Book Image

Lucene 4 Cookbook

By : Edwood Ng, Vineeth Mohan
Book Image

Lucene 4 Cookbook

By: Edwood Ng, Vineeth Mohan

Overview of this book

Table of Contents (16 chapters)
Lucene 4 Cookbook
About the Authors
About the Reviewers

Implementing highlighting

Highlighting offers the ability to highlight search terms in results, in order to show where matches occur. It helps to improve the user experience by allowing a user to see how matching documents are found. This is especially useful when displaying a text result that contains several lines of text.

The highlighting feature starts with the highlighter class. It can be configured with a formatter and an encoder to render the results. Then, we retrieve a TokenStream from the matching Field and pass it on to the Highlighter to render highlighting results.

Getting ready…

Here is the Maven dependency:


How to do it…

Let's take a look at a sample implementation:

StandardAnalyzer analyzer = new StandardAnalyzer();
Directory directory = new RAMDirectory();
IndexWriterConfig config...