org.apache.solr.search.grouping.distributed.shardresultserializer

Class TopGroupsResultTransformer

java.lang.Object

org.apache.solr.search.grouping.distributed.shardresultserializer.TopGroupsResultTransformer

All Implemented Interfaces:

ShardResultTransformer<java.util.List<Command>,java.util.Map<java.lang.String,?>>

public class TopGroupsResultTransformer
extends java.lang.Object
implements ShardResultTransformer<java.util.List<Command>,java.util.Map<java.lang.String,?>>

Implementation for transforming TopGroups and TopDocs into a NamedList structure and visa versa.

Field Summary

Fields

Modifier and Type	Field and Description
private ResponseBuilder	rb

Constructor Summary

Constructors

Constructor and Description
TopGroupsResultTransformer(ResponseBuilder rb)

Method Summary

Modifier and Type	Method and Description
private org.apache.lucene.document.Document	retrieveDocument(SchemaField uniqueField, int doc)
protected NamedList	serializeTopDocs(QueryCommandResult result)
protected NamedList	serializeTopGroups(org.apache.lucene.search.grouping.TopGroups<java.lang.String> data, SchemaField groupField)
NamedList	transform(java.util.List<Command> data) Transforms data to a NamedList structure for serialization purposes.
java.util.Map<java.lang.String,?>	transformToNative(NamedList<NamedList> shardResponse, org.apache.lucene.search.Sort groupSort, org.apache.lucene.search.Sort sortWithinGroup, java.lang.String shard) Transforms the specified shard response into native structures.

Methods inherited from class java.lang.Object

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

Field Detail

rb

private final ResponseBuilder rb

Constructor Detail

TopGroupsResultTransformer

public TopGroupsResultTransformer(ResponseBuilder rb)

Method Detail

transform

public NamedList transform(java.util.List<Command> data)
                    throws java.io.IOException

Transforms data to a NamedList structure for serialization purposes.

Specified by:

transform in interface ShardResultTransformer<java.util.List<Command>,java.util.Map<java.lang.String,?>>

Parameters:

data - The data to be transformed

Returns:

NamedList structure

Throws:

java.io.IOException - If I/O related errors occur during transforming

transformToNative

public java.util.Map<java.lang.String,?> transformToNative(NamedList<NamedList> shardResponse,
                                                           org.apache.lucene.search.Sort groupSort,
                                                           org.apache.lucene.search.Sort sortWithinGroup,
                                                           java.lang.String shard)

Transforms the specified shard response into native structures.

Specified by:

transformToNative in interface ShardResultTransformer<java.util.List<Command>,java.util.Map<java.lang.String,?>>

Parameters:

shardResponse - The shard response containing data in a NamedList structure

groupSort - The group sort

sortWithinGroup - The sort inside a group

shard - The shard address where the response originated from

Returns:

native structure of the data

serializeTopGroups

protected NamedList serializeTopGroups(org.apache.lucene.search.grouping.TopGroups<java.lang.String> data,
                                       SchemaField groupField)
                                throws java.io.IOException

Throws:

java.io.IOException

serializeTopDocs

protected NamedList serializeTopDocs(QueryCommandResult result)
                              throws java.io.IOException

Throws:

java.io.IOException

retrieveDocument

private org.apache.lucene.document.Document retrieveDocument(SchemaField uniqueField,
                                                             int doc)
                                                      throws java.io.IOException

Throws:

java.io.IOException