LuceneSearch

A Search Engine based on Lucene. Apache Lucene is a free and open-source search engine software library, originally written in Java. Lucene is widely used as a standard foundation for production search applications

This Project uses:

1. Oracle JDK 17
2. Lucene 9.8.1
3. Installation
4. Springboot
5. Planning to add vector db (Pinecone)

• Semantic Search

The easiest way to use Lucene in your project is to import it using Maven. You need to at least import lucene-core (just pasting the following to your pom.xml's dependencies).

org.apache.lucene lucene-core 8.10.1

You may also need Lucene-analyzers-common and lucene-queryparser.

org.apache.lucene lucene-analyzers-common 9.8.1 org.apache.lucene lucene-queryparser 8.10.1

Searching documents: BuildQuery

Query Parsing logic

https://lucene.apache.org/core/2_9_4/queryparsersyntax.html#Overview

Available Type of query in lucene

• BooleanQuery
• ConstantScoreQuery
• CustomScoreQuery
• DisjunctionMaxQuery
• FilteredQuery
• MatchAllDocsQuery
• MultiPhraseQuery
• MultiTermQuery
• PhraseQuery
• RangeQuery
• SpanQuery
• TermQuery
• ValueSourceQuery

BooleanQuery is most important and it follows, AND, OR, MUST, MUST_NOT and SHOULD

BooleanQuery can be created using other other type of query and BooleanQuery itself

You can view this in details here

https://riptutorial.com/lucene/example/19933/booleanquery

Example Boolean Query

String str = "foo bar";
String id = "123456";
BooleanQuery bq = new BooleanQuery();
Query query = qp.parse(str);
bq.add(query, BooleanClause.Occur.MUST);
bq.add(new TermQuery(new Term("id", id), BooleanClause.Occur.MUST_NOT);

Using spring-boot, java 17, maven, react