Package org.elasticsearch.search.lookup

Class SearchLookup

java.lang.Object

org.elasticsearch.search.lookup.SearchLookup

public class SearchLookup
extends Object

Constructor Summary

Constructors

Constructor	Description
SearchLookup(Function<String,MappedFieldType> fieldTypeLookup, BiFunction<MappedFieldType,Supplier<SearchLookup>,IndexFieldData<?>> fieldDataLookup)	Create the top level field lookup for a search request.

Method Summary

Modifier and Type	Method	Description
MappedFieldType	fieldType(String fieldName)
SearchLookup	forkAndTrackFieldReferences(String field)	Creates a copy of the current SearchLookup that looks fields up in the same way, but also tracks field references in order to detect cycles and prevent resolving fields that depend on more than MAX_FIELD_CHAIN_DEPTH other fields.
IndexFieldData<?>	getForField(MappedFieldType fieldType)
LeafSearchLookup	getLeafSearchLookup(org.apache.lucene.index.LeafReaderContext context)
SourceLookup	source()

Methods inherited from class java.lang.Object

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

Constructor Details

SearchLookup

public SearchLookup(Function<String,MappedFieldType> fieldTypeLookup,
 BiFunction<MappedFieldType,Supplier<SearchLookup>,IndexFieldData<?>> fieldDataLookup)

Create the top level field lookup for a search request. Provides a way to look up fields from doc_values, stored fields, or _source.

Method Details

forkAndTrackFieldReferences

public final SearchLookup forkAndTrackFieldReferences(String field)

Creates a copy of the current SearchLookup that looks fields up in the same way, but also tracks field references in order to detect cycles and prevent resolving fields that depend on more than MAX_FIELD_CHAIN_DEPTH other fields.

Parameters:

field - the field being referred to, for which fielddata needs to be loaded

Returns:

the new lookup

Throws:

IllegalArgumentException - if a cycle is detected in the fields required to build doc values, or if the field being resolved depends on more than MAX_FIELD_CHAIN_DEPTH

getLeafSearchLookup

public LeafSearchLookup getLeafSearchLookup(org.apache.lucene.index.LeafReaderContext context)

fieldType

public MappedFieldType fieldType(String fieldName)

getForField

public IndexFieldData<?> getForField(MappedFieldType fieldType)

source

public SourceLookup source()