com.yahoo.bard.webservice.table.resolver

Class RequestQueryGranularityResolver

java.lang.Object

com.yahoo.bard.webservice.table.resolver.RequestQueryGranularityResolver

All Implemented Interfaces:

BiFunction<DataApiRequest,TemplateDruidQuery,Granularity>

public class RequestQueryGranularityResolver
extends Object
implements BiFunction<DataApiRequest,TemplateDruidQuery,Granularity>

A function to take an ApiRequest and TemplateDruidQuery and determine a Granularity which must be satisfied by a fact source in order to satisfy this request.

Constructor Summary

Constructors

Constructor and Description
RequestQueryGranularityResolver()

Method Summary

Modifier and Type	Method and Description
Granularity	apply(DataApiRequest request, TemplateDruidQuery templateDruidQuery)
Granularity	resolveAcceptingGrain(DataApiRequest apiRequest, TemplateDruidQuery query) Get the a granularity which must be satisfied by any answering table granularity for this request.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.BiFunction

andThen

Constructor Detail

RequestQueryGranularityResolver

public RequestQueryGranularityResolver()

Method Detail

resolveAcceptingGrain

public Granularity resolveAcceptingGrain(DataApiRequest apiRequest,
                                         TemplateDruidQuery query)

Get the a granularity which must be satisfied by any answering table granularity for this request.

If a query has a time grain constraint, it will be returned as a granularity with the request time zone applied. If the query has no constraint, the request grain will be returned as a granularity.

Parameters:

apiRequest - DataApiRequest from the user which may specify a coarsest satisfying grain

query - Query which may apply a coarsest satisfying grain

Returns:

The coarsest valid table grain to satisfy the query

apply

public Granularity apply(DataApiRequest request,
                         TemplateDruidQuery templateDruidQuery)

Specified by:

apply in interface BiFunction<DataApiRequest,TemplateDruidQuery,Granularity>