com.yahoo.bard.webservice.data

Class PartialDataHandler

java.lang.Object

com.yahoo.bard.webservice.data.PartialDataHandler

@Singleton
public class PartialDataHandler
extends Object

Partial data handler deals with finding the missing intervals for a given request.

Constructor Summary

Constructors

Constructor and Description
PartialDataHandler()

Method Summary

Modifier and Type	Method and Description
protected static SimplifiedIntervalList	collectBucketedIntervalsNotInIntervalList(SimplifiedIntervalList supplyIntervals, SimplifiedIntervalList bucketedIntervals, Granularity granularity) Collect all subintervals from a bucketed collection that are not subintervals of a supply.
SimplifiedIntervalList	findMissingTimeGrainIntervals(SimplifiedIntervalList availableIntervals, SimplifiedIntervalList requestedIntervals, Granularity granularity) Find the holes in the passed in intervals at a given granularity.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PartialDataHandler

public PartialDataHandler()

Method Detail

findMissingTimeGrainIntervals

public SimplifiedIntervalList findMissingTimeGrainIntervals(@NotNull
                                                            SimplifiedIntervalList availableIntervals,
                                                            @NotNull
                                                            SimplifiedIntervalList requestedIntervals,
                                                            Granularity granularity)

Find the holes in the passed in intervals at a given granularity.

 Requested Interval with grain  |--------|--------|--------|--------|--------|--------|--------|--------|
 Available intervals            |-------------|            |--------------------| |---------------------|
 Missing Intervals:                      |--------|--------|--------|        |--------|
 

Any requested subinterval bucket that is partially unavailable is collected and returned in a simplified form.

Parameters:

availableIntervals - The intervals available in the tables

requestedIntervals - The intervals that may not be fully satisfied

granularity - The granularity at which to find missing intervals

Returns:

bucket-rounded subintervals of the requested intervals which have incomplete data

collectBucketedIntervalsNotInIntervalList

protected static SimplifiedIntervalList collectBucketedIntervalsNotInIntervalList(SimplifiedIntervalList supplyIntervals,
                                                                                  SimplifiedIntervalList bucketedIntervals,
                                                                                  Granularity granularity)

Collect all subintervals from a bucketed collection that are not subintervals of a supply.

The bucketed list of intervals are split by grain before being tested as subintervals of the supply list.

Parameters:

supplyIntervals - The intervals which bucketed intervals are being tested against

bucketedIntervals - The grain bucketed intervals to collect if not in the supply

granularity - The grain at which to split the bucketingIntervals

Returns:

a simplified list of intervals reflecting the intervals in the fromSet which do not appear in the remove set