Uses of Class
com.yahoo.search.Searcher

Packages that use Searcher

Package	Description
com.yahoo.search.cluster	Standard searchers to compose in source search chains (those containing searchers specific for one source and which ends with a call to some provider) which calls a cluster of provider nodes.
com.yahoo.search.federation	The federation layer on top of the search container.
com.yahoo.search.federation.selection
com.yahoo.search.grouping
com.yahoo.search.handler	The search handler, which handles search request to the Container by translating the Request into a Query, invoking the chosen Search Chain to get a Result, which it translates to a Response which is returned to the Container.
com.yahoo.search.pagetemplates
com.yahoo.search.query.rewrite
com.yahoo.search.query.rewrite.rewriters
com.yahoo.search.result	The content of a Result produced in response to a Query.
com.yahoo.search.searchchain	Classes for composition of searchers into search chains, which are executed to produce Results for Queries.
com.yahoo.search.searchers	Various useful searchers
com.yahoo.search.statistics

Uses of Searcher in com.yahoo.search.cluster

Subclasses of Searcher in com.yahoo.search.cluster

Modifier and Type	Class	Description
class	ClusterSearcher<T>	Implements clustering (failover and load balancing) over a set of client connections to a homogenuos cluster of nodes.
class	PingableSearcher	A searcher to which we can send a ping to probe if it is alive

Uses of Searcher in com.yahoo.search.federation

Subclasses of Searcher in com.yahoo.search.federation

Modifier and Type	Class	Description
class	FederationSearcher	This searcher takes a set of sources, looks them up in config and fire off the correct searchchains.
class	ForwardingSearcher	A lightweight searcher to forward all incoming requests to a single search chain defined in config.

Uses of Searcher in com.yahoo.search.federation.selection

Methods in com.yahoo.search.federation.selection that return types with arguments of type Searcher

Modifier and Type	Method	Description
com.yahoo.component.chain.Chain<Searcher>	FederationTarget.getChain()

Method parameters in com.yahoo.search.federation.selection with type arguments of type Searcher

Modifier and Type	Method	Description
java.util.Collection<FederationTarget<T>>	TargetSelector.getTargets(Query query, com.yahoo.processing.execution.chain.ChainRegistry<Searcher> searcherChainRegistry)

Constructor parameters in com.yahoo.search.federation.selection with type arguments of type Searcher

Constructor	Description
FederationTarget(com.yahoo.component.chain.Chain<Searcher> chain, com.yahoo.search.searchchain.model.federation.FederationOptions federationOptions, T customData)

Uses of Searcher in com.yahoo.search.grouping

Subclasses of Searcher in com.yahoo.search.grouping

Modifier and Type	Class	Description
class	GroupingQueryParser	This searcher is responsible for turning the "select" parameter into a corresponding GroupingRequest.
class	GroupingValidator	This searcher ensure that all GroupingRequest objects attached to a Query makes sense to the search cluster for which this searcher has been deployed.
class	UniqueGroupingSearcher	Implements 'unique' using a grouping expression.

Uses of Searcher in com.yahoo.search.handler

Method parameters in com.yahoo.search.handler with type arguments of type Searcher

Modifier and Type	Method	Description
Result	SearchHandler.searchAndFill(Query query, com.yahoo.component.chain.Chain<? extends Searcher> searchChain)	Used from container SDK, for internal use only

Uses of Searcher in com.yahoo.search.pagetemplates

Subclasses of Searcher in com.yahoo.search.pagetemplates

Modifier and Type	Class	Description
class	PageTemplateSearcher	Enables page optimization templates.

Uses of Searcher in com.yahoo.search.query.rewrite

Subclasses of Searcher in com.yahoo.search.query.rewrite

Modifier and Type	Class	Description
class	QueryRewriteSearcher	A template class for all rewriters
class	SearchChainDispatcherSearcher	Execute rewriter search chain specified by the user.

Uses of Searcher in com.yahoo.search.query.rewrite.rewriters

Subclasses of Searcher in com.yahoo.search.query.rewrite.rewriters

Modifier and Type	Class	Description
class	GenericExpansionRewriter	This rewriter would add rewrites to entities (e.g abbreviation, synonym, etc) to boost precision - FSA dict: [normalized original query]\t[rewrite 1]\t[rewrite 2]\t[etc] - Features: RewritesAsUnitEquiv flag: add proximity boosted rewrites PartialPhraseMatch flag: whether to match whole phrase or partial phrase MaxRewrites flag: the maximum number of rewrites to be added
class	MisspellRewriter	This rewriter would retrieve spell corrected query from QLAS and add it to the original query tree as equiv - Features: RewritesAsEquiv flag: add rewrites to original query as equiv
class	NameRewriter	This rewriter would add rewrites to name entities to boost precision - FSA dict: [normalized original query]\t[rewrite 1]\t[rewrite 2]\t[etc] - Features: OriginalAsUnit flag: add proximity boosting to original query RewritesAsUnitEquiv flag: add proximity boosted rewrites to original query RewritesAsEquiv flag: add rewrites to original query

Uses of Searcher in com.yahoo.search.result

Methods in com.yahoo.search.result with parameters of type Searcher

Modifier and Type	Method	Description
java.lang.Object	Hit.getSearcherSpecificMetaData(Searcher searcher)	Returns data attached to this hit for this searcher, or null if none
void	Hit.setSearcherSpecificMetaData(Searcher searcher, java.lang.Object data)	Attach some data to this hit for this searcher

Uses of Searcher in com.yahoo.search.searchchain

Subclasses of Searcher in com.yahoo.search.searchchain

Modifier and Type	Class	Description
class	ForkingSearcher	Searchers which invokes other search chains should override this.

Fields in com.yahoo.search.searchchain with type parameters of type Searcher

Modifier and Type	Field	Description
com.yahoo.component.chain.Chain<Searcher>	ForkingSearcher.CommentedSearchChain.searchChain

Methods in com.yahoo.search.searchchain that return types with arguments of type Searcher

Modifier and Type	Method	Description
com.yahoo.component.chain.Chain<Searcher>	SearchChainRegistry.getChain(com.yahoo.component.ComponentId id)
com.yahoo.component.chain.Chain<Searcher>	SearchChainRegistry.getChain(java.lang.String componentSpecification)
java.util.List<Searcher>	SearchChain.searchers()	Returns an unmodifiable list of the searchers this search chain executs, in resolved execution order.
com.yahoo.component.chain.Chain<Searcher>	SearchChainRegistry.unregister(com.yahoo.component.chain.Chain<Searcher> component)

Methods in com.yahoo.search.searchchain with parameters of type Searcher

Modifier and Type	Method	Description
void	SearcherRegistry.register(Searcher searcher)

Method parameters in com.yahoo.search.searchchain with type arguments of type Searcher

Modifier and Type	Method	Description
Execution	ExecutionFactory.newExecution(com.yahoo.component.chain.Chain<? extends Searcher> searchChain)	Creates a new execution starting at a search chain.
void	SearchChainRegistry.register(com.yahoo.component.chain.Chain<Searcher> component)
com.yahoo.component.chain.Chain<Searcher>	SearchChainRegistry.unregister(com.yahoo.component.chain.Chain<Searcher> component)

Constructors in com.yahoo.search.searchchain with parameters of type Searcher

Constructor	Description
Execution(Searcher searcher, Execution.Context context)	Creates an execution from a single searcher
SearchChain(com.yahoo.component.ComponentId id, Searcher... searchers)

Constructor parameters in com.yahoo.search.searchchain with type arguments of type Searcher

Constructor	Description
AsyncExecution(com.yahoo.component.chain.Chain<? extends Searcher> chain, Execution execution)	Creates an async execution.
AsyncExecution(com.yahoo.component.chain.Chain<? extends Searcher> chain, Execution.Context context)	Creates an async execution.
CommentedSearchChain(java.lang.String comment, com.yahoo.component.chain.Chain<Searcher> searchChain)
Execution(com.yahoo.component.chain.Chain<? extends Searcher> searchChain, Execution.Context context)	The usually best way of creating a new execution for a search chain.
ExecutionFactory(com.yahoo.container.core.ChainsConfig chainsConfig, com.yahoo.search.config.IndexInfoConfig indexInfo, com.yahoo.container.QrSearchersConfig clusters, com.yahoo.component.provider.ComponentRegistry<Searcher> searchers, com.yahoo.vespa.configdefinition.SpecialtokensConfig specialTokens, com.yahoo.language.Linguistics linguistics, com.yahoo.component.provider.ComponentRegistry<com.yahoo.processing.rendering.Renderer> renderers)
SearchChain(com.yahoo.component.chain.Chain<Searcher> chain)	For internal use only!
SearchChain(com.yahoo.component.ComponentId id, java.util.Collection<Searcher> searchers)
SearchChain(com.yahoo.component.ComponentId id, java.util.Collection<Searcher> searchers, java.util.Collection<com.yahoo.component.chain.Phase> phases)	Creates a search chain.

Uses of Searcher in com.yahoo.search.searchers

Subclasses of Searcher in com.yahoo.search.searchers

Modifier and Type	Class	Description
class	CacheControlSearcher	Searcher that sets cache control HTTP headers in response based on query/GET parameters to control caching done by proxy/caches such as YSquid and YTS: max-age=XXX - set with &cachecontrol.maxage parameter stale-while-revalidate=YYY - set with &cachecontrol.staleage no-cache - if Vespa &noCache or &cachecontrol.nocache parameter is set to true
class	ConnectionControlSearcher	Searcher which can enforce HTTP connection close based on query properties.
class	ContainerLatencySearcher	Measure latency in container before query is sent to backend
class	InputCheckingSearcher	Check whether the query tree seems to be "well formed".
class	QueryValidator	Validation of query operators against the schema which is searched
class	RateLimitingSearcher	A simple rate limiter.
class	ValidateMatchPhaseSearcher	Validates that the attribute given as match-phase override is actually a valid numeric attribute with fast-search enabled.
class	ValidateNearestNeighborSearcher	Validates any NearestNeighborItem query items.

Uses of Searcher in com.yahoo.search.statistics

Subclasses of Searcher in com.yahoo.search.statistics

Modifier and Type	Class	Description
class	PeakQpsSearcher	Aggregate peak qps and expose through meta hits and/or log events.
class	TimingSearcher	A searcher which is intended to be useful as a general probe for measuring time consumption a search chain.

Constructor parameters in com.yahoo.search.statistics with type arguments of type Searcher

Constructor	Description
TimeTracker(com.yahoo.component.chain.Chain<? extends Searcher> searchChain)