de.datexis.index.impl

Class LuceneIndex

java.lang.Object

de.datexis.index.impl.LuceneIndex

Direct Known Subclasses:

LuceneWordIndex

public abstract class LuceneIndex
extends Object

Author:

Sebastian Arnold

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.lucene.analysis.Analyzer	analyzer
protected static org.slf4j.Logger	log
protected org.deeplearning4j.text.tokenization.tokenizer.TokenPreProcess	preprocessor
protected org.apache.lucene.index.IndexReader	reader
protected org.apache.lucene.search.IndexSearcher	searcher
protected info.debatty.java.stringsimilarity.interfaces.NormalizedStringSimilarity	sim

Constructor Summary

Constructors

Constructor and Description
LuceneIndex()

Method Summary

Modifier and Type	Method and Description
protected void	addNameField(org.apache.lucene.document.Document doc, String name, String value) A NameField is a tokenized lowercase field in Lucene.
protected void	addStringField(org.apache.lucene.document.Document doc, String name, String value) A StringField is a non-tokenized field in Lucene.
protected void	addTextField(org.apache.lucene.document.Document doc, String name, String value, org.apache.lucene.document.Field.Store store) A TextField is a tokenized field in Lucene.
protected abstract org.apache.lucene.analysis.Analyzer	buildAnalyzer()
protected boolean	openIndex(org.apache.lucene.store.Directory index)
boolean	openIndex(Resource path) tries to open an existing index from given path
protected String	splitString(String name, String suffix)

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.slf4j.Logger log

reader

protected org.apache.lucene.index.IndexReader reader

searcher

protected org.apache.lucene.search.IndexSearcher searcher

analyzer

protected org.apache.lucene.analysis.Analyzer analyzer

sim

protected final info.debatty.java.stringsimilarity.interfaces.NormalizedStringSimilarity sim

preprocessor

protected final org.deeplearning4j.text.tokenization.tokenizer.TokenPreProcess preprocessor

Constructor Detail

LuceneIndex

public LuceneIndex()

Method Detail

openIndex

public boolean openIndex(Resource path)
                  throws IOException

tries to open an existing index from given path

Throws:

IOException

openIndex

protected boolean openIndex(org.apache.lucene.store.Directory index)
                     throws IOException

Throws:

IOException

buildAnalyzer

protected abstract org.apache.lucene.analysis.Analyzer buildAnalyzer()

splitString

protected String splitString(String name,
                             String suffix)

addTextField

protected void addTextField(org.apache.lucene.document.Document doc,
                            String name,
                            String value,
                            org.apache.lucene.document.Field.Store store)

A TextField is a tokenized field in Lucene.

addStringField

protected void addStringField(org.apache.lucene.document.Document doc,
                              String name,
                              String value)

A StringField is a non-tokenized field in Lucene. We always store.

addNameField

protected void addNameField(org.apache.lucene.document.Document doc,
                            String name,
                            String value)

A NameField is a tokenized lowercase field in Lucene. We always store.