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Report From: Delphi-BCB/Midas/TClientDataSet [ Add a report in this area ]

Report #: 5646

Status: Closed

Nested TClientDataSet deletion fails if child has CloneCursor has been invoked

Project: Delphi

Build #: 4.453

Version: 7.0

Submitted By: Brian Moelk

Report Type: Basic functionality failure

Date Reported: 8/15/2003 9:37:45 AM

Severity: Infrequently encountered problem

Last Updated: 6/27/2006 12:28:14 PM

Platform: 95, 98, 2000, NT, XP

Internal Tracking #: 195888

Resolution: Fixed (Resolution Comments)

Resolved in Build: : 7.0.8.1

Duplicate of: None

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Total Votes: None

Description

Error message: 'cannot delete master record with details' received in spite of deleting child records within the BeforeDelete event of the parent.

Steps to Reproduce:

1. Download and unzip the test case app from Attachments.
2. Open the test case app in D7 and click Run.
3. Follow the on screen steps.

Workarounds

call MergeChangeLog on the Child TClientDataSet after you have deleted all its rows.

---------

call MergeChangeLog on the Child TClientDataSet after you have deleted all its rows.

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call MergeChangeLog on the Child TClientDataSet after you have deleted all its rows.

Attachment

5646.zip

Comments

Dave Rowntree at 8/18/2003 2:44:33 AM -

Please would yo provide a zipped up compilable test case app in Attachments, And in Steps, describe how to use the app to demonstrate the problem.

Thank you.

Dave Rowntree at 2/11/2004 8:21:19 AM -

Never mind, I did it myself.

This was your original Steps content:
"
Will provide steps if necessary.

This appears to be the same bug as discussed here:

http://groups.google.com/groups?q=delphi+nested+%22cannot+delete+master+record+with+details%22+clonecursor&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3c5fee22_2%40dnews&rnum=1

http://tinyurl.com/k4tf
"

Dave Rowntree at 5/11/2004 3:35:13 AM -

Fixed in Midas.dll

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