ERROR Origam.Server.Controller.AbstractController - A child row has multiple parents

support
1

I have a simple screen Event with Datastructure Event → EventCapacity. Relation property IsParentChild = true.

In Event I have aggregate field Capacity_Total, that sums EventCapacity.Capacity field.

When I create Screen with ScreenPanel where only fields from Event entity are used, I can happily open the form from Menu, create new record, delete or copy.

But when I put Capacity_Total into the ScreenPanel, then I can open the form, but wehn trying to duplicate record or create new record (plus sign) I get an error in log file

2025-06-12 17:15:14,762 [21] ERROR Origam.Server.Controller.AbstractController - A child row has multiple parents.
System.Data.DataException: A child row has multiple parents.
   at System.Data.DataRelation.GetParentRow(DataKey parentKey, DataKey childKey, DataRow childRow, DataRowVersion version)
   at System.Data.DataRow.GetParentRow(DataRelation relation, DataRowVersion version)
   at Origam.Server.SessionStore.IsChildRow(DataRow row, DataRow changedRow) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 900
   at Origam.Server.SessionStore.GetChangesRecursive(List`1 changes, String requestingGrid, DataRow row, Operation operation, DataRow changedRow, Boolean allDetails, Hashtable ignoreKeys, Boolean includeRowStates) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 814
   at Origam.Server.SessionStore.GetChangesRecursive(List`1 changes, String requestingGrid, DataRow row, Operation operation, DataRow changedRow, Boolean allDetails, Hashtable ignoreKeys, Boolean includeRowStates) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 862
   at Origam.Server.SessionStore.GetChangesByRow(String requestingGrid, DataRow row, Operation operation, Hashtable ignoreKeys, Boolean includeRowStates, Boolean hasErrors, Boolean hasChanges, Boolean fromTemplate) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 727
   at Origam.Server.SessionStore.GetChangesByRow(String requestingGrid, DataRow row, Operation operation, Boolean hasErrors, Boolean hasChanges, Boolean fromTemplate) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 703
   at Origam.Server.SessionStore.CreateObject(String entity, IDictionary`2 values, IDictionary`2 parameters, String requestingGrid) in D:\a\1\s\backend\Origam.Server\Session Stores\SessionStore.cs:line 1337
   at Origam.Server.SaveableSessionStore.CreateObject(String entity, IDictionary`2 values, IDictionary`2 parameters, String requestingGrid) in D:\a\1\s\backend\Origam.Server\Session Stores\SaveableSessionStore.cs:line 165
   at Origam.Server.ServerCoreUIService.CreateObject(CreateObjectInput input) in D:\a\1\s\backend\Origam.Server\ServerCoreUIService.cs:line 333
   at Origam.Server.Controller.UIServiceController.<>c__DisplayClass20_0.<CreateObject>b__0() in D:\a\1\s\backend\Origam.Server\Controller\UIServiceController.cs:line 207
   at Origam.Server.Controller.AbstractController.<>c__DisplayClass9_0.<RunWithErrorHandler>g__AsynFunc|0() in D:\a\1\s\backend\Origam.Server\Controller\AbstractController.cs:line 93
   at Origam.Server.Controller.AbstractController.RunWithErrorHandlerAsync(Func`1 func) in D:\a\1\s\backend\Origam.Server\Controller\AbstractController.cs:line 111

Any idea why this happens. The same is happening when placing TagInput into the ScreenPanel.
Realation property IsParentChild can be either true or false, the behaviour does not change.

2

Please check "A child row has multiple parents" error as the root of the problem.

3

I have read through it before but did not realize that I was actually duplicating data in XML DataStructure which is now allowed.

Now everything works fine.

4

This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.