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CM > Checkout (Apex/ClearCase)

For one or more elements, checks out a branch (typically, the most recent version on a branch). In most cases, this creates a writable copy of that version in the current view (the checked-out version). A checkout record is created. If a view-private object already exists with the same name as an element being checked out, checkout saves the private object as pname.keep (or possibly, pname.keep.n),

Files and directories under Apex/ClearCase control must be checked out to be modified. A checked-out element has read-write UNIX permissions. Elements can be checked out with reserved or unreserved.

Reserved and Unreserved Checkouts

A version can have at most one reserved check out and any number of unreserved check outs. Performing a reserved check out guarantees you the right to create a successor to the version you checked out. If several users perform unreserved checkouts, any one of them (and just one) can create a successor version.

The predecessor version of your checked-out file may not be the latest on the branch from which you checked out your version; this situation can occur if unreserved checkouts are used. In this case, you must merge from the latest version on the branch to your checked out version before you can check in your version.

The CM > Checkout command creates a modifiable copy or a version. When you choose this command, the Checkout dialog box appears.

ClearCase Checkout Dialog Box Fields:

Objects To Checkout list field

The list field displays the names of objects to be checked out.

Use the Add input field to add file names to the list field. Use the Remove or Clear buttons to delete entries from the list.

Comment options radio buttons:

Type radio buttons:

Suppress warning messages check box:

The default is to display all warning messages.

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