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Skimming creates rules for a major or minor RuleSet version
by copying selected rules of lower numbered versions of the
same RuleSet on the same Process Commander system.
Skimming collects the highest version of every rule in the
RuleSet (except as noted below) and copies them to a new major
or minor version of that RuleSet on the same system, with patch
version 01. For example, you can skim rules from RuleSet
versions 06-01-01 through 06-13-17 to 07-01-01.
Preparations
Before performing the operation, complete these steps:
- Select View > Rules > All Checkouts.
The report lists all rules checked out. Confirm that none
of the rules to be skimmed are checked out.
- If desired, secure each version below the new version,
so the rules associated with that version cannot later be
modified or deleted.
- Select Tools > Rule Management > Skim a
RuleSet to begin the skim operation.
- After the operation completes, update application
rules, the Requires RuleSets and Versions
prerequisites array in RuleSet version rules, and access
groups to reference the new major version.
- Log off and log in to access the new version.
Completing the form
To skim to a new version:
- Select a radio button to indicate whether the newly
created version is to be a major version (NN-01-01) or a
minor version (NN-MM-01).
- Select a RuleSet to be skimmed in the
RuleSet field. You can skim only RuleSets
appearing on your RuleSet list.
- Select an existing major version in the From
Major Version field.
- Select a version in the Starting
Version and Ending Version
fields.
- Enter the version number to be created, consistent with
the radio button you selected in Step 1.
- Click Skim to
begin processing. This may take several minutes.
- The system creates a new RuleSet version and begins
copying rules. A status area shows progress and the results
of the skim.
- If errors occur, click the Total Number of
Errors link in the lower right corner of the
display form to see any error messages. This list can't
easily be accessed after you close the form; print the list
so you can research and address the errors.
- Click Close
to exit.
A "No records found" message indicates that the
rules associated with the RuleSet have no version and so were
not altered.
Follow-up tasks
After the skim operation completes, these steps may be
useful:
- Research and resolve errors reported by the skim
operation.
- Update access groups or application rules to make the
new major version available to appropriate users.
- To ensure that all users access only the new major
version, delete rules in the lower major version
See below: Class rules
do not have a version. Do not delete Class rules (or other
rules that have no version). In some organizations, policies
may prohibit deleting old rules, even if they are not in use.
Optionally, delete rules after
skimming
Skimming does not delete any rules; the rules it copies to
make the new version remain unaltered.
When the skim operation
completes, update each existing RuleSet Version that was
skimmed to secure it by checking the Lock this
Version? field on the Security
tab. This ensures that from then on, developers can add or
update rules only in the newly created version.
In addition to locking the RuleSet versions, in some
organizations, administrators prefer to delete the
rules in lower versions after the versions are skimmed.
Deleting no-longer-used rules can benefit performance,
because rule resolution has fewer rules to search
through.
Of course, do not delete
any class rules or library rules; rules of these two types
(and others listed below) don't belong to a version and
are needed while any version is in use. Use the Export
Archive tool to back up a RuleSet version before deleting
it.
In some organizations, compliance and audit requirements
prohibit deleting rules, even those no longer in use.
Notes
1. The skim operation does not copy blocked rules into the
new RuleSet version.
2. Rules in major versions below the major version you
enter are not copied. For example, if you skim 02-ZZ-ZZ into
03-01-01, any rules in version 01-ZZ-ZZ are ignored.
3. Rules of these types do not have versions and therefore
are unaffected by skim processing:
- Application
- Class
- RuleSet
- RuleSet Version
- Access of Role to Object
- Access Deny
- Library
4. Skimming does not delete any rules. Skimming copies but
does not update or delete rules in the source versions.
5. Skimming does not validate the copied rules, nor
compile any Java. For rules of rule types that produce
compiled Java, compilation occurs when the rule is first
assembled and executed.
6. The Skim option is available only to users who have
access to the zipMoveSkim privilege. The
standard access role PegaRULES:SysAdm4 provides
this privilege.
7. The update history of the new, skimmed rule contains
only one instance, reflecting the date and time it was
created through the skim operation. The history of the source
rule remains available and unchanged.
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