding'), 'UTF-8', optional=True))
|
|
self.addParameter(ParameterBoolean(self.OVERWRITE, self.tr('Overwrite'), True))
|
|
self.addParameter(ParameterBoolean(self.CREATEINDEX, self.tr('Create spatial index'), True))
|
|
self.addParameter(ParameterBoolean(self.LOWERCASE_NAMES, self.tr('Convert field names to lowercase'), True))
|
|
self.addParameter(ParameterBoolean(self.DROP_STRING_LENGTH, self.tr('Drop length constraints on character fields'), False))
|
|
self.addParameter(ParameterBoolean(self.FORCE_SINGLEPART, self.tr('Create single-part geometries instead of multi-part'), False))
|
|
|
|
def name(self):
|
|
return 'importintospatialite'
|
|
|
|
def displayName(self):
|
|
return self.tr('Import into Spatialite')
|
|
|
|
def processAlgorithm(self, parameters, context, feedback):
|
|
database = self.getParameterValue(self.DATABASE)
|
|
uri = QgsDataSourceUri(database)
|
|
if uri.database() is '':
|
|
if '|layerid' in database:
|
|
database = database[:database.find('|layerid')]
|
|
uri = QgsDataSourceUri('dbname=\'%s\'' % (database))
|
|
db = spatialite.GeoDB(uri)
|
|
|
|
overwrite = self.getParameterValue(self.OVERWRITE)
|
|
createIndex = self.getParameterValue(self.CREATEINDEX)
|
|
convertLowerCase = self.getParameterValue(self.LOWERCASE_NAMES)
|
|
dropStringLength = self.getParameterValue(self.DROP_STRING_LENGTH)
|
|
forceSinglePart = self.getParameterValue(self.FORCE_SINGLEPART)
|
|
primaryKeyField = self.getParameterValue(self.PRIMARY_KEY) or 'id'
|
|
encoding = self.getParameterValue(self.ENCODING)
|
|
|
|
layerUri = self.getParameterValue(self.INPUT)
|
|
layer = QgsProcessingUtils.mapLayerFromString(layerUri, context)
|
|
|
|
table = self.getParameterValue(self.TABLENAME)
|
|
if table:
|
|
table.strip()
|
|
if not table or table == '':
|
|
table = layer.name()
|
|
table = table.replace(' ', '').lower()
|
|
providerName = 'spatialite'
|
|
|
|
geomColumn = self.getParameterValue(self.GEOMETRY_COLUMN)
|
|
if not geomColumn:
|
|
geomColumn = 'the_geom'
|
|
|
|
options = {}
|
|
if overwrite:
|
|
options['overwrite'] = True
|
|
if convertLowerCase:
|
|
options['lowercaseFieldNames'] = True
|
|
geomColumn = geomColumn.lower()
|
|
if dropStringLength:
|
|
options['dropStringConstraints'] = True
|
|
if forceSinglePart:
|
|
options['forceSinglePartGeometryType'] = True
|
|
|
|
# Clear geometry column for non-geometry tables
|
|
if not layer.hasGeometryType():
|
|
geomColumn = None
|
|
|
|
uri = db.uri
|
|
uri.setDataSource('', table, geomColumn, '', primaryKeyField)
|
|
|
|
if encoding:
|
|
layer.setProviderEncoding(encoding)
|
|
|
|
(ret, errMsg) = QgsVectorLayerExporter.exportLayer(
|
|
layer,
|
|
uri.uri(),
|
|
providerName,
|
|
self.crs,
|
|
False,
|
|
options,
|
|
)
|
|
if ret != 0:
|
|
raise GeoAlgorithmExecutionException(
|
|
self.tr('Error importing to Spatialite\n{0}').format(errMsg))
|
|
|
|
if geomColumn and createIndex:
|
|
db.create_spatial_index(table, geomColumn)
|