com.yahoo.bard.webservice.table.availability

Class PartitionAvailability

java.lang.Object

com.yahoo.bard.webservice.table.availability.BaseCompositeAvailability

com.yahoo.bard.webservice.table.availability.PartitionAvailability

All Implemented Interfaces:

Availability

public class PartitionAvailability
extends BaseCompositeAvailability
implements Availability

An implementation of Availability which describes a union of source availabilities, filtered by request parameters, such that all sources which pertain to a query are considered when calculating availability. The supplied availabilityFilters also allows the query to be optimized such that only relevant availabilities are used to determine the availability for a given PhysicalDataSourceConstraint.

The typical use is that the schemas of all sources will be the same, and if they are not, the non merging fields will be added and filled with null values.

For example, with two source availabilities such that:

 
 +------------------+---------------+
 |  part 1          |  part 2       |
 +------------------+---------------+
 |  [2017/2017-02]  |  [2017/2018]  |
 +------------------+---------------+

 If the constraint participates in both parts:

 +---------------------+
 |  availability(1,2)  |
 +---------------------+
 |  [2017/2017-02]     |
 +---------------------+

 If the constraint participates only in the larger partition:

 +-------------------+
 |  availability(2)  |
 +-------------------+
 | [2017/2018]       |
 +-------------------+
 
 

Constructor Summary

Constructors

Constructor and Description
PartitionAvailability(Map<Availability,DataSourceFilter> availabilityFilters) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object obj)
SimplifiedIntervalList	getAvailableIntervals(PhysicalDataSourceConstraint constraint) Fetch a SimplifiedIntervalList representing the coalesced available intervals on this availability as filtered by the PhysicalDataSourceConstraint.
Set<DataSourceName>	getDataSourceNames(PhysicalDataSourceConstraint constraint) The names of the data sources backing this availability as filtered by the constraint.
int	hashCode()
String	toString()

Methods inherited from class com.yahoo.bard.webservice.table.availability.BaseCompositeAvailability

getAllAvailableIntervals, getAllSourceAvailabilities, getDataSourceNames

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.yahoo.bard.webservice.table.availability.Availability

getAllAvailableIntervals, getAvailableIntervals, getAvailableIntervals, getDataSourceNames, getDataSourceNames

Constructor Detail

PartitionAvailability

public PartitionAvailability(@NotNull
                             Map<Availability,DataSourceFilter> availabilityFilters)

Constructor.

Parameters:

availabilityFilters - A map of availabilities to filter functions that determine which requests they participate in

Method Detail

getAvailableIntervals

public SimplifiedIntervalList getAvailableIntervals(PhysicalDataSourceConstraint constraint)

Description copied from interface: Availability

Fetch a SimplifiedIntervalList representing the coalesced available intervals on this availability as filtered by the PhysicalDataSourceConstraint.

Specified by:

getAvailableIntervals in interface Availability

Parameters:

constraint - PhysicalDataSourceConstraint containing Schema and ApiFilters

Returns:

A SimplifiedIntervalList of intervals available

getDataSourceNames

public Set<DataSourceName> getDataSourceNames(PhysicalDataSourceConstraint constraint)

Description copied from interface: Availability

The names of the data sources backing this availability as filtered by the constraint.

Specified by:

getDataSourceNames in interface Availability

Parameters:

constraint - The constraint to filter data source names.

Returns:

A set of names for data sources backing this availability

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object