aos.lucene.search.msc.Fragments.java Source code

Introduction

Here is the source code for aos.lucene.search.msc.Fragments.java

Source

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package aos.lucene.search.msc;

import junit.framework.TestCase;

import java.io.File;

import org.apache.lucene.analysis.SimpleAnalyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.*;
import org.apache.lucene.search.*;
import org.apache.lucene.analysis.*;
import org.apache.lucene.index.*;
import org.apache.lucene.util.*;

import io.aos.lucene.util.TestUtil;

// From chapter 3
public class Fragments {

    public void openSearcher() throws Exception {
        Directory dir = FSDirectory.open(new File("/path/to/index"));
        IndexReader reader = DirectoryReader.open(dir);
        IndexSearcher searcher = new IndexSearcher(reader);
    }

    public void nrtReader() throws Exception {
        IndexReader reader = null;
        IndexSearcher searcher;

        IndexReader newReader = reader.reopen();
        if (reader != newReader) {
            reader.close();
            reader = newReader;
            searcher = new IndexSearcher(reader);
        }

    }

    public void testSearchSigs() throws Exception {
        Query query = null;
        Filter filter = null;
        TopDocs hits;
        TopFieldDocs fieldHits;
        Sort sort = null;
        Collector collector = null;
        int n = 10;
        IndexSearcher searcher = null;

        hits = searcher.search(query, n);
        hits = searcher.search(query, filter, n);
        fieldHits = searcher.search(query, filter, n, sort);
        searcher.search(query, collector);
        searcher.search(query, filter, collector);
    }

    public void queryParserOperator() throws Exception {
        Analyzer analyzer = null;

        QueryParser parser = new QueryParser(Version.LUCENE_46, "contents", analyzer);
        parser.setDefaultOperator(QueryParser.AND_OPERATOR);

    }
}