Uses of Class
com.yahoo.search.Searcher

Packages that use Searcher

Package	Description
ai.vespa.search.llm
com.yahoo.prelude.cluster	Cluster monitoring for content clusters queried over fnet.
com.yahoo.prelude.querytransform
com.yahoo.prelude.searcher
com.yahoo.prelude.semantics
com.yahoo.prelude.statistics
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.grouping.result
com.yahoo.search.grouping.vespa
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.match
com.yahoo.search.pagetemplates
com.yahoo.search.query.rewrite
com.yahoo.search.query.rewrite.rewriters
com.yahoo.search.querytransform	Vespa search platform query transformation infrastructure.
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.searchchain.testutil
com.yahoo.search.searchers	Various useful searchers
com.yahoo.search.significance
com.yahoo.search.statistics
com.yahoo.search.yql	YQL+ integration.

Uses of Searcher in ai.vespa.search.llm

Subclasses of Searcher in ai.vespa.search.llm

Modifier and Type	Class	Description
class	LLMSearcher	Base class for LLM searchers.
class	RAGSearcher	An LLM searcher that uses the RAG (Retrieval-Augmented Generation) model to generate completions.

Uses of Searcher in com.yahoo.prelude.cluster

Subclasses of Searcher in com.yahoo.prelude.cluster

Modifier and Type	Class	Description
class	ClusterSearcher	A searcher which forwards to a cluster of monitored native Vespa backends.

Uses of Searcher in com.yahoo.prelude.querytransform

Subclasses of Searcher in com.yahoo.prelude.querytransform

Modifier and Type	Class	Description
class	CJKSearcher	Search to do necessary transforms if the query is in segmented in a CJK language.
class	CollapsePhraseSearcher	Make single item phrases in query into single word items.
class	LiteralBoostSearcher	Adds rank terms to boost hits matching exact literals fields using info from indexing commands.
class	NonPhrasingSearcher	Detects and removes certain phrases from the query.
class	NoRankingSearcher	Avoid doing relevance calculations if sorting only on attributes.
class	NormalizingSearcher	Normalizes accents
class	PhrasingSearcher	Detects query phrases.
class	RecallSearcher	This searcher parses the content of the "recall" query property as a filter expression alongside a placeholder query string.
class	StemmingSearcher	Replaces query terms with their stems

Uses of Searcher in com.yahoo.prelude.searcher

Subclasses of Searcher in com.yahoo.prelude.searcher

Modifier and Type	Class	Description
class	BlendingSearcher	Flattens a result consisting of multiple hit groups containing hits into a single flat list of hits.
class	FieldCollapsingSearcher	A searcher which removes hits which has an already seen value of a given field.
class	FillSearcher	This searcher fills the results in the first phase.
class	JSONDebugSearcher	Save the query in the incoming state to a meta hit in the result.
class	JuniperSearcher	Converts juniper highlighting to XML style
class	MultipleResultsSearcher	Groups hits according to document type.
class	PosSearcher	A searcher converting human-readable position parameters into internal format.
class	QuotingSearcher	A searcher which does quoting based on a quoting table.
class	ValidatePredicateSearcher	Checks that predicate queries don't use values outside the defined upper/lower bounds.
class	ValidateSortingSearcher	Check sorting specification makes sense to the search cluster before passing it on to the backend.

Uses of Searcher in com.yahoo.prelude.semantics

Subclasses of Searcher in com.yahoo.prelude.semantics

Modifier and Type	Class	Description
class	SemanticSearcher	Analyzes query semantics and enhances the query to reflect findings

Uses of Searcher in com.yahoo.prelude.statistics

Subclasses of Searcher in com.yahoo.prelude.statistics

Modifier and Type	Class	Description
class	StatisticsSearcher	A searcher to gather statistics such as queries completed and query latency.

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
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

Modifier	Constructor	Description
	FederationTarget(com.yahoo.component.chain.Chain<Searcher> chain, 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.grouping.result

Subclasses of Searcher in com.yahoo.search.grouping.result

Modifier and Type	Class	Description
class	FlatteningSearcher	Flattens a grouping result into a flat list of hits on the top level in the returned result.

Uses of Searcher in com.yahoo.search.grouping.vespa

Subclasses of Searcher in com.yahoo.search.grouping.vespa

Modifier and Type	Class	Description
class	GroupingExecutor	Executes the grouping requests set up by other searchers.

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.match

Subclasses of Searcher in com.yahoo.search.match

Modifier and Type	Class	Description
class	DocumentDb	A searchable database of documents

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.querytransform

Subclasses of Searcher in com.yahoo.search.querytransform

Modifier and Type	Class	Description
class	AllLowercasingSearcher	Transform all terms in the incoming query tree and highlight terms to lower case.
class	BooleanSearcher	Searcher that builds a PredicateItem from the &boolean properties and inserts it into a query.
class	DefaultPositionSearcher	If position attribute has not been set, it will be set here.
class	LowercasingSearcher	Traverse a query tree and lowercase terms based on decision made in subclasses.
class	NGramSearcher	Handles NGram indexes by splitting query terms to them into grams and combining summary field values from such fields into the original text.
class	RangeQueryOptimizer	Finds and optimizes ranges in queries: For single value attributes c1 $lt; x AND x > c2 becomes x IN <c1; c2>.
class	SortingDegrader	If the query is eligible, specify that the query should degrade if it causes too many hits to avoid excessively expensive queries.
class	VespaLowercasingSearcher	Transform terms in query tree to lower case based on Vespa index settings.
class	WandSearcher	Searcher that will create a Vespa WAND item from a list of tokens with weights.
class	WeakAndReplacementSearcher	Recursively replaces all instances of OrItems with WeakAndItems if the query property weakand.replace is true.

Uses of Searcher in com.yahoo.search.result

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

Modifier and Type	Method	Description
Object	Hit.getSearcherSpecificMetaData(Searcher searcher)	Returns data attached to this hit for this searcher, or null if none
void	Hit.setSearcherSpecificMetaData(Searcher searcher, 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
final 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
final com.yahoo.component.chain.Chain<Searcher>	SearchChainRegistry.getChain(com.yahoo.component.ComponentId id)
final com.yahoo.component.chain.Chain<Searcher>	SearchChainRegistry.getChain(String componentSpecification)
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

Modifier	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

Modifier	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(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, IndexInfoConfig indexInfo, SchemaInfoConfig schemaInfo, 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, Executor executor)
	ExecutionFactory(com.yahoo.container.core.ChainsConfig chainsConfig, IndexInfoConfig indexInfo, SchemaInfo schemaInfo, 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, Executor executor)
	SearchChain(com.yahoo.component.chain.Chain<Searcher> chain)	For internal use only!
	SearchChain(com.yahoo.component.ComponentId id, Collection<Searcher> searchers)
	SearchChain(com.yahoo.component.ComponentId id, Collection<Searcher> searchers, Collection<com.yahoo.component.chain.Phase> phases)	Creates a search chain.

Uses of Searcher in com.yahoo.search.searchchain.testutil

Subclasses of Searcher in com.yahoo.search.searchchain.testutil

Modifier and Type	Class	Description
class	DocumentSourceSearcher	Implements a document source.

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	ChunkLimitingSearcher	Removes all but the top-n highest scoring entries for a string array field.
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	OpportunisticWeakAndSearcher	Will opportunistically replace the WeakAND with an AND as it is faster.
class	QueryValidator	Validation of query operators against the schema which is searched
class	RateLimitingSearcher	A simple rate limiter.
class	ValidateFuzzySearcher	Validates any FuzzyItem query items.
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.
class	ValidateSameElementSearcher	Validates any SameElementItem query items.

Uses of Searcher in com.yahoo.search.significance

Subclasses of Searcher in com.yahoo.search.significance

Modifier and Type	Class	Description
class	SignificanceSearcher	Sets significance values on word items in the query tree.

Uses of Searcher in com.yahoo.search.statistics

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

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

Uses of Searcher in com.yahoo.search.yql

Subclasses of Searcher in com.yahoo.search.yql

Modifier and Type	Class	Description
class	FieldFiller	Ensure the fields specified in Presentation.getSummaryFields() are available after filling phase.
class	FieldFilter	Remove fields which are not explicitly requested, if any field is explicitly requested.
class	MinimalQueryInserter	Minimal combinator for YQL+ syntax and heuristically parsed user queries.