CODEWITHSUNDEEP
clearcase
Itay.B
Itay.B

Reputation: 4111

Clear case exclusive checkout

Is there a way to enable exclusive checkouts on clear case? I want that when I work on a file, no one else will be able to check it out.

TY

Upvotes: 1

Views: 719

Answers (2)

VonC
VonC

Reputation: 1323573

ClearCase support both:

  • "soft" pessimistic lock: checkout reserved
  • optimistic lock: (unreserved checkouts)

The advantage of checkout reserved is that it does not prevent another person to work on the same file, since he/she will have to wait for your checking before having to merge his/her work with your new version.

See about reserved/unreserved checkouts

That said, you could add a post-op trigger (post-checkout) which would check if the file has already a checkedout version and which would undo the checkout and exit with a message preventing the second user to checkout at all the same file.

cleartool mktrtype -element -all -postop checkout \
-execwin "\\path\to\checkIfNotCo.pl" \
-execunix "/path/to/checkIfNotCo.pl" \
-c "check if not CheckedOut" notco_trigger

You could still need to write the checkIfNotCo.pl, but as Paul mentions in his answer, this is not really needed.
If it is a really sensitive file, you could lock it.

Upvotes: 0

Paul R
Paul R

Reputation: 212949

You just check out "reserved". Anyone else who checks out the same file will get an "unreserved" version. You will then be guaranteed the right to check in a version which creates the successor to the current version, whereas anyone else with an "unreserved" checkout will not. This is actually a much better system than exclusive checkouts.

Upvotes: 1

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