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add Processing tool to import layers/tables as geometryless tables in… 
…to postgresql
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Giovanni Manghi committed Feb 2, 2015
1 parent 6e94688 commit 53712c7
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3 changes: 2 additions & 1 deletion python/plugins/processing/algs/gdal/GdalOgrAlgorithmProvider.py
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Expand Up @@ -70,6 +70,7 @@
from ogr2ogrclipextent import Ogr2OgrClipExtent
from ogr2ogrtopostgis import Ogr2OgrToPostGis
from ogr2ogrtopostgislist import Ogr2OgrToPostGisList
from ogr2ogrtabletopostgislist import Ogr2OgrTableToPostGisList
from ogrinfo import OgrInfo
from ogrsql import OgrSql

Expand Down Expand Up @@ -124,7 +125,7 @@ def createAlgsList(self):
GridDataMetrics(),
# ----- OGR tools -----
OgrInfo(), Ogr2Ogr(), Ogr2OgrClip(), Ogr2OgrClipExtent(),
Ogr2OgrToPostGis(), Ogr2OgrToPostGisList(), OgrSql(),
Ogr2OgrToPostGis(), Ogr2OgrToPostGisList(), Ogr2OgrTableToPostGisList(), OgrSql(),
]

# And then we add those that are created as python scripts
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194 changes: 194 additions & 0 deletions python/plugins/processing/algs/gdal/ogr2ogrtabletopostgislist.py
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@@ -0,0 +1,194 @@
# -*- coding: utf-8 -*-

"""
***************************************************************************
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. *
* *
***************************************************************************
"""

__author__ = 'Victor Olaya'
__date__ = 'November 2012'
__copyright__ = '(C) 2012, Victor Olaya'

# This will get replaced with a git SHA1 when you do a git archive

__revision__ = '$Format:%H$'

from PyQt4.QtCore import QSettings

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

from processing.tools.system import isWindows

from processing.algs.gdal.OgrAlgorithm import OgrAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils

class Ogr2OgrTableToPostGisList(OgrAlgorithm):

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'

def dbConnectionNames(self):
settings = QSettings()
settings.beginGroup('/PostgreSQL/connections/')
return settings.childGroups()

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))

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))

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)

commands = []
if isWindows():
commands = ['cmd.exe', '/C ', 'ogr2ogr.exe',
GdalUtils.escapeAndJoin(arguments)]
else:
commands = ['ogr2ogr', GdalUtils.escapeAndJoin(arguments)]

GdalUtils.runGdal(commands, progress)

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