3/18/2023 0 Comments Apache lucene index![]() I used a constructor that takes three arguments. An IndexWriter object is used to create and update the index. The first thing it does is to create an index via its createIndex() method. The second text file, nicole-foods.txt, lists some foods that Nicole likes. The first one, deron-foods.txt, lists some foods that I like. Two text files in the "filesToIndex" directory will be indexed. Since Lucene is a fairly involved API, it can be a good idea to reference the Lucene source code and javadocs in your project build path, as shown here. The project utilizes that lucene-core jar W file. We have a directory called "indexDirectory". We have a directory called "filesToIndex" that contains text files that we are going to index. The demonstration project's structure is shown here. These are conceptually two different tasks. This example will both create an index and perform searches against the index. Likewise, when we create an index based on documents, we can query the index to find out what documents match our search terms. What is an index? An index is similar to an index at the back of the book, where you can look up search terms and find their corresponding pages in a book. In this tutorial, I'll create an index based on text files in a directory, and then I'll perform several searches on that index for various search terms. ![]() One good way to start becoming familiar with Lucene is to begin with a simple application. In fact, Eclipse S W uses Lucene for its great search capabilities. ![]() If you'd like to add customized search capabilities to an application, Lucene can be a great choice. ![]()
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