Change Version (Data Management)

Summary

Each input feature layer or table view will have its workspace modified to connect to the requested version.

Usage

• Only works with feature layers and table views.

• The ArcSDE connection file used to create the input feature layer or table view will not be edited by this tool. Only the open workspace of the Feature Layer/Table View is changed to connect to the specified version.

• Transactional and historical views are supported.

Syntax

ChangeVersion_management (in_features, version_type, {version_name}, {date})

Parameter	Explanation	Data Type
in_features	The feature layer or table view to connect to using the specified version.	Feature Layer; Table View
version_type	The type of version to change to. TRANSACTIONAL —Connect to a defined state of the database. HISTORICAL —Connect to a version representing a defined moment in time, often specified by a time or Historical Marker.	String
version_name (Optional)	Name of the version to change to. Optional if using historical versions.	String
date (Optional)	Date of the historical version to change to.	Date

Code Sample

ChangeVersion Example (Python Window)

The following Python window script demonstrates how to use the ChangeVersion function in immediate mode.

import arcpy
from arcpy import env
env.workspace = r'c:\Connections\toolbox.sde'
arcpy.MakeFeatureLayer_management(r'TOOLBOX.Redlands\TOOLBOX.street','RedlandsStreets')
arcpy.MakeFeatureLayer_management(r'TOOLBOX.Redlands\TOOLBOX.streams','RedlandsStreams')
arcpy.MakeFeatureLayer_management(arcpy.SelectLayerByLocation_management("RedlandsStreams","WITHIN_A_DISTANCE","RedlandsStreets","100 Meters","NEW_SELECTION",'#'),
                                  'StreamsNearStreets','','','')
arcpy.ChangeVersion_management('RedlandsStreets','TRANSACTIONAL', 'TOOLBOX.proposedStreets2k9','')
arcpy.MakeFeatureLayer_management(arcpy.SelectLayerByLocation_management("RedlandsStreams","WITHIN_A_DISTANCE","RedlandsStreets","100 Meters","NEW_SELECTION",'#'),
                                  'NewStreamsNearStreets','','','')

ChangeVersion example (Stand-alone script)

Use the ChangeVersion tool in a typical versioned analysis workflow.

# Name: ChangeVersion.py
# Description: Use the ChangeVersion tool in a typical versioned analysis workflow.
#              Quick check of additional streams within a pre-determined distance
#              of new proposed street development.
# Author: ESRI

# Import system modules 
import arcpy
from arcpy import env
import sys, os

# Set environments
env.workspace = sys.path[0] + os.sep + "toolbox.sde"

# Create the layers
arcpy.MakeFeatureLayer_management(r'TOOLBOX.Redlands\TOOLBOX.street','RedlandsStreets')
arcpy.MakeFeatureLayer_management(r'TOOLBOX.Redlands\TOOLBOX.streams','RedlandsStreams')

# Perform analysis on the Default version to determine
# current number of streams within 100 meters of streets.
selection1 = arcpy.SelectLayerByLocation_management("RedlandsStreams",
                                                    "WITHIN_A_DISTANCE",
                                                    "RedlandsStreets",
                                                    "100 Meters",
                                                    "NEW_SELECTION",
                                                    '#')
arcpy.MakeFeatureLayer_management(selection1,'StreamsNearStreets','','','')
print "Streams within 100 Meters of current streets: " + \
      str(arcpy.GetCount_management("StreamsNearStreets"))

# Change to the development version
arcpy.ChangeVersion_management('RedlandsStreets',
                               'TRANSACTIONAL',
                               'TOOLBOX.proposedStreets2k9',
                               '')

# Perform the same analysis on the development version to see the effect of the proposed changes.
selection2 = arcpy.SelectLayerByLocation_management("RedlandsStreams",
                                                   "WITHIN_A_DISTANCE",
                                                   "RedlandsStreets",
                                                   "100 Meters",
                                                   "NEW_SELECTION",
                                                   '#')
arcpy.MakeFeatureLayer_management(selection2,'NewStreamsNearStreets','','','')
print "Streams projected to be within 100 Meters of streets after proposed street additions: " + \
      str(arcpy.GetCount_management("NewStreamsNearStreets"))

Environments

This tool does not use any geoprocessing environments

Licensing Information

ArcGIS for Desktop Basic: No

ArcGIS for Desktop Standard: Yes

ArcGIS for Desktop Advanced: Yes