io.datalayer.lucene.index.LuceneSimple.java Source code

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package io.datalayer.lucene.index;

import java.io.File;
import java.io.IOException;

import org.slf4j.LoggerFactory;

import org.slf4j.Logger;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.queryparser.classic.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.LockObtainFailedException;
import org.apache.lucene.util.Version;

public class LuceneSimple {
    private static final Logger LOGGER = LoggerFactory.getLogger(LuceneSimple.class);

    public static void main(String... args) throws Exception {
        index("/Users/androidyou/Documents/lucence/data/test.txt", "/Users/androidyou/Documents/lucence/index");
        search("/Users/androidyou/Documents/lucence/index", "nonexistedkeyworld");
        search("/Users/androidyou/Documents/lucence/index", "apache");

    }

    private static void index(String datafolder, String indexfolder)
            throws CorruptIndexException, LockObtainFailedException, IOException {
        Analyzer a = new StandardAnalyzer(Version.LUCENE_46);
        Directory d = FSDirectory.open(new File(indexfolder));
        IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_46,
                new StandardAnalyzer(Version.LUCENE_46));
        IndexWriter indexWriter = new IndexWriter(d, config);

        Document doc = new Document();
        // Fieldable contentfield=new Field("content", new
        // FileReader(datafolder));
        // doc.add(contentfield);
        // Fieldable namefield=new Field("filename",datafolder, Store.YES,
        // Index.NOT_ANALYZED);
        // doc.add(namefield);

        indexWriter.addDocument(doc);
        indexWriter.commit();

    }

    private static void search(String indexpath, String keyword) throws Exception, IOException {
        IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(indexpath)));
        IndexSearcher searcher = new IndexSearcher(reader);
        LOGGER.info("Search  keyword " + keyword);
        Query query = new QueryParser(Version.LUCENE_46, "content", new StandardAnalyzer(Version.LUCENE_46))
                .parse(keyword);

        TopDocs docs = searcher.search(query, 10);
        LOGGER.info("hits " + docs.totalHits);
        for (ScoreDoc doc : docs.scoreDocs) {
            LOGGER.info("doc id" + doc.doc + "doc filename" + searcher.doc(doc.doc).get("filename"));
        }

    }

}