Lucene is a powerful and widely used open source full-text search engine written in Java.
Tutorial Details:
As a full-text search engine, Lucene needs little introduction. Lucene, an open source project hosted by Apache, aims to produce high-performance full-text indexing and search software. The Java Lucene product itself is a high-performance, high capacity, full-text search tool used by many popular Websites such as the Wikipedia online encyclopedia and TheServerSide.com, as well as in many, many Java applications. It is a fast, reliable tool that has proved its value in countless demanding production environments.
The first step in any Lucene application involves indexing your data. Lucene needs to create its own set of indexes, using your data, so it can perform high-performance full-text searching, filtering, and sorting operations on your data.
This is a fairly straightforward process. First of all, you need to create an IndexWriter object, which you use to create the Lucene index and write it to disk. Lucene is very flexible, and there are many options. Here, we will limit ourselves to creating a simple index structure in the "index" directory:
Directory directory = FSDirectory.getDirectory("index", true);
Analyzer analyser = new StandardAnalyzer();
IndexWriter writer = new IndexWriter(directory, analyser, true);
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