Change Version (Data Management)
Summary
Each input feature layer or table view will have its workspace modified to connect to the requested version.
Usage
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Only works with feature layers and table views.
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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.
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Transactional and historical views are supported.
Syntax
| Parameter | Explanation | Data Type |
in_features |
The Input Feature Layer or Table View to connect to using the specified version. | Feature Layer |
version_type |
The type of version to change to.
| 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
The following Python window script demonstrates how to use the ChangeVersion function in immediate mode.
import arcpy
from arcpy import env
env.workspace = r'Database 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','','','')
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.
arcpy.MakeFeatureLayer_management(arcpy.SelectLayerByLocation_management("RedlandsStreams","WITHIN_A_DISTANCE","RedlandsStreets","100 Meters","NEW_SELECTION",'#'), '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.
arcpy.MakeFeatureLayer_management(arcpy.SelectLayerByLocation_management("RedlandsStreams","WITHIN_A_DISTANCE","RedlandsStreets","100 Meters","NEW_SELECTION",'#'), 'NewStreamsNearStreets','','','')
print "Streams projected to be within 100 Meters of streets after proposed street additions: " + str(arcpy.GetCount_management("NewStreamsNearStreets"))