Searcher

package test;

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

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.queryParser.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.util.Version;

public class Searcher {

    IndexSearcher indexSearcher;
    QueryParser queryParser;
    Query query;

    public Searcher(String indexDirectoryPath) throws IOException{
        Directory indexDirectory = FSDirectory.open(new File(indexDirectoryPath));
        indexSearcher = new IndexSearcher(indexDirectory);
        queryParser = new QueryParser(Version.LUCENE_36, LuceneConstants.CONTENTS, new StandardAnalyzer(Version.LUCENE_36));
    }

    public TopDocs search(String searchQuery) throws IOException, ParseException {
        query = queryParser.parse(searchQuery);
        return indexSearcher.search(query, LuceneConstants.MAX_SEARCH);
    }

    public TopDocs search(Query query) throws IOException, ParseException {
        return indexSearcher.search(query, LuceneConstants.MAX_SEARCH);
    }

    public Document getDocument(ScoreDoc scoreDoc) throws CorruptIndexException, IOException{
        return indexSearcher.doc(scoreDoc.doc);
    }

    public void close() throws IOException{
        indexSearcher.close();
    }
}