org.aksw.palmetto.corpus.lucene

Class LuceneCorpusAdapter

java.lang.Object

org.aksw.palmetto.corpus.lucene.LuceneCorpusAdapter

All Implemented Interfaces:

BooleanDocumentSupportingAdapter, CorpusAdapter

Direct Known Subclasses:

WindowSupportingLuceneCorpusAdapter

public class LuceneCorpusAdapter
extends Object
implements BooleanDocumentSupportingAdapter

This class can make usage of a given Lucene index as corpus.

Author:

m.roeder

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.lucene.index.AtomicReaderContext[]	contexts
protected org.apache.lucene.index.DirectoryReader	dirReader
protected String	fieldName
private static org.slf4j.Logger	LOGGER
protected org.apache.lucene.index.AtomicReader[]	reader

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LuceneCorpusAdapter(org.apache.lucene.index.DirectoryReader dirReader, org.apache.lucene.index.AtomicReader[] reader, org.apache.lucene.index.AtomicReaderContext[] contexts, String fieldName)

Method Summary

Modifier and Type	Method and Description
void	close() Closes the Lucene index.
static LuceneCorpusAdapter	create(String indexPath, String fieldName) Creates a corpus adapter which uses the Lucene index with the given path and searches on the field with the given field name.
void	getDocumentsWithWords(com.carrotsearch.hppc.ObjectObjectOpenHashMap<String,com.carrotsearch.hppc.IntArrayList> wordDocMapping) Determines the documents containing the words used as key in the given map.
void	getDocumentsWithWordsAsSet(com.carrotsearch.hppc.ObjectObjectOpenHashMap<String,com.carrotsearch.hppc.IntOpenHashSet> wordDocMapping) Determines the documents containing the words used as key in the given map.
int	getNumberOfDocuments() Returns the number of documents the corpus contains.
private void	requestDocumentsWithWord(String word, com.carrotsearch.hppc.IntArrayList documents)
private void	requestDocumentsWithWordAsSet(String word, com.carrotsearch.hppc.IntOpenHashSet documents)

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

private static final org.slf4j.Logger LOGGER

fieldName

protected String fieldName

dirReader

protected org.apache.lucene.index.DirectoryReader dirReader

reader

protected org.apache.lucene.index.AtomicReader[] reader

contexts

protected org.apache.lucene.index.AtomicReaderContext[] contexts

Constructor Detail

LuceneCorpusAdapter

protected LuceneCorpusAdapter(org.apache.lucene.index.DirectoryReader dirReader,
                              org.apache.lucene.index.AtomicReader[] reader,
                              org.apache.lucene.index.AtomicReaderContext[] contexts,
                              String fieldName)

Method Detail

create

public static LuceneCorpusAdapter create(String indexPath,
                                         String fieldName)
                                  throws org.apache.lucene.index.CorruptIndexException,
                                         IOException

Creates a corpus adapter which uses the Lucene index with the given path and searches on the field with the given field name.

Parameters:

indexPath -

fieldName -

Returns:

Throws:

org.apache.lucene.index.CorruptIndexException

IOException

requestDocumentsWithWordAsSet

private void requestDocumentsWithWordAsSet(String word,
                                           com.carrotsearch.hppc.IntOpenHashSet documents)

close

public void close()

Closes the Lucene index.

Specified by:

close in interface CorpusAdapter

getNumberOfDocuments

public int getNumberOfDocuments()

Description copied from interface: BooleanDocumentSupportingAdapter

Returns the number of documents the corpus contains.

Specified by:

getNumberOfDocuments in interface BooleanDocumentSupportingAdapter

Returns:

the number of documents

getDocumentsWithWordsAsSet

public void getDocumentsWithWordsAsSet(com.carrotsearch.hppc.ObjectObjectOpenHashMap<String,com.carrotsearch.hppc.IntOpenHashSet> wordDocMapping)

Description copied from interface: BooleanDocumentSupportingAdapter

Determines the documents containing the words used as key in the given map. The resulting sets contain the ids of the documents and are inserted into the map.

Specified by:

getDocumentsWithWordsAsSet in interface BooleanDocumentSupportingAdapter

Parameters:

wordDocMapping - a mapping of words to documents in which the results are stored

getDocumentsWithWords

public void getDocumentsWithWords(com.carrotsearch.hppc.ObjectObjectOpenHashMap<String,com.carrotsearch.hppc.IntArrayList> wordDocMapping)

Description copied from interface: BooleanDocumentSupportingAdapter

Determines the documents containing the words used as key in the given map. The resulting int arrays contain the ids of the documents and are inserted into the map.

Specified by:

getDocumentsWithWords in interface BooleanDocumentSupportingAdapter

Parameters:

wordDocMapping - a mapping of words to documents in which the results are stored

requestDocumentsWithWord

private void requestDocumentsWithWord(String word,
                                      com.carrotsearch.hppc.IntArrayList documents)