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add Processing tool to import layers/tables as geometryless tables in…
…to postgresql
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Giovanni Manghi
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python/plugins/processing/algs/gdal/ogr2ogrtabletopostgislist.py
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# -*- coding: utf-8 -*- | ||
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""" | ||
*************************************************************************** | ||
ogr2ogrtabletopostgislist.py | ||
--------------------- | ||
Date : November 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. * | ||
* * | ||
*************************************************************************** | ||
""" | ||
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__author__ = 'Victor Olaya' | ||
__date__ = 'November 2012' | ||
__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 QSettings | ||
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from processing.core.parameters import ParameterVector | ||
from processing.core.parameters import ParameterString | ||
from processing.core.parameters import ParameterTable | ||
from processing.core.parameters import ParameterCrs | ||
from processing.core.parameters import ParameterSelection | ||
from processing.core.parameters import ParameterBoolean | ||
from processing.core.parameters import ParameterExtent | ||
from processing.core.parameters import ParameterTableField | ||
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from processing.tools.system import isWindows | ||
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from processing.algs.gdal.OgrAlgorithm import OgrAlgorithm | ||
from processing.algs.gdal.GdalUtils import GdalUtils | ||
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class Ogr2OgrTableToPostGisList(OgrAlgorithm): | ||
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DATABASE = 'DATABASE' | ||
INPUT_LAYER = 'INPUT_LAYER' | ||
HOST = 'HOST' | ||
PORT= 'PORT' | ||
USER = 'USER' | ||
DBNAME = 'DBNAME' | ||
PASSWORD = 'PASSWORD' | ||
SCHEMA = 'SCHEMA' | ||
TABLE = 'TABLE' | ||
PK = 'PK' | ||
PRIMARY_KEY = 'PRIMARY_KEY' | ||
WHERE = 'WHERE' | ||
GT = 'GT' | ||
OVERWRITE = 'OVERWRITE' | ||
APPEND = 'APPEND' | ||
ADDFIELDS = 'ADDFIELDS' | ||
LAUNDER = 'LAUNDER' | ||
SKIPFAILURES = 'SKIPFAILURES' | ||
PRECISION = 'PRECISION' | ||
OPTIONS = 'OPTIONS' | ||
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def dbConnectionNames(self): | ||
settings = QSettings() | ||
settings.beginGroup('/PostgreSQL/connections/') | ||
return settings.childGroups() | ||
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def defineCharacteristics(self): | ||
self.name = 'Import layer/table as table into PostGIS database (available connections)' | ||
self.group = '[OGR] Miscellaneous' | ||
self.DB_CONNECTIONS = self.dbConnectionNames() | ||
self.addParameter(ParameterSelection(self.DATABASE, | ||
self.tr('Database (connection name)'), self.DB_CONNECTIONS)) | ||
self.addParameter(ParameterTable(self.INPUT_LAYER, | ||
self.tr('Input layer'))) | ||
self.addParameter(ParameterString(self.SCHEMA, | ||
self.tr('Schema name'), 'public', optional=True)) | ||
self.addParameter(ParameterString(self.TABLE, | ||
self.tr('Table name, leave blank to use input name'), | ||
'', optional=True)) | ||
self.addParameter(ParameterString(self.PK, | ||
self.tr('Primary key'), 'id', optional=True)) | ||
self.addParameter(ParameterTableField(self.PRIMARY_KEY, | ||
self.tr('Primary key (existing field, used if the above option is left empty)'), self.INPUT_LAYER, optional=True)) | ||
self.addParameter(ParameterString(self.WHERE, | ||
self.tr('Select features using a SQL "WHERE" statement (Ex: column="value")'), | ||
'', optional=True)) | ||
self.addParameter(ParameterString(self.GT, | ||
self.tr('Group N features per transaction (Default: 20000)'), | ||
'', optional=True)) | ||
self.addParameter(ParameterBoolean(self.OVERWRITE, | ||
self.tr('Overwrite existing table'), True)) | ||
self.addParameter(ParameterBoolean(self.APPEND, | ||
self.tr('Append to existing table'), False)) | ||
self.addParameter(ParameterBoolean(self.ADDFIELDS, | ||
self.tr('Append and add new fields to existing table'), False)) | ||
self.addParameter(ParameterBoolean(self.LAUNDER, | ||
self.tr('Do not launder columns/table names'), False)) | ||
self.addParameter(ParameterBoolean(self.SKIPFAILURES, | ||
self.tr('Continue after a failure, skipping the failed record'), | ||
False)) | ||
self.addParameter(ParameterBoolean(self.PRECISION, | ||
self.tr('Keep width and precision of input attributes'), | ||
True)) | ||
self.addParameter(ParameterString(self.OPTIONS, | ||
self.tr('Additional creation options'), '', optional=True)) | ||
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def processAlgorithm(self, progress): | ||
connection = self.DB_CONNECTIONS[self.getParameterValue(self.DATABASE)] | ||
settings = QSettings() | ||
mySettings = '/PostgreSQL/connections/' + connection | ||
dbname = settings.value(mySettings + '/database') | ||
user = settings.value(mySettings + '/username') | ||
host = settings.value(mySettings + '/host') | ||
port = settings.value(mySettings + '/port') | ||
password = settings.value(mySettings + '/password') | ||
inLayer = self.getParameterValue(self.INPUT_LAYER) | ||
ogrLayer = self.ogrConnectionString(inLayer)[1:-1] | ||
schema = unicode(self.getParameterValue(self.SCHEMA)) | ||
schemastring = "-lco SCHEMA="+schema | ||
table = unicode(self.getParameterValue(self.TABLE)) | ||
pk = unicode(self.getParameterValue(self.PK)) | ||
pkstring = "-lco FID="+pk | ||
primary_key = self.getParameterValue(self.PRIMARY_KEY) | ||
where = unicode(self.getParameterValue(self.WHERE)) | ||
wherestring = "-where '"+where+"'" | ||
gt = unicode(self.getParameterValue(self.GT)) | ||
overwrite = self.getParameterValue(self.OVERWRITE) | ||
append = self.getParameterValue(self.APPEND) | ||
addfields = self.getParameterValue(self.ADDFIELDS) | ||
launder = self.getParameterValue(self.LAUNDER) | ||
launderstring = "-lco LAUNDER=NO" | ||
skipfailures = self.getParameterValue(self.SKIPFAILURES) | ||
precision = self.getParameterValue(self.PRECISION) | ||
options = unicode(self.getParameterValue(self.OPTIONS)) | ||
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arguments = [] | ||
arguments.append('-progress') | ||
arguments.append('--config PG_USE_COPY YES') | ||
arguments.append('-f') | ||
arguments.append('PostgreSQL') | ||
arguments.append('PG:"host=') | ||
arguments.append(host) | ||
arguments.append('port=') | ||
arguments.append(port) | ||
if len(dbname) > 0: | ||
arguments.append('dbname='+dbname) | ||
if len(password) > 0: | ||
arguments.append('password='+password) | ||
arguments.append('user='+user+'"') | ||
arguments.append(ogrLayer) | ||
arguments.append('-nlt NONE') | ||
arguments.append(self.ogrLayerName(inLayer)) | ||
if launder: | ||
arguments.append(launderstring) | ||
if append: | ||
arguments.append('-append') | ||
if addfields: | ||
arguments.append('-addfields') | ||
if overwrite: | ||
arguments.append('-overwrite') | ||
if len(schema) > 0: | ||
arguments.append(schemastring) | ||
if len(pk) > 0: | ||
arguments.append(pkstring) | ||
elif primary_key != None: | ||
arguments.append("-lco FID="+primary_key) | ||
if len(table) > 0: | ||
arguments.append('-nln') | ||
arguments.append(table) | ||
if skipfailures: | ||
arguments.append('-skipfailures') | ||
if where: | ||
arguments.append(wherestring) | ||
if len(gt) > 0: | ||
arguments.append('-gt') | ||
arguments.append(gt) | ||
if precision is False: | ||
arguments.append('-lco PRECISION=NO') | ||
if len(options) > 0: | ||
arguments.append(options) | ||
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commands = [] | ||
if isWindows(): | ||
commands = ['cmd.exe', '/C ', 'ogr2ogr.exe', | ||
GdalUtils.escapeAndJoin(arguments)] | ||
else: | ||
commands = ['ogr2ogr', GdalUtils.escapeAndJoin(arguments)] | ||
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GdalUtils.runGdal(commands, progress) |