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change Detection

  • September 24, 2019
  • 1 reply
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danpaoly
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I am trying to setup a workbench for change detection where multiple users will upload data for change detection. I need to be able to handle the following cases

1. User 1 adds features to fgdb and uploads. Writer fgdb has 4 features now

2. User 2 adds features to a separate fgdb that does not contain user 1 features. Writer fgdb has 8 features now

3. User 1 now has fgdb with all 8 records, he deletes two records and uploads. Writer fgdb should have 6 features now.

Here is a screenshot of my workbench. I can get item 2 to work but not 3.

 

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1 reply

thomas_g
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  • thomas_gContributor
  • Contributor
  • 13 replies
  • September 24, 2019

In this case you have to delete the connection coming from the "Deleted"-Port of the ChangeDetector, as you don't want to have these features in your Wrtiter-GDB. If there are any features in your Writer-GDB, you want to delete as well, you can check-in the "Overwrite existing Geodatabase"-Parameter or create the fme_db_operation - attribute on features coming out from the "Deleted"-Port and set them to the value "delete"

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