Package com.yahoo.vespa.streamingvisitors

Class StreamingBackend

java.lang.Object

com.yahoo.prelude.fastsearch.VespaBackend

com.yahoo.vespa.streamingvisitors.StreamingBackend

public class StreamingBackend
extends VespaBackend

The searcher which forwards queries to storage nodes using visiting. The searcher is a visitor client responsible for starting search visitors in storage and collecting and merging the results.

Author:

baldersheim, Ulf Carlin

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	StreamingBackend.FillHitsResult

Nested classes/interfaces inherited from class com.yahoo.prelude.fastsearch.VespaBackend

VespaBackend.DispatchPhase

Field Summary

Fields inherited from class com.yahoo.prelude.fastsearch.VespaBackend

SORTABLE_ATTRIBUTES_SUMMARY_CLASS

Constructor Summary

Constructors

Constructor	Description
StreamingBackend(ClusterParams clusterParams, String searchClusterName, com.yahoo.container.core.documentapi.VespaDocumentAccess access, String storageClusterRouteSpec)

Method Summary

Modifier and Type	Method	Description
protected void	doPartialFill(Result result, String summaryClass)
Result	doSearch2(String schema, Query query)	Searches a search cluster This is an endpoint - searchers will never propagate the search to any nested searcher.
protected StreamingBackend.FillHitsResult	fillHits(Result result, DocsumPacket[] packets, String summaryClass)	Fills the hits.
Pong	ping(Ping ping, Execution execution)

Methods inherited from class com.yahoo.prelude.fastsearch.VespaBackend

ensureLegalSummaryClass, fill, getDefaultDocsumClass, getDocumentDatabase, getName, getServerId, iterableHits, search, shutDown, summaryNeedsQuery, transformQuery

Methods inherited from class java.lang.Object

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

Constructor Details

StreamingBackend

public StreamingBackend(ClusterParams clusterParams,
 String searchClusterName,
 com.yahoo.container.core.documentapi.VespaDocumentAccess access,
 String storageClusterRouteSpec)

Method Details

doPartialFill

protected void doPartialFill(Result result,
 String summaryClass)

Specified by:

doPartialFill in class VespaBackend

doSearch2

public Result doSearch2(String schema,
 Query query)

Description copied from class: VespaBackend

Searches a search cluster This is an endpoint - searchers will never propagate the search to any nested searcher.

Specified by:

doSearch2 in class VespaBackend

query - the query to search

ping

public Pong ping(Ping ping,
 Execution execution)

fillHits

protected StreamingBackend.FillHitsResult fillHits(Result result,
 DocsumPacket[] packets,
 String summaryClass)

Fills the hits.

Returns:

the number of hits that we did not return data for, and an optional error message. when things are working normally we return 0.