A list of global subscript ranges describing the entire key space of a single global.
Objects of this class are the list header with properties for the list metadata. The
ListElements query provides the list elements as rows.
The RangeList is used to store results of the check and also the include/exclude
subscript ranges to check (see ListSet property for more info)
RangeList objects that store results are maintained by the DataCheck destination
system and should not be modified.
To create/edit a global selection RangeList as part of configuring a DataCheck
destination system, the sequence is as follows. Note that the system must be
configured to use global selection RangeLists in order for this to have an effect:
1. To create a new RangeList object, passing the appropriate arguments to the
%New() constructor (see %OnNew()); then call SetCollation().
To edit an existing RangeList object, you can open through the MainIndex
with the MainIndexOpen() method.
2. Call Insert() repeatedly, setting the desired ranges to state
$$$RangeStateExcluded, with the rest being $$$RangeStateIncluded.
3. Call %Save() to save the object.
property ListSet as %String (COLLATION = "EXACT") [ Required ];
The set of RangeLists that this object is a member of.
Integer values 1 and higher are the set of results generated by the DataCheck system
and incremented each time the system starts a new set of results. The currently active
set of results is returned by GetActiveResultsListSet(). A value of "%GS"
($$$RangeListSetGlobalSelection) indicates that this object is a member of the set of
configured subscript ranges to include / exclude from the check.
systemname: name of the DataCheck destination system
set: set that this rangelist is a member of; see ListSet
database: The local database path for non-mirror DataCheck configurations; the mirror
database name, in :mirror:mirrorname:mirrorDBname format, for mirrored
DataCheck configurations.
globalname: name of the global that this rangelist represents (leading ^ is optional)
IMPORTANT: The creator of a global selection RangeList is responsible for ensuring that
the database is specified correctly, and for non-mirror DataCheck configurations, that
it has a mapping specified in the DataCheck configuration.
method DumpArrays()
classmethod GetActiveResultsListSet(systemname As %String) as %String
Given a DataCheck system name, returns the ListSet of the currently active set of results
Given a DataCheck system name and a list set, returns the date and time in $horolog format
when all pending DataCheck queries finished, with the specified list set was the active one.
Returns null if there are queries pending and the specified list set is the active one, or
if the specified list set does not exist. If the specified list set is the active one, the
value may change from non-null back to null if new queries are run.
classmethod GetListSetStartTime(systemname As %String, listset As %String) as %String
Given a DataCheck system name and a list set, returns the date and time in $horolog format
when the check whose results are stored in that list set began. Returns null if the set
does not exist.
Inserts a new range into the range list, merging and splitting with existing
ranges as appropriate. Caller must call %Save() to save.
Input Parameters:
gloref1: beginning of the range to insert (inclusive)
gloref2: end of range to insert (exclusive)
state: state of the range to insert
cachetoken: (optional) A token returned from a previous call to Insert().
See below for more detail.
Output Parameters:
sc: %Status returned from this call. If an error occurs that is not
simply the result of invalid input, the RangeList needs to be reloaded to
return to a valid state; in this case subsequent calls to Insert or attempts
to save the RangeList will result in $$$DCRangeListErrorStatus errors.
Returns: Returns a "cachetoken" that reserves some of the list elements in a
cache to optimize the next insert. Caller must maintain this cachetoken as
described below. If the status in 'sc' is not $$$OK, the cachetoken shall be
null.
The cachetoken returned from a call to Insert() should be passed in to the
next call to Insert() that is to act on a nearby part of the list. Each call
to Insert() that is passed a token will: start a linear scan of the list from
elements referenced in the passed cachetoken (assuming those elements are
still cached and haven't be removed by intervening modifications to the list);
release the cache reservation on the elements that the token references; and
return a new cachetoken with an updated cache reservation. If an Insert()
call is not known to be acting on a region of the list near to a cachetoken
that the caller has from a previous Insert() call, the caller should instead
pass a null cachetoken. When no cachetoken is passed, Insert() will evaluate
all cached elements to determine an optimal starting location.
The caller is responsible for releasing the cache reservation for any
cachetoken returned from Insert() that is not used in a later Insert() call.
The cache reservation should be released by passing the unused cachetoken
to ReleaseCacheToken() or by closing the RangeList object.
Sets the Collation to the value of the 'col' parameter
if specified. If no value is specified, obtains it from the local system by
looking at the global referenced by this RangeList object, if it exists, or
from the default for the database referenced by this RangeList object.
Throws an exception if it was already set to a valid collation.
Caller must call %Save() to save.
The ListElements query fetches as rows each subscript range in the rangelist in collation order.
Each subscript range is the global reference inclusive of the 'From' column up to but excluding
the global reference in the 'To' column. If 'To' is null or "[end]" in display mode, the range
extends to the end of the global.
database: path of the database local to this system
global: name of the global
rl: (optional) If an object is passed in this parameter, it will be assumed to be the
RangeList object for which elements should be returned and the other input parameters
will be ignored. This parameter also serves as an output parameter to return the
RangeList object opened if no object was passed in.
Output Parameters:
rl: (optional) If no object was passed in as an input parameter (see above), then the output
of this parameter is the RangeList object that was opened, or null if no RangeList
object exists (in this case no rows will be found). If an object was passed as an
input parameter, it is not modified.
Indexes
index (IdIndex on SystemName,Counter) [IdKey, Type = key];
Index methods: IdIndexCheck(), IdIndexDelete(), IdIndexExists(), IdIndexOpen(), IdIndexSQLCheckUnique(), IdIndexSQLExists(), IdIndexSQLFindPKeyByConstraint(), IdIndexSQLFindRowIDByConstraint()
index (MainIndex on SystemName,ListSet,Database,GlobalName) [Unique];
