ClearCase Reference Manual, Release 4.0, Windows

mklbtype

Creates or updates a label type object

APPLICABILITY

ClearCase (cleartool subcommand), Attache (command)

SYNOPSIS

mklbtype [ -rep·lace ] [ -glo·bal [ -acq·uire ] | -ord·inary ] [ -pbr·anch ] [ -sha·red ]: [ -c·omment comment | -cfi·le comment-file-pname |-cq·uery | -cqe·ach | -nc·omment ]
label-type-selector ...

DESCRIPTION

The mklbtype command creates one or more label types with the specified names for future use within a VOB. After creating a label type in a VOB, you can attach labels of that type to versions of that VOB's elements, using mklabel.

Instance Constraints

The same version label can be attached to multiple versions of the same element. (The versions must all be on different branches. If two versions were labeled JOHN_TMP on branch \main\bugfix, the version-extended pathname foo.c@@\main\bugfix\JOHN_TMP would be ambiguous.) However, there are drawbacks to using the same version label several times in the same element:

It is potentially confusing.
In a version-extended pathname, you must always include a full branch pathname along with the version label (for example, foo.c@@\main\new_port\JOHN_TMP).

By default, a new label type is constrained to use on only one version in an element's entire version tree. This allows you to omit the branch pathname portion of a version-extended pathname (for example, foo.c@@\JOHN_TMP). The -pbranch option relaxes this constraint, allowing the label type to be used once per branch.

Recommended Naming Convention

A VOB cannot contain a branch type and a label type with the same name. For this reason, we strongly recommend that you adopt this convention:

Make all letters in names of branch types lowercase (a - z).
Make all letters in names of label types uppercase (A - Z).

PERMISSIONS AND LOCKS

Permissions Checking: For each object processed, you must be one of the following: (with -replace only): type owner, VOB owner, member of the ClearCase group. See the permissions reference page.

Locks: An error occurs if any of the following objects are locked: VOB, label type (with -replace only).

OPTIONS AND ARGUMENTS

HANDLING OF NAME COLLISIONS. Default: An error occurs if a label type named type-name already exists in the VOB.

-rep·lace: Replaces the existing definition of type-name with a new one. If you do not include options from the existing definition, their values will be replaced with the defaults (Exception: the type's global scope does not change; you must explicitly specify -global or -ordinary).

: If you specify a comment when using -replace, the comment appears in the event record for the modification (displayed with lshistory -minor); it does not replace the object's creation comment (displayed with describe). To change an object's creation comment, use chevent.

: Constraints:

You cannot replace either of the predefined label types LATEST and CHECKEDOUT.

If there are existing labels of this type or if the containing VOB is replicated, you cannot replace a less constrained definition (-pbranch specified) with a more constrained definition. (The default is once per element.)

When replacing a label type that was created with the -shared option, you must use -shared again; that is, you cannot convert a label type from shared to unshared.

When converting a global type to ordinary, you must specify the global type as the label-type-selector argument. You cannot specify a local copy of the global type.

SPECIFYING THE SCOPE OF THE LABEL TYPE. Default: Creates an ordinary label type that can be used only in the current VOB.

-glo·bal [ -acq·uire ]: Creates a label type that can be used as a global resource by client VOBs in the administrative VOB hierarchy. With -acquire, mklbtype checks all eclipsing types in client VOBs and converts them to local copies of the new global type.

: For more information, see Administering ClearCase.

-ord·inary: Creates a label type that can be used only in the current VOB.

INSTANCE CONSTRAINTS. Default: A label of the new type can be attached to only one version of a given element.

-pbr·anch: Relaxes the default constraint, allowing the label type to be used once per branch in a given element's version tree. You cannot attach the same version label to multiple versions on the same branch.

MASTERSHIP OF THE LABEL TYPE. Default: Attempts to attach or remove labels of this type succeed only in the VOB replica that is the current master of the label type. The VOB replica in which the new label type is created becomes its initial master.

-sha·red: Allows you to create or delete labels of this type at any replica in the VOB family. If you also specify -pbranch, the replica must master the branch of the version you specify in the mklabel or rmlabel command. If you do not specify -pbranch, the replica must master the element of the version you specify in the mklabel or rmlabel command.

EVENT RECORDS AND COMMENTS. Default: Creates one or more event records, with commenting controlled by your .clearcase_profile file (default: -cqe). See CUSTOMIZING COMMENT HANDLING in the comments reference page. Comments can be edited with chevent.

-c·omment comment | -cfi·le comment-file-pname |-cq·uery | -cqe·ach | -nc·omment: Overrides the default with the option you specify. See the comments reference page.

NAMING THE LABEL TYPES. Default: The label type is created in the VOB that contains the current working directory unless you specify another VOB with the @vob-selector argument.

label-type-selector ...: Names of the label types to be created. Specify label-type-selector in the form [lbtype:]type-name[@vob-selector]

type-name

Name of the label type

See the Object Names section in the cleartool reference page for rules about composing names.

vob-selector

VOB specifierf

Specify vob-selector in the form [vob:]pname-in-vob

pname-in-vob

Pathname of the VOB-tag (whether or not the VOB is mounted) or of any file-system object within the VOB (if the VOB is mounted)

: See the section Recommended Naming Convention.

EXAMPLES

Examples including wildcards or quoting are written for use in cleartool interactive mode. If you use cleartool single-command mode, you may need to change the wildcards and quoting to make your command interpreter process the command appropriately.

In cleartool single-command mode, cmd-context represents the command interpreter prompt. In cleartool interactive mode, cmd-context represents the interactive cleartool prompt. In Attache, cmd-context represents the workspace prompt.

Create a label type that can be used only once per element. Provide a comment on the command line.

cmd-context mklbtype -c "Version label for V2.7.1 sources" V2.7.1

Created label type "V2.7.1".

Create a label type that can be used once per branch in any element's version tree.

cmd-context mklbtype -nc -pbranch REL3

Created label type "REL3".

Change the constraint on an existing label type so that it can be used once per branch. (This change does not affect existing labels of this type.)

cmd-context mklbtype -replace -pbranch -c "allow use on multiple branches" V2.7.1

Replaced definition of label type "V2.7.1".