Class DocumentStats

java.lang.Object

io.fluxzero.common.api.search.DocumentStats

public class DocumentStats
extends Object

Represents aggregate statistics for a group of documents, including values for specified fields.

Grouping is defined by a Group key (based on document field values), and statistics are computed per requested field path.

See Also:

• DocumentStats.FieldStats

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DocumentStats.FieldStats	Statistical summary for a single document field.

Constructor Summary

Constructors

Constructor	Description
DocumentStats()

Method Summary

Modifier and Type	Method	Description
static List<DocumentStats>	compute(Stream<Document> documents, List<String> fields, List<String> groupBy)	Computes document statistics from a stream of documents.

Methods inherited from class Object

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

Constructor Details

DocumentStats

public DocumentStats()

Method Details

compute

public static List<DocumentStats> compute(Stream<Document> documents,
 List<String> fields,
 List<String> groupBy)

Computes document statistics from a stream of documents.

Parameters:

documents - Stream of input documents

fields - Fields to compute statistics for

groupBy - Paths to group by

Returns:

A list of DocumentStats, one per group