mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-25 00:58:06 -05:00
157 lines
6.3 KiB
Python
157 lines
6.3 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
ImportIntoPostGIS.py
|
|
---------------------
|
|
Date : October 2012
|
|
Copyright : (C) 2012 by Victor Olaya
|
|
Email : volayaf 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__ = 'Victor Olaya'
|
|
__date__ = 'October 2012'
|
|
__copyright__ = '(C) 2012, Victor Olaya'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
import os
|
|
from PyQt4.QtCore import *
|
|
from PyQt4.QtGui import *
|
|
from qgis.core import *
|
|
from processing.core.GeoAlgorithm import GeoAlgorithm
|
|
from processing.core.GeoAlgorithmExecutionException import \
|
|
GeoAlgorithmExecutionException
|
|
from processing.parameters.ParameterBoolean import ParameterBoolean
|
|
from processing.parameters.ParameterVector import ParameterVector
|
|
from processing.parameters.ParameterString import ParameterString
|
|
from processing.parameters.ParameterSelection import ParameterSelection
|
|
from processing.parameters.ParameterTableField import ParameterTableField
|
|
from processing.tools import dataobjects
|
|
import postgis_utils
|
|
|
|
|
|
class ImportIntoPostGIS(GeoAlgorithm):
|
|
|
|
DATABASE = 'DATABASE'
|
|
TABLENAME = 'TABLENAME'
|
|
SCHEMA = 'SCHEMA'
|
|
INPUT = 'INPUT'
|
|
OVERWRITE = 'OVERWRITE'
|
|
CREATEINDEX = 'CREATEINDEX'
|
|
GEOMETRY_COLUMN = 'GEOMETRY_COLUMN'
|
|
LOWERCASE_NAMES = 'LOWERCASE_NAMES'
|
|
DROP_STRING_LENGTH = 'DROP_STRING_LENGTH'
|
|
PRIMARY_KEY = 'PRIMARY_KEY'
|
|
|
|
def getIcon(self):
|
|
return QIcon(os.path.dirname(__file__) + '/../../images/postgis.png')
|
|
|
|
def processAlgorithm(self, progress):
|
|
connection = self.DB_CONNECTIONS[self.getParameterValue(self.DATABASE)]
|
|
schema = self.getParameterValue(self.SCHEMA)
|
|
overwrite = self.getParameterValue(self.OVERWRITE)
|
|
createIndex = self.getParameterValue(self.CREATEINDEX)
|
|
convertLowerCase = self.getParameterValue(self.LOWERCASE_NAMES)
|
|
dropStringLength = self.getParameterValue(self.DROP_STRING_LENGTH)
|
|
primaryKeyField = self.getParameterValue(self.PRIMARY_KEY)
|
|
settings = QSettings()
|
|
mySettings = '/PostgreSQL/connections/' + connection
|
|
try:
|
|
database = settings.value(mySettings + '/database')
|
|
username = settings.value(mySettings + '/username')
|
|
host = settings.value(mySettings + '/host')
|
|
port = settings.value(mySettings + '/port', type=int)
|
|
password = settings.value(mySettings + '/password')
|
|
except Exception, e:
|
|
raise GeoAlgorithmExecutionException(
|
|
'Wrong database connection name: ' + connection)
|
|
|
|
table = self.getParameterValue(self.TABLENAME)
|
|
table.replace(' ', '')
|
|
providerName = 'postgres'
|
|
|
|
try:
|
|
db = postgis_utils.GeoDB(host=host, port=port, dbname=database,
|
|
user=username, passwd=password)
|
|
except postgis_utils.DbError, e:
|
|
raise GeoAlgorithmExecutionException(
|
|
"Couldn't connect to database:\n" + e.message)
|
|
|
|
geomColumn = self.getParameterValue(self.GEOMETRY_COLUMN)
|
|
if not geomColumn:
|
|
geomColumn = 'the_geom'
|
|
|
|
uri = QgsDataSourceURI()
|
|
uri.setConnection(host, str(port), database, username, password)
|
|
if primaryKeyField:
|
|
uri.setDataSource(schema, table, geomColumn, '', primaryKeyField)
|
|
else:
|
|
uri.setDataSource(schema, table, geomColumn, '')
|
|
|
|
options = {}
|
|
if overwrite:
|
|
options['overwrite'] = True
|
|
if convertLowerCase:
|
|
options['lowercaseFieldNames'] = True
|
|
if dropStringLength:
|
|
options['dropStringConstraints'] = True
|
|
layerUri = self.getParameterValue(self.INPUT)
|
|
layer = dataobjects.getObjectFromUri(layerUri)
|
|
(ret, errMsg) = QgsVectorLayerImport.importLayer(
|
|
layer,
|
|
uri.uri(),
|
|
providerName,
|
|
self.crs,
|
|
False,
|
|
False,
|
|
options,
|
|
)
|
|
if ret != 0:
|
|
raise GeoAlgorithmExecutionException(
|
|
'Error importing to PostGIS\n%s' % errMsg)
|
|
|
|
if createIndex:
|
|
db.create_spatial_index(table, schema, geomColumn)
|
|
|
|
db.vacuum_analyze(table, schema)
|
|
|
|
def dbConnectionNames(self):
|
|
settings = QSettings()
|
|
settings.beginGroup('/PostgreSQL/connections/')
|
|
return settings.childGroups()
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = 'Import into PostGIS'
|
|
self.group = 'PostGIS management tools'
|
|
self.addParameter(ParameterVector(self.INPUT, 'Layer to import'))
|
|
|
|
self.DB_CONNECTIONS = self.dbConnectionNames()
|
|
self.addParameter(ParameterSelection(self.DATABASE, 'Database (connection name)',
|
|
self.DB_CONNECTIONS))
|
|
|
|
self.addParameter(ParameterString(self.SCHEMA, 'Schema (schema name)'))
|
|
self.addParameter(ParameterString(self.TABLENAME, 'Table to import to'
|
|
))
|
|
self.addParameter(ParameterTableField(self.PRIMARY_KEY, 'Primary key field',
|
|
self.INPUT, optional=True))
|
|
self.addParameter(ParameterString(self.GEOMETRY_COLUMN, 'Geometry column', 'the_geom'
|
|
))
|
|
self.addParameter(ParameterBoolean(self.OVERWRITE, 'Overwrite', True))
|
|
self.addParameter(ParameterBoolean(self.CREATEINDEX,
|
|
'Create spatial index', True))
|
|
self.addParameter(ParameterBoolean(self.LOWERCASE_NAMES,
|
|
'Convert field names to lowercase', False))
|
|
self.addParameter(ParameterBoolean(self.DROP_STRING_LENGTH,
|
|
'Drop length constraints on character fields', False))
|