de.pangaea.metadataportal.search
Class LuceneCollector

java.lang.Object
  org.apache.lucene.search.Collector
      de.pangaea.metadataportal.search.LuceneCollector

public final class LuceneCollector
extends org.apache.lucene.search.Collector

Internal implementation of a Lucene Collector for the collector API of SearchService.

Author:

Uwe Schindler

Nested Class Summary

protected static class

LuceneCollector.StopException Thrown to stop collecting of results when SearchResultCollector.collect(de.pangaea.metadataportal.search.SearchResultItem) returns false.

Field Summary

protected int[]	docIds
protected float[]	scores

Constructor Summary

protected

LuceneCollector(int bufferSize, SearchResultCollector coll, Config config, org.apache.lucene.document.FieldSelector fields) Creates an instance using the specified buffer size wrapping the SearchResultCollector.

Method Summary

boolean	acceptsDocsOutOfOrder()
void	collect(int doc) Called by Lucene to collect search result items.
protected void	flushBuffer() Flushes the internal buffer by calling SearchResultCollector.collect(de.pangaea.metadataportal.search.SearchResultItem) with the loaded document instance for each buffer entry.
void	setNextReader(org.apache.lucene.index.IndexReader reader, int docBase)
void	setScorer(org.apache.lucene.search.Scorer scorer)

Methods inherited from class java.lang.Object

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

Field Detail

docIds

protected int[] docIds

scores

protected float[] scores

Constructor Detail

LuceneCollector

protected LuceneCollector(int bufferSize,
                          SearchResultCollector coll,
                          Config config,
                          org.apache.lucene.document.FieldSelector fields)

Creates an instance using the specified buffer size wrapping the SearchResultCollector.

Method Detail

flushBuffer

protected void flushBuffer()
                    throws IOException

Flushes the internal buffer by calling SearchResultCollector.collect(de.pangaea.metadataportal.search.SearchResultItem) with the loaded document instance for each buffer entry.

Throws:

IOException

setScorer

public final void setScorer(org.apache.lucene.search.Scorer scorer)

Specified by:

setScorer in class org.apache.lucene.search.Collector

setNextReader

public final void setNextReader(org.apache.lucene.index.IndexReader reader,
                                int docBase)
                         throws IOException

Specified by:

setNextReader in class org.apache.lucene.search.Collector

Throws:

IOException

collect

public final void collect(int doc)
                   throws IOException

Called by Lucene to collect search result items.

Specified by:

collect in class org.apache.lucene.search.Collector

Throws:

IOException

acceptsDocsOutOfOrder

public boolean acceptsDocsOutOfOrder()

Specified by:

acceptsDocsOutOfOrder in class org.apache.lucene.search.Collector