Class BaseSimpleLuceneIndexer

Abstract Implementation of a simple Full Text Indexer using Lucene.Net which indexes the full text of literal objects and associated a specific Node with that full text.

Inheritance
object
BaseFullTextIndexer
BaseSimpleFullTextIndexer
BaseSimpleLuceneIndexer
LuceneObjectsIndexer
LucenePredicatesIndexer
LuceneSubjectsIndexer
Implements
Inherited Members
Namespace: VDS.RDF.Query.FullText.Indexing.Lucene
Assembly: dotNetRdf.Query.FullText.dll
Syntax
public abstract class BaseSimpleLuceneIndexer : BaseSimpleFullTextIndexer, IFullTextIndexer, IDisposable, IConfigurationSerializable

Constructors

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BaseSimpleLuceneIndexer(Directory, Analyzer, IFullTextIndexSchema, IndexingMode)

Creates a new Simple Lucene Indexer.

Declaration
protected BaseSimpleLuceneIndexer(Directory indexDir, Analyzer analyzer, IFullTextIndexSchema schema, IndexingMode mode)
Parameters
Type Name Description
Directory indexDir

Directory.
Analyzer analyzer

Analyzer.
IFullTextIndexSchema schema

Index Schema.
IndexingMode mode

Indexing Mode.

Properties

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IndexingMode

Gets the Indexing Mode used.

Declaration
public override IndexingMode IndexingMode { get; }
Property Value
Type Description
IndexingMode
Overrides

Methods

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CreateDocument(string, INode, string)

Creates a Lucene document to add to the index.

Declaration
protected virtual Document CreateDocument(string graphUri, INode n, string text)
Parameters
Type Name Description
string graphUri

Graph URI.
INode n

Node.
string text

Full Text.
Returns
Type Description
Document
Remarks

May be overridden by derived classes that wish to implement custom indexing behaviour.

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DisposeInternal()

Lucene dispose logic that ensures changes to the index are discarded.

Declaration
protected override void DisposeInternal()
Overrides
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Flush()

Flushes any changes to the index.

Declaration
public override void Flush()
Overrides
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GetHash(string, INode, string)

Gets the hash that should be included as part of a document so that it can be unindexed if desired.

Declaration
protected string GetHash(string graphUri, INode n, string text)
Parameters
Type Name Description
string graphUri

Graph URI.
INode n

Node.
string text

Full Text.
Returns
Type Description
string
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Index(string, INode, string)

Indexes a Node and some full text as a Lucene document.

Declaration
protected override void Index(string graphUri, INode n, string text)
Parameters
Type Name Description
string graphUri

Graph URI.
INode n

Node.
string text

Full Text.
Overrides
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SerializeConfiguration(ConfigurationSerializationContext)

Serializes the Configuration of the Indexer.

Declaration
public virtual void SerializeConfiguration(ConfigurationSerializationContext context)
Parameters
Type Name Description
ConfigurationSerializationContext context

Serialization Context.
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Unindex(string, INode, string)

Unindexes a Node and some full text.

Declaration
protected override void Unindex(string graphUri, INode n, string text)
Parameters
Type Name Description
string graphUri

Graph URI.
INode n

Node.
string text

Full Text.
Overrides

Implements

Extension Methods