Example usage for org.apache.lucene.search IndexSearcher getIndexReader

List of usage examples for org.apache.lucene.search IndexSearcher getIndexReader

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Introduction

In this page you can find the example usage for org.apache.lucene.search IndexSearcher getIndexReader.

Prototype

public IndexReader getIndexReader()

Source Link

Document

Return the IndexReader this searches.

Usage

From source file:com.leavesfly.lia.tool.HighlightTest.java

License:Apache License

public void testHits() throws Exception {
    IndexSearcher searcher = new IndexSearcher(TestUtil.getBookIndexDirectory());
    TermQuery query = new TermQuery(new Term("title", "action"));
    TopDocs hits = searcher.search(query, 10);

    QueryScorer scorer = new QueryScorer(query, "title");
    Highlighter highlighter = new Highlighter(scorer);
    highlighter.setTextFragmenter(new SimpleSpanFragmenter(scorer));

    Analyzer analyzer = new SimpleAnalyzer();

    for (ScoreDoc sd : hits.scoreDocs) {
        Document doc = searcher.doc(sd.doc);
        String title = doc.get("title");

        TokenStream stream = TokenSources.getAnyTokenStream(searcher.getIndexReader(), sd.doc, "title", doc,
                analyzer);/*from  w ww  .  j av a  2 s  .c o  m*/
        String fragment = highlighter.getBestFragment(stream, title);

        System.out.println(fragment);
    }
}

From source file:com.m3958.apps.pcms.lucene.facet.MultiCategoryListsFacetsExample.java

License:Apache License

/** User runs a query and counts facets. */
private List<FacetResult> search() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);

    // Count both "Publish Date" and "Author" dimensions
    FacetSearchParams fsp = new FacetSearchParams(indexingParams,
            new CountFacetRequest(new CategoryPath("Publish Date"), 10),
            new CountFacetRequest(new CategoryPath("Author"), 10));

    // Aggregatses the facet counts
    FacetsCollector fc = FacetsCollector.create(fsp, searcher.getIndexReader(), taxoReader);

    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query, and use MultiCollector to
    // wrap collecting the "normal" hits and also facets:
    searcher.search(new MatchAllDocsQuery(), fc);

    // Retrieve results
    List<FacetResult> facetResults = fc.getFacetResults();

    indexReader.close();//from   ww w  .  j  a va2  s.  co m
    taxoReader.close();

    return facetResults;
}

From source file:com.m3958.apps.pcms.lucene.facet.SimpleFacetsExample.java

License:Apache License

/** User runs a query and counts facets. */
private List<FacetResult> search() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);

    // Count both "Publish Date" and "Author" dimensions
    FacetSearchParams fsp = new FacetSearchParams(new CountFacetRequest(new CategoryPath("Publish Date"), 10),
            new CountFacetRequest(new CategoryPath("Author"), 10));

    // Aggregates the facet counts
    FacetsCollector fc = FacetsCollector.create(fsp, searcher.getIndexReader(), taxoReader);

    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query, and use MultiCollector to
    // wrap collecting the "normal" hits and also facets:
    searcher.search(new MatchAllDocsQuery(), fc);

    // Retrieve results
    List<FacetResult> facetResults = fc.getFacetResults();

    indexReader.close();//from w ww.ja  v  a  2  s .c  om
    taxoReader.close();

    return facetResults;
}

From source file:com.m3958.apps.pcms.lucene.facet.SimpleFacetsExample.java

License:Apache License

/** User drills down on 'Publish Date/2010'. */
private List<FacetResult> drillDown() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);

    // Now user drills down on Publish Date/2010:
    FacetSearchParams fsp = new FacetSearchParams(new CountFacetRequest(new CategoryPath("Author"), 10));

    // Passing no baseQuery means we drill down on all
    // documents ("browse only"):
    DrillDownQuery q = new DrillDownQuery(fsp.indexingParams);
    q.add(new CategoryPath("Publish Date/2010", '/'));
    FacetsCollector fc = FacetsCollector.create(fsp, searcher.getIndexReader(), taxoReader);
    searcher.search(q, fc);/*from ww  w.ja va2 s . co  m*/

    // Retrieve results
    List<FacetResult> facetResults = fc.getFacetResults();

    indexReader.close();
    taxoReader.close();

    return facetResults;
}

From source file:com.mathworks.xzheng.indexing.IndexingTest.java

License:Apache License

protected int getHitCount(String fieldName, String searchString) throws IOException {
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(directory)); //4
    Term t = new Term(fieldName, searchString);
    Query query = new TermQuery(t); //5
    int hitCount = TestUtil.hitCount(searcher, query); //6
    searcher.getIndexReader().close();
    return hitCount;
}

From source file:com.mathworks.xzheng.meetlucene.Searcher.java

License:Apache License

public static void search(String indexDir, String q) throws IOException, ParseException {

    Directory dir = FSDirectory.open(new File(indexDir)); //3
    IndexSearcher is = new IndexSearcher(DirectoryReader.open(dir)); //3

    QueryParser parser = new QueryParser(Version.LUCENE_46, // 4
            "contents", //4
            new StandardAnalyzer( //4
                    Version.LUCENE_46)); //4
    Query query = parser.parse(q); //4
    long start = System.currentTimeMillis();
    TopDocs hits = is.search(query, 10); //5
    long end = System.currentTimeMillis();

    System.err.println("Found " + hits.totalHits + //6
            " document(s) (in " + (end - start) + // 6
            " milliseconds) that matched query '" + // 6
            q + "':"); // 6

    for (ScoreDoc scoreDoc : hits.scoreDocs) {
        Document doc = is.doc(scoreDoc.doc); //7
        System.out.println(doc.get("fullpath")); //8
    }//from  www. j  av a2  s  .c o m

    is.getIndexReader().close(); //9
}

From source file:com.mathworks.xzheng.tools.FastVectorHighlighterSample.java

License:Apache License

static void searchIndex(String filename) throws Exception {
    QueryParser parser = new QueryParser(Version.LUCENE_46, F, analyzer);
    Query query = parser.parse(QUERY);
    FastVectorHighlighter highlighter = getHighlighter(); // #C
    FieldQuery fieldQuery = highlighter.getFieldQuery(query); // #D
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(dir));
    TopDocs docs = searcher.search(query, 10);

    FileWriter writer = new FileWriter(filename);
    writer.write("<html>");
    writer.write("<body>");
    writer.write("<p>QUERY : " + QUERY + "</p>");
    for (ScoreDoc scoreDoc : docs.scoreDocs) {
        String snippet = highlighter.getBestFragment( // #E
                fieldQuery, searcher.getIndexReader(), // #E
                scoreDoc.doc, F, 100); // #E
        if (snippet != null) {
            writer.write(scoreDoc.doc + " : " + snippet + "<br/>");
        }// w  ww .j  ava  2  s.c  o  m
    }
    writer.write("</body></html>");
    writer.close();

}

From source file:com.mathworks.xzheng.tools.HighlightTest.java

License:Apache License

public void testHits() throws Exception {
    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(TestUtil.getBookIndexDirectory()));
    TermQuery query = new TermQuery(new Term("title", "action"));
    TopDocs hits = searcher.search(query, 10);

    QueryScorer scorer = new QueryScorer(query, "title");
    Highlighter highlighter = new Highlighter(scorer);
    highlighter.setTextFragmenter(new SimpleSpanFragmenter(scorer));

    Analyzer analyzer = new SimpleAnalyzer(Version.LUCENE_46);

    for (ScoreDoc sd : hits.scoreDocs) {
        Document doc = searcher.doc(sd.doc);
        String title = doc.get("title");

        TokenStream stream = TokenSources.getAnyTokenStream(searcher.getIndexReader(), sd.doc, "title", doc,
                analyzer);/*from   www  . j  a  v  a  2s.co m*/
        String fragment = highlighter.getBestFragment(stream, title);

        System.out.println(fragment);
    }
}

From source file:com.nearinfinity.blur.manager.writer.nrt.SearcherManager.java

License:Apache License

/**
 * Returns <code>true</code> if no changes have occured since this searcher
 * ie. reader was opened, otherwise <code>false</code>.
 * //from   ww w  .  j a v a 2 s . c om
 * @see IndexReader#isCurrent()
 */
public boolean isSearcherCurrent() throws CorruptIndexException, IOException {
    final IndexSearcher searcher = acquire();
    try {
        return searcher.getIndexReader().isCurrent();
    } finally {
        release(searcher);
    }
}

From source file:com.nearinfinity.blur.manager.writer.nrt.SearcherManager.java

License:Apache License

/**
 * Release the searcher previously obtained with {@link #acquire}.
 * /* w ww.  ja  v  a2s  .com*/
 * <p>
 * <b>NOTE</b>: it's safe to call this after {@link #close}.
 */
public void release(IndexSearcher searcher) throws IOException {
    assert searcher != null;
    searcher.getIndexReader().decRef();
}