Package org.elasticsearch.index.mapper

Class NestedValueFetcher

java.lang.Object

org.elasticsearch.index.mapper.NestedValueFetcher

All Implemented Interfaces:

ValueFetcher

public class NestedValueFetcher
extends Object
implements ValueFetcher

Constructor Summary

Constructors

Constructor	Description
NestedValueFetcher(String nestedField, FieldFetcher nestedFieldFetcher)

Method Summary

Modifier and Type	Method	Description
List<Object>	fetchValues(SourceLookup lookup)	Given access to a document's _source, return this field's values.
void	setNextReader(org.apache.lucene.index.LeafReaderContext context)	Update the leaf reader used to fetch values.

Methods inherited from class java.lang.Object

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

Constructor Details

NestedValueFetcher

public NestedValueFetcher(String nestedField,
 FieldFetcher nestedFieldFetcher)

Method Details

fetchValues

public List<Object> fetchValues(SourceLookup lookup)
                         throws IOException

Description copied from interface: ValueFetcher

Given access to a document's _source, return this field's values. In addition to pulling out the values, they will be parsed into a standard form. For example numeric field mappers make sure to parse the source value into a number of the right type. Note that for array values, the order in which values are returned is undefined and should not be relied on.

Specified by:

fetchValues in interface ValueFetcher

Parameters:

lookup - a lookup structure over the document's source.

Returns:

a list a standardized field values.

Throws:

IOException

setNextReader

public void setNextReader(org.apache.lucene.index.LeafReaderContext context)

Description copied from interface: ValueFetcher

Update the leaf reader used to fetch values.

Specified by:

setNextReader in interface ValueFetcher