com.atlassian.jira.issue.statistics.util

Class OneDimensionalDocHitCollector

java.lang.Object

org.apache.lucene.search.Collector

com.atlassian.jira.issue.statistics.util.FieldableDocumentHitCollector

com.atlassian.jira.issue.statistics.util.OneDimensionalDocHitCollector

public class OneDimensionalDocHitCollector
extends FieldableDocumentHitCollector

A HitCollector that accesses the document directly to get the values for a field. This HitCollector has low memory usage (it iterates over the documents as neccessary), and is useful when you are doing a collection where there are a limited number of documents, but a large number of terms in the entire index.

Constructor Summary

Constructors

Constructor and Description
OneDimensionalDocHitCollector(String luceneGroupField, Map result, org.apache.lucene.search.IndexSearcher searcher)

Method Summary

Modifier and Type	Method and Description
void	collect(org.apache.lucene.document.Document d)
protected org.apache.lucene.document.FieldSelector	getFieldSelector() This method should cache up the FieldSelector, such that overhead will be as small as possible when this method is called from the FieldableDocumentHitCollector.collect(int) method.

Methods inherited from class com.atlassian.jira.issue.statistics.util.FieldableDocumentHitCollector

acceptsDocsOutOfOrder, collect, setNextReader, setScorer

Methods inherited from class java.lang.Object

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

Constructor Detail

OneDimensionalDocHitCollector

public OneDimensionalDocHitCollector(String luceneGroupField,
                                     Map result,
                                     org.apache.lucene.search.IndexSearcher searcher)

Method Detail

getFieldSelector

protected org.apache.lucene.document.FieldSelector getFieldSelector()

Description copied from class: FieldableDocumentHitCollector

This method should cache up the FieldSelector, such that overhead will be as small as possible when this method is called from the FieldableDocumentHitCollector.collect(int) method.

Specified by:

getFieldSelector in class FieldableDocumentHitCollector

Returns:

a FieldSelector

collect

public void collect(org.apache.lucene.document.Document d)

Specified by:

collect in class FieldableDocumentHitCollector