Package com.yahoo.bard.webservice.web.handlers

Interface Summary

Interface	Description
DataRequestHandler	Data Request Handlers are links in a processing chain for Data requests.
WebServiceHandlerSelector	WebServiceHandlerSelectors are responsible for choosing the right web service with the right broker URL to call.

Class Summary

Class	Description
AsyncWebServiceRequestHandler	Request handler to submit the response to the druid web service.
BaseDataRequestHandler	Base class for request handlers.
CacheRequestHandler	Request handler to check the cache for a matching request and either return the cached result or send the next handler.
CacheV2RequestHandler	Request handler to check the cache for a matching request and either return the cached result or send the next handler.
DateTimeSortRequestHandler	Injects the result set mapper for dateTime based sort request.
DebugRequestHandler	Handler to return debugging of the request query without sending to druid.
DefaultWebServiceHandlerSelector	A no-op web service selector.
DruidPartialDataRequestHandler	A request handler that builds responses for Druid partial data
EtagCacheRequestHandler	Request handler to check the cache for a matching eTag.
PaginationRequestHandler	Injects the result set mapper for data pagination if an API request asks for pagination.
PartialDataRequestHandler	A request handler that builds responses which filter partial data.
RequestContext	A container for state gathered by the web container and used to handle requests.
RequestHandlerUtils	A static utility class for assisting request processing.
SplitQueryRequestHandler	Request handler breaks a query up into smaller time grain queries for parallel processing.
SqlRequestHandler	A handler for queries made against a sql backend.
TopNMapperRequestHandler	Adds the topN result set mapper to allow for top N aggregations based on general group by druid queries.
VolatileDataRequestHandler	A request handler that loads the volatile intervals for a request into the response context.
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.
WebServiceSelectorRequestHandler	The Webservice selector routes requests in one of several ways, described below.
WeightCheckRequestHandler	Weight check request handler determines whether a request should be processed based on estimated query cost.