Class LuceneIndexNIOFS

java.lang.Object

org.eclipse.rdf4j.sail.lucene.AbstractSearchIndex

org.eclipse.rdf4j.sail.lucene.AbstractLuceneIndex

org.eclipse.rdf4j.sail.lucene.impl.LuceneIndex

org.eclipse.rdf4j.sail.lucene.impl.LuceneIndexNIOFS

All Implemented Interfaces:

SearchIndex

public class LuceneIndexNIOFS
extends LuceneIndex

LuceneIndex which uses a NIOFSDirectory instead of MMapDirectory to avoid the JVM crash (see http:// stackoverflow.com/questions/8224843/jvm-crashes-on-lucene-datainput- readvint).

Author:

andriy.nikolov

Field Summary

Fields inherited from class LuceneIndex

currentMonitor

Modifier and Type	Field	Description
protected ReaderMonitor	currentMonitor	This holds IndexReader and IndexSearcher.

Fields inherited from class AbstractLuceneIndex

oldmonitors

Modifier and Type	Field	Description
protected final Collection<AbstractReaderMonitor>	oldmonitors	keep a lit of old monitors that are still iterating but not closed (open iterators), will be all closed on shutdown items are removed from list by ReaderMnitor.endReading() when closing

Fields inherited from class AbstractSearchIndex

defaultNumDocs, maxDocs, wktFields

Modifier and Type	Field	Description
protected int	defaultNumDocs
protected int	maxDocs
protected Set<String>	wktFields

Constructor Summary

Constructors

Constructor	Description
LuceneIndexNIOFS()

Method Summary

Modifier and Type	Method	Description
protected org.apache.lucene.store.Directory	createDirectory(Properties parameters)

Methods inherited from class LuceneIndex

addContextField, addDocument, addIDField, addPredicateField, addResourceField, addStoredOnlyPredicateField, addTextField, begin, clear, clearContexts, commit, copyDocument, createAnalyzer, createQueryAnalyzer, createSimilarity, createSpatialStrategyMapper, deleteDocument, geoQuery, geoRelationQuery, getAnalyzer, getCurrentMonitor, getDirectory, getDocument, getDocument, getDocument, getDocuments, getDocuments, getIndexReader, getIndexSearcher, getIndexWriter, getSnippet, getSpatialContext, getSpatialStrategyMapper, initialize, newBulkUpdate, newDocument, query, rollback, search, search, search, search, shutDown, updateDocument

Modifier and Type	Method	Description
static void	addContextField(String context, org.apache.lucene.document.Document document)	Add the "context" value to the doc
protected void	addDocument(SearchDocument doc)
static void	addIDField(String id, org.apache.lucene.document.Document document)	Stores and indexes an ID in a Document.
static void	addPredicateField(String predicate, String text, org.apache.lucene.document.Document document)
static void	addResourceField(String resourceId, org.apache.lucene.document.Document document)	Stores and indexes the resource ID in a Document.
static void	addStoredOnlyPredicateField(String predicate, String text, org.apache.lucene.document.Document document)
static void	addTextField(String text, org.apache.lucene.document.Document document)
void	begin()	Begins a transaction.
void	clear()	Clears the indexes.
void	clearContexts(Resource... contexts)	This should be called from within a begin-commit-rollback block.
void	commit()	Commits any changes done to the LuceneIndex since the last commit.
protected SearchDocument	copyDocument(SearchDocument doc)
protected org.apache.lucene.analysis.Analyzer	createAnalyzer(Properties parameters)
protected org.apache.lucene.analysis.Analyzer	createQueryAnalyzer(Properties parameters)
protected org.apache.lucene.search.similarities.Similarity	createSimilarity(Properties parameters)
protected com.google.common.base.Function<String, ? extends org.apache.lucene.spatial.SpatialStrategy>	createSpatialStrategyMapper(Map<String,String> parameters)
protected void	deleteDocument(SearchDocument doc)
protected Iterable<? extends DocumentDistance>	geoQuery(IRI geoProperty, org.locationtech.spatial4j.shape.Point p, IRI units, double distance, String distanceVar, Var contextVar)
protected Iterable<? extends DocumentResult>	geoRelationQuery(String relation, IRI geoProperty, String wkt, Var contextVar)
org.apache.lucene.analysis.Analyzer	getAnalyzer()
ReaderMonitor	getCurrentMonitor()	Current monitor holds instance of IndexReader and IndexSearcher It is used to keep track of readers
org.apache.lucene.store.Directory	getDirectory()
org.apache.lucene.document.Document	getDocument(int docId, Set<String> fieldsToLoad)	Returns the lucene hit with the given id of the respective lucene query
protected SearchDocument	getDocument(String id)
org.apache.lucene.document.Document	getDocument(Resource subject, Resource context)	Returns a Document representing the specified Resource and Context combination, or null when no such Document exists yet.
protected Iterable<? extends SearchDocument>	getDocuments(String resourceId)
List<org.apache.lucene.document.Document>	getDocuments(Resource subject)	Returns a list of Documents representing the specified Resource (empty when no such Document exists yet).Each document represent a set of statements with the specified Resource as a subject, which are stored in a specific context
org.apache.lucene.index.IndexReader	getIndexReader()
org.apache.lucene.search.IndexSearcher	getIndexSearcher()
org.apache.lucene.index.IndexWriter	getIndexWriter()
String	getSnippet(String fieldName, String text, org.apache.lucene.search.highlight.Highlighter highlighter)
protected org.locationtech.spatial4j.context.SpatialContext	getSpatialContext(String property)
com.google.common.base.Function<? super String, ? extends org.apache.lucene.spatial.SpatialStrategy>	getSpatialStrategyMapper()
void	initialize(Properties parameters)
protected BulkUpdater	newBulkUpdate()
protected SearchDocument	newDocument(String id, String resourceId, String context)
protected Iterable<? extends DocumentScore>	query(Resource subject, QuerySpec spec)	Parse the passed query.
void	rollback()
org.apache.lucene.search.TopDocs	search(org.apache.lucene.search.Query query)	Evaluates the given query and returns the results as a TopDocs instance.
org.apache.lucene.search.TopDocs	search(org.apache.lucene.search.Query query, int numDocs)	Evaluates the given query and returns the results as a TopDocs instance.
org.apache.lucene.search.TopDocs	search(Resource resource, org.apache.lucene.search.Query query)	Evaluates the given query only for the given resource.
org.apache.lucene.search.TopDocs	search(Resource resource, org.apache.lucene.search.Query query, int numDocs)	Evaluates the given query only for the given resource.
void	shutDown()
protected void	updateDocument(SearchDocument doc)

Methods inherited from class AbstractLuceneIndex

getOldMonitors

Modifier and Type	Method	Description
Collection<AbstractReaderMonitor>	getOldMonitors()

Methods inherited from class AbstractSearchIndex

accept, addDocuments, addRemoveStatements, addStatement, evaluate, getIndexedTypeMapping, getResource, isGeoField, isIndexedTypeStatement, isTypeFilteringEnabled, isTypeStatement, parseLuceneQueryShape, parseQueryPoint, parseQueryShape, removeStatement

Modifier and Type	Method	Description
boolean	accept(Literal literal)	Returns whether the provided literal is accepted by the LuceneIndex to be indexed.
final void	addDocuments(Resource subject, List<Statement> statements)	Add a complete Lucene Document based on these statements.
final void	addRemoveStatements(Collection<Statement> added, Collection<Statement> removed)	Add many statements at the same time, remove many statements at the same time.
final void	addStatement(Statement statement)	Indexes the specified Statement.
final Collection<BindingSet>	evaluate(SearchQueryEvaluator evaluator)
Map<IRI,Set<IRI>>	getIndexedTypeMapping()
protected Resource	getResource(SearchDocument document)	Returns the Resource corresponding with the specified Document.
boolean	isGeoField(String fieldName)	Returns true if the given property contains a geometry.
boolean	isIndexedTypeStatement(Statement statement)	Returns true if the given statement is a type statement of the right type, see LuceneSail.INDEXEDTYPES to use.
boolean	isTypeFilteringEnabled()	is the LuceneSail.INDEXEDTYPES parameter set for this index.
boolean	isTypeStatement(Statement statement)	Returns true if the given statement is a type statement, see LuceneSail.INDEXEDTYPES to use.
protected Object	parseLuceneQueryShape(String property, String value)
protected org.locationtech.spatial4j.shape.Shape	parseQueryPoint(String property, String value)
protected org.locationtech.spatial4j.shape.Shape	parseQueryShape(String property, String value)
final void	removeStatement(Statement statement)	Removes the specified Statement from the indexes.This should be called from within a begin-commit-rollback

Methods inherited from class Object

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

Constructor Details

LuceneIndexNIOFS

public LuceneIndexNIOFS()

Method Details

createDirectory

protected org.apache.lucene.store.Directory createDirectory(Properties parameters)
                                                     throws IOException

Overrides:

createDirectory in class LuceneIndex

Throws:

IOException