Uses of Interface
com.yahoo.bard.webservice.web.handlers.DataRequestHandler

Packages that use DataRequestHandler

Package	Description
com.yahoo.bard.webservice.web.endpoints
com.yahoo.bard.webservice.web.handlers
com.yahoo.bard.webservice.web.handlers.workflow

Uses of DataRequestHandler in com.yahoo.bard.webservice.web.endpoints

Methods in com.yahoo.bard.webservice.web.endpoints that return DataRequestHandler

Modifier and Type	Method and Description
DataRequestHandler	DataServlet.getDataRequestHandler()

Uses of DataRequestHandler in com.yahoo.bard.webservice.web.handlers

Classes in com.yahoo.bard.webservice.web.handlers that implement DataRequestHandler

Modifier and Type	Class and Description
class	AsyncWebServiceRequestHandler Request handler to submit the response to the druid web service.
class	BaseDataRequestHandler Base class for request handlers.
class	CacheRequestHandler Request handler to check the cache for a matching request and either return the cached result or send the next handler.
class	CacheV2RequestHandler Request handler to check the cache for a matching request and either return the cached result or send the next handler.
class	DateTimeSortRequestHandler Injects the result set mapper for dateTime based sort request.
class	DebugRequestHandler Handler to return debugging of the request query without sending to druid.
class	DruidPartialDataRequestHandler A request handler that builds responses for Druid partial data
class	EtagCacheRequestHandler Request handler to check the cache for a matching eTag.
class	PaginationRequestHandler Injects the result set mapper for data pagination if an API request asks for pagination.
class	PartialDataRequestHandler A request handler that builds responses which filter partial data.
class	SplitQueryRequestHandler Request handler breaks a query up into smaller time grain queries for parallel processing.
class	SqlRequestHandler A handler for queries made against a sql backend.
class	TopNMapperRequestHandler Adds the topN result set mapper to allow for top N aggregations based on general group by druid queries.
class	VolatileDataRequestHandler A request handler that loads the volatile intervals for a request into the response context.
class	WebServiceHandler WebServiceHandler carries the web service through the chain of request handlers so we know who to send the request to when the request handlers finish.
class	WebServiceSelectorRequestHandler The Webservice selector routes requests in one of several ways, described below.
class	WeightCheckRequestHandler Weight check request handler determines whether a request should be processed based on estimated query cost.

Fields in com.yahoo.bard.webservice.web.handlers declared as DataRequestHandler

Modifier and Type	Field and Description
protected DataRequestHandler	WeightCheckRequestHandler.next
protected DataRequestHandler	SplitQueryRequestHandler.next
protected DataRequestHandler	EtagCacheRequestHandler.next
protected DataRequestHandler	VolatileDataRequestHandler.next
protected DataRequestHandler	CacheV2RequestHandler.next
protected DataRequestHandler	CacheRequestHandler.next
protected DataRequestHandler	PartialDataRequestHandler.next
protected DataRequestHandler	DebugRequestHandler.next

Constructors in com.yahoo.bard.webservice.web.handlers with parameters of type DataRequestHandler

Constructor and Description
CacheRequestHandler(DataRequestHandler next, DataCache<?> dataCache, com.fasterxml.jackson.databind.ObjectMapper mapper) Build a Cache request handler.
CacheV2RequestHandler(DataRequestHandler next, DataCache<?> dataCache, QuerySigningService<?> querySigningService, com.fasterxml.jackson.databind.ObjectMapper mapper) Build a Cache request handler.
DateTimeSortRequestHandler(DataRequestHandler next) Constructor.
DebugRequestHandler(DataRequestHandler next, com.fasterxml.jackson.databind.ObjectMapper mapper) Build a debugging handler.
DefaultWebServiceHandlerSelector(DruidWebService webService, DataRequestHandler webServiceNext) Constructor.
DruidPartialDataRequestHandler(DataRequestHandler next) Constructor.
EtagCacheRequestHandler(DataRequestHandler next, TupleDataCache<String,String,String> dataCache, com.fasterxml.jackson.databind.ObjectMapper mapper) Build a Cache request handler.
PaginationRequestHandler(DataRequestHandler next) Constructor.
PartialDataRequestHandler(DataRequestHandler next, PartialDataHandler partialDataHandler) Wrap the response processor in a partial data check.
PartialDataRequestHandler(DataRequestHandler next, PhysicalTableDictionary physicalTableDictionary, PartialDataHandler partialDataHandler) Deprecated. use constructor PartialDataRequestHandler.PartialDataRequestHandler(DataRequestHandler, PartialDataHandler)
SplitQueryRequestHandler(DataRequestHandler next) Build a Split Query Request Handler.
SqlRequestHandler(DataRequestHandler next, com.fasterxml.jackson.databind.ObjectMapper mapper) Constructor.
TopNMapperRequestHandler(DataRequestHandler next) Build a topN request handler.
VolatileDataRequestHandler(DataRequestHandler next, PhysicalTableDictionary physicalTableDictionary, VolatileIntervalsService volatileIntervalsService) Detect volatile intervals and attach metadata describing the intervals to the request.
WebServiceHandler(DruidWebService webService, DataRequestHandler next) Constructor.
WebServiceSelectorRequestHandler(DruidWebService webService, DataRequestHandler webserviceNext, com.fasterxml.jackson.databind.ObjectMapper mapper) Constructor.
WeightCheckRequestHandler(DataRequestHandler next, DruidWebService webService, QueryWeightUtil queryWeightUtil, com.fasterxml.jackson.databind.ObjectMapper mapper) Build a weight checking request handler.

Uses of DataRequestHandler in com.yahoo.bard.webservice.web.handlers.workflow

Methods in com.yahoo.bard.webservice.web.handlers.workflow that return DataRequestHandler

Modifier and Type	Method and Description
DataRequestHandler	SqlWorkflow.buildWorkflow()
DataRequestHandler	DruidWorkflow.buildWorkflow()
DataRequestHandler	RequestWorkflowProvider.buildWorkflow() Construct a workflow instance with a starting point request handler.