Package org.apache.solr.handler.component

Class RealTimeGetComponent

java.lang.Object

org.apache.solr.handler.component.SearchComponent

org.apache.solr.handler.component.RealTimeGetComponent

All Implemented Interfaces:

AutoCloseable, SolrInfoBean, SolrMetricProducer, NamedListInitializedPlugin

public class RealTimeGetComponent
extends SearchComponent

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RealTimeGetComponent.Resolution	Lookup strategy for some methods on this class.

Nested classes/interfaces inherited from interface org.apache.solr.core.SolrInfoBean

SolrInfoBean.Category, SolrInfoBean.Group

Field Summary

Fields

Modifier and Type	Field	Description
static String	COMPONENT_NAME
static org.apache.solr.common.SolrInputDocument	DELETED

Fields inherited from class org.apache.solr.handler.component.SearchComponent

solrMetricsContext, standard_components

Constructor Summary

Constructors

Constructor	Description
RealTimeGetComponent()

Method Summary

Modifier and Type	Method	Description
int	createSubRequests(ResponseBuilder rb)
int	distributedProcess(ResponseBuilder rb)	Process for a distributed search.
void	finishStage(ResponseBuilder rb)	Called after all responses have been received for this stage.
SolrInfoBean.Category	getCategory()	Category of this component
String	getDescription()	Simple one or two line description
static org.apache.solr.common.SolrInputDocument	getInputDocument(SolrCore core, org.apache.lucene.util.BytesRef idBytes, org.apache.lucene.util.BytesRef rootIdBytes, AtomicLong versionReturned, Set<String> onlyTheseFields, RealTimeGetComponent.Resolution resolveStrategy)	Obtains the latest document for a given id from the tlog or through the realtime searcher (if not found in the tlog).
static org.apache.solr.common.SolrInputDocument	getInputDocumentFromTlog(SolrCore core, org.apache.lucene.util.BytesRef idBytes, AtomicLong versionReturned, Set<String> onlyTheseFields, RealTimeGetComponent.Resolution resolution)	returns the SolrInputDocument from the current tlog, or DELETED if it has been deleted, or null if there is no record of it in the current update log.
void	prepare(ResponseBuilder rb)	Prepare the response.
void	process(ResponseBuilder rb)	Process the request for this component
void	processGetFingeprint(ResponseBuilder rb)
void	processGetUpdates(ResponseBuilder rb)
void	processGetVersions(ResponseBuilder rb)
void	processSync(ResponseBuilder rb, int nVersions, String sync)
void	processSyncWithLeader(ResponseBuilder rb, int nVersions, String syncWithLeader, List<Long> versions)
static org.apache.solr.common.SolrDocument	toSolrDoc(org.apache.solr.common.SolrInputDocument sdoc, IndexSchema schema)	Converts a SolrInputDocument to SolrDocument, using an IndexSchema instance.
static org.apache.solr.common.SolrDocument	toSolrDoc(org.apache.solr.common.SolrInputDocument sdoc, IndexSchema schema, boolean forInPlaceUpdate)	Converts a SolrInputDocument to SolrDocument, using an IndexSchema instance.

Methods inherited from class org.apache.solr.handler.component.SearchComponent

getName, getSolrMetricsContext, handleResponses, initializeMetrics, modifyRequest, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.solr.util.plugin.NamedListInitializedPlugin

init

Methods inherited from interface org.apache.solr.metrics.SolrMetricProducer

close

Field Detail

COMPONENT_NAME

public static final String COMPONENT_NAME

See Also:

Constant Field Values

DELETED

public static org.apache.solr.common.SolrInputDocument DELETED

Constructor Detail

RealTimeGetComponent

public RealTimeGetComponent()

Method Detail

prepare

public void prepare(ResponseBuilder rb)
             throws IOException

Description copied from class: SearchComponent

Prepare the response. Guaranteed to be called before any SearchComponent SearchComponent.process(org.apache.solr.handler.component.ResponseBuilder) method. Called for every incoming request.

The place to do initialization that is request dependent.

Specified by:

prepare in class SearchComponent

Parameters:

rb - The ResponseBuilder

Throws:

IOException - If there is a low-level I/O error.

process

public void process(ResponseBuilder rb)
             throws IOException

Description copied from class: SearchComponent

Process the request for this component

Specified by:

process in class SearchComponent

Parameters:

rb - The ResponseBuilder

Throws:

IOException - If there is a low-level I/O error.

getInputDocumentFromTlog

public static org.apache.solr.common.SolrInputDocument getInputDocumentFromTlog(SolrCore core,
                                                                                org.apache.lucene.util.BytesRef idBytes,
                                                                                AtomicLong versionReturned,
                                                                                Set<String> onlyTheseFields,
                                                                                RealTimeGetComponent.Resolution resolution)

returns the SolrInputDocument from the current tlog, or DELETED if it has been deleted, or null if there is no record of it in the current update log. If null is returned, it could still be in the latest index. Copy-field target fields are excluded.

Parameters:

idBytes - doc ID to find; never a child doc.

versionReturned - If a non-null AtomicLong is passed in, it is set to the version of the update returned from the TLog.

getInputDocument

public static org.apache.solr.common.SolrInputDocument getInputDocument(SolrCore core,
                                                                        org.apache.lucene.util.BytesRef idBytes,
                                                                        org.apache.lucene.util.BytesRef rootIdBytes,
                                                                        AtomicLong versionReturned,
                                                                        Set<String> onlyTheseFields,
                                                                        RealTimeGetComponent.Resolution resolveStrategy)
                                                                 throws IOException

Obtains the latest document for a given id from the tlog or through the realtime searcher (if not found in the tlog). Fields that are targets of copy-fields are excluded.

Parameters:

idBytes - ID of the document to be fetched.

rootIdBytes - the root ID of the document being looked up. If there are no child docs, this is always the same as idBytes.

versionReturned - If a non-null AtomicLong is passed in, it is set to the version of the update returned from the TLog.

onlyTheseFields - If not-null, this limits the fields that are returned. However it is only an optimization hint since other fields may be returned. Copy field targets are never returned.

resolveStrategy - RealTimeGetComponent.Resolution.DOC or RealTimeGetComponent.Resolution.ROOT_WITH_CHILDREN.

Throws:

IOException

See Also:

RealTimeGetComponent.Resolution

toSolrDoc

public static org.apache.solr.common.SolrDocument toSolrDoc(org.apache.solr.common.SolrInputDocument sdoc,
                                                            IndexSchema schema)

Converts a SolrInputDocument to SolrDocument, using an IndexSchema instance.

WARNING: This API is experimental and might change in incompatible ways in the next release.

toSolrDoc

public static org.apache.solr.common.SolrDocument toSolrDoc(org.apache.solr.common.SolrInputDocument sdoc,
                                                            IndexSchema schema,
                                                            boolean forInPlaceUpdate)

Converts a SolrInputDocument to SolrDocument, using an IndexSchema instance.

Parameters:

sdoc - The input document.

schema - The index schema.

forInPlaceUpdate - Whether the document is being used for an in place update, see DocumentBuilder.toDocument(SolrInputDocument, IndexSchema, boolean, boolean)

distributedProcess

public int distributedProcess(ResponseBuilder rb)
                       throws IOException

Description copied from class: SearchComponent

Process for a distributed search.

Overrides:

distributedProcess in class SearchComponent

Returns:

the next stage for this component

Throws:

IOException

createSubRequests

public int createSubRequests(ResponseBuilder rb)
                      throws IOException

Throws:

IOException

finishStage

public void finishStage(ResponseBuilder rb)

Description copied from class: SearchComponent

Called after all responses have been received for this stage. Useful when different requests are sent to each shard.

Overrides:

finishStage in class SearchComponent

getDescription

public String getDescription()

Description copied from interface: SolrInfoBean

Simple one or two line description

Specified by:

getDescription in interface SolrInfoBean

Specified by:

getDescription in class SearchComponent

getCategory

public SolrInfoBean.Category getCategory()

Description copied from interface: SolrInfoBean

Category of this component

Specified by:

getCategory in interface SolrInfoBean

Overrides:

getCategory in class SearchComponent

processGetFingeprint

public void processGetFingeprint(ResponseBuilder rb)
                          throws IOException

Throws:

IOException

processGetVersions

public void processGetVersions(ResponseBuilder rb)
                        throws IOException

Throws:

IOException

processSyncWithLeader

public void processSyncWithLeader(ResponseBuilder rb,
                                  int nVersions,
                                  String syncWithLeader,
                                  List<Long> versions)

processSync

public void processSync(ResponseBuilder rb,
                        int nVersions,
                        String sync)

processGetUpdates

public void processGetUpdates(ResponseBuilder rb)
                       throws IOException

Throws:

IOException