com.yahoo.bard.webservice.web.handlers

Class PartialDataRequestHandler

java.lang.Object

com.yahoo.bard.webservice.web.handlers.PartialDataRequestHandler

All Implemented Interfaces:

DataRequestHandler

public class PartialDataRequestHandler
extends Object
implements DataRequestHandler

A request handler that builds responses which filter partial data.

Partial data request handler puts a list of all missing intervals for a group by into the context and injects a mapper into the response processor

Field Summary

Fields

Modifier and Type	Field and Description
protected DataRequestHandler	next
static String	PARTIAL_DATA_HEADER
protected PartialDataHandler	partialDataHandler

Constructor Summary

Constructors

Constructor and Description
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(DataRequestHandler, PartialDataHandler)

Method Summary

Modifier and Type	Method and Description
static SimplifiedIntervalList	getPartialIntervalsWithDefault(Map<String,Serializable> context) Return the missing intervals from the context.
boolean	handleRequest(RequestContext context, DataApiRequest request, DruidAggregationQuery<?> druidQuery, ResponseProcessor response) Handle the response, passing the request down the chain as necessary.

Methods inherited from class java.lang.Object

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

Field Detail

PARTIAL_DATA_HEADER

public static final String PARTIAL_DATA_HEADER

See Also:

Constant Field Values

next

@NotNull
protected final DataRequestHandler next

partialDataHandler

@NotNull
protected final PartialDataHandler partialDataHandler

Constructor Detail

PartialDataRequestHandler

@Deprecated
public PartialDataRequestHandler(DataRequestHandler next,
                                             PhysicalTableDictionary physicalTableDictionary,
                                             PartialDataHandler partialDataHandler)

Deprecated. use constructor PartialDataRequestHandler(DataRequestHandler, PartialDataHandler)

Wrap the response processor in a partial data check.

Parameters:

next - The next request handler to invoke

physicalTableDictionary - the repository of slice data

partialDataHandler - the service to calculate partial data from table availabilities

PartialDataRequestHandler

public PartialDataRequestHandler(DataRequestHandler next,
                                 PartialDataHandler partialDataHandler)

Wrap the response processor in a partial data check.

Parameters:

next - The next request handler to invoke

partialDataHandler - the service to calculate partial data from table availabilities

Method Detail

handleRequest

public boolean handleRequest(RequestContext context,
                             DataApiRequest request,
                             DruidAggregationQuery<?> druidQuery,
                             ResponseProcessor response)

Description copied from interface: DataRequestHandler

Handle the response, passing the request down the chain as necessary.

Specified by:

handleRequest in interface DataRequestHandler

Parameters:

context - The context for the Request

request - The Api Request Object

druidQuery - The druid query

response - The Async response

Returns:

True if the async response has been processed or passed to a future for processing

getPartialIntervalsWithDefault

public static SimplifiedIntervalList getPartialIntervalsWithDefault(Map<String,Serializable> context)

Return the missing intervals from the context.

WARNING: A serialization issue may result in the context value being a list but not a Simplified Interval List. See https://github.com/yahoo/fili/issues/657

Parameters:

context - The map containing the missing intervals if any

Returns:

the missing intervals from the request or an empty list