Package com.yahoo.prelude

Class IndexFacts

java.lang.Object

com.yahoo.prelude.IndexFacts

public class IndexFacts
extends Object

A central repository for information about indices. Standard usage is

 IndexFacts.Session session = indexFacts.newSession(query); // once when starting to process a query
 session.getIndex(indexName).[get index info]
 

Author:

Steinar Knutsen

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	IndexFacts.Session	Create an instance of this to look up index facts with a given query.

Constructor Summary

Constructors

Constructor	Description
IndexFacts()
IndexFacts(IndexModel indexModel)

Method Summary

Modifier and Type	Method	Description
List<String>	clustersHavingSearchDefinition(String searchDefinitionName)
IndexFacts	freeze()	Freeze this to prevent further changes.
String	getDefaultPosition(String sdName)
boolean	hasNGramIndices()	Whether this contains any index which has isNGram()==true.
boolean	isFrozen()	Returns whether it is permissible to update this object
IndexFacts.Session	newSession(Query query)
IndexFacts.Session	newSession(Collection<String> sources, Collection<String> restrict)
IndexFacts.Session	newSession(Collection<String> sources, Collection<String> restrict, Set<String> candidateDocumentTypes)

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexFacts

public IndexFacts()

IndexFacts

public IndexFacts(IndexModel indexModel)

Method Detail

clustersHavingSearchDefinition

public List<String> clustersHavingSearchDefinition(String searchDefinitionName)

freeze

public IndexFacts freeze()

Freeze this to prevent further changes.

Returns:

this for chaining

hasNGramIndices

public boolean hasNGramIndices()

Whether this contains any index which has isNGram()==true. This is free to ask on a frozen instance.

isFrozen

public boolean isFrozen()

Returns whether it is permissible to update this object

getDefaultPosition

public String getDefaultPosition(String sdName)

newSession

public IndexFacts.Session newSession(Query query)

newSession

public IndexFacts.Session newSession(Collection<String> sources,
                                     Collection<String> restrict)

newSession

public IndexFacts.Session newSession(Collection<String> sources,
                                     Collection<String> restrict,
                                     Set<String> candidateDocumentTypes)