org.apache.solr.handler.clustering
Class SearchClusteringEngine

java.lang.Object
  org.apache.solr.handler.clustering.ClusteringEngine
      org.apache.solr.handler.clustering.SearchClusteringEngine

Direct Known Subclasses:

CarrotClusteringEngine

public abstract class SearchClusteringEngine
extends ClusteringEngine

Base class for clustering engines performing cluster analysis on search results.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Field Summary

Fields inherited from class org.apache.solr.handler.clustering.ClusteringEngine

DEFAULT_ENGINE_NAME, ENGINE_NAME

Constructor Summary

SearchClusteringEngine()

Method Summary

abstract Object	cluster(Query query, SolrDocumentList solrDocumentList, Map<SolrDocument,Integer> docIds, SolrQueryRequest sreq) Do the clustering, return a clusters structure to be appended to SolrQueryResponse.
protected Set<String>	getFieldsToLoad(SolrQueryRequest sreq) Returns the set of field names to load.

Methods inherited from class org.apache.solr.handler.clustering.ClusteringEngine

getName, init

Methods inherited from class java.lang.Object

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

Constructor Detail

SearchClusteringEngine

public SearchClusteringEngine()

Method Detail

cluster

public abstract Object cluster(Query query,
                               SolrDocumentList solrDocumentList,
                               Map<SolrDocument,Integer> docIds,
                               SolrQueryRequest sreq)

Do the clustering, return a clusters structure to be appended to SolrQueryResponse.

getFieldsToLoad

protected Set<String> getFieldsToLoad(SolrQueryRequest sreq)

Returns the set of field names to load. Concrete classes can override this method if needed. Default implementation returns null, that is, all stored fields are loaded.

Returns:

The set of field names to load.