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

Introduction

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

Prototype

public IndexSearcher(IndexReaderContext context) 

Source Link

Document

Creates a searcher searching the provided top-level IndexReaderContext .

Usage

From source file:com.leavesfly.lia.advsearching.MultiSearcherTest.java

License:Apache License

public void setUp() throws Exception {
    String[] animals = { "aardvark", "beaver", "coati", "dog", "elephant", "frog", "gila monster", "horse",
            "iguana", "javelina", "kangaroo", "lemur", "moose", "nematode", "orca", "python", "quokka", "rat",
            "scorpion", "tarantula", "uromastyx", "vicuna", "walrus", "xiphias", "yak", "zebra" };

    Analyzer analyzer = new WhitespaceAnalyzer();

    Directory aTOmDirectory = new RAMDirectory(); // #1
    Directory nTOzDirectory = new RAMDirectory(); // #1

    IndexWriter aTOmWriter = new IndexWriter(aTOmDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);
    IndexWriter nTOzWriter = new IndexWriter(nTOzDirectory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);

    for (int i = animals.length - 1; i >= 0; i--) {
        Document doc = new Document();
        String animal = animals[i];
        doc.add(new Field("animal", animal, Field.Store.YES, Field.Index.NOT_ANALYZED));
        if (animal.charAt(0) < 'n') {
            aTOmWriter.addDocument(doc); // #2
        } else {//from  w  ww . j  av a 2s.co m
            nTOzWriter.addDocument(doc); // #2
        }
    }

    aTOmWriter.close();
    nTOzWriter.close();

    searchers = new IndexSearcher[2];
    searchers[0] = new IndexSearcher(aTOmDirectory);
    searchers[1] = new IndexSearcher(nTOzDirectory);
}

---

From source file:com.leavesfly.lia.advsearching.SecurityFilterTest.java

License:Apache License

protected void setUp() throws Exception {
    Directory directory = new RAMDirectory();
    IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(),
            IndexWriter.MaxFieldLength.UNLIMITED);

    Document document = new Document(); // 1
    document.add(new Field("owner", // 1
            "elwood", // 1
            Field.Store.YES, // 1
            Field.Index.NOT_ANALYZED)); // 1
    document.add(new Field("keywords", // 1
            "elwood's sensitive info", // 1
            Field.Store.YES, // 1
            Field.Index.ANALYZED)); // 1
    writer.addDocument(document);/*w  w  w . ja va 2  s.com*/

    document = new Document(); // 2
    document.add(new Field("owner", // 2
            "jake", // 2
            Field.Store.YES, // 2
            Field.Index.NOT_ANALYZED)); // 2
    document.add(new Field("keywords", // 2
            "jake's sensitive info", // 2
            Field.Store.YES, // 2
            Field.Index.ANALYZED)); // 2
    writer.addDocument(document);

    writer.close();
    searcher = new IndexSearcher(directory);
}

---

From source file:com.leavesfly.lia.advsearching.SortingExample.java

License:Apache License

public void displayResults(Query query, Sort sort) // #1
        throws IOException {
    IndexSearcher searcher = new IndexSearcher(directory);

    searcher.setDefaultFieldSortScoring(true, false); // #2

    TopDocs results = searcher.search(query, null, // #3
            20, sort); // #3

    System.out.println("\nResults for: " + // #4
            query.toString() + " sorted by " + sort);

    System.out.println(StringUtils.rightPad("Title", 30) + StringUtils.rightPad("pubmonth", 10)
            + StringUtils.center("id", 4) + StringUtils.center("score", 15));

    PrintStream out = new PrintStream(System.out, true, "UTF-8"); // #5

    DecimalFormat scoreFormatter = new DecimalFormat("0.######");
    for (ScoreDoc sd : results.scoreDocs) {
        int docID = sd.doc;
        float score = sd.score;
        Document doc = searcher.doc(docID);
        out.println(StringUtils.rightPad( // #6
                StringUtils.abbreviate(doc.get("title"), 29), 30) + // #6
                StringUtils.rightPad(doc.get("pubmonth"), 10) + // #6
                StringUtils.center("" + docID, 4) + // #6
                StringUtils.leftPad( // #6
                        scoreFormatter.format(score), 12)); // #6
        out.println("   " + doc.get("category"));
        // out.println(searcher.explain(query, docID)); // #7
    }//ww  w .  ja v a 2  s.  co  m

    searcher.close();
}

---

From source file:com.leavesfly.lia.advsearching.SpanQueryTest.java

License:Apache License

protected void setUp() throws Exception {
    directory = new RAMDirectory();

    analyzer = new WhitespaceAnalyzer();
    IndexWriter writer = new IndexWriter(directory, analyzer, IndexWriter.MaxFieldLength.UNLIMITED);

    Document doc = new Document();
    doc.add(new Field("f", "the quick brown fox jumps over the lazy dog", Field.Store.YES,
            Field.Index.ANALYZED));
    writer.addDocument(doc);//  w ww. ja  v  a2s.c  o  m

    doc = new Document();
    doc.add(new Field("f", "the quick red fox jumps over the sleepy cat", Field.Store.YES,
            Field.Index.ANALYZED));
    writer.addDocument(doc);

    writer.close();

    searcher = new IndexSearcher(directory);
    reader = searcher.getIndexReader();

    quick = new SpanTermQuery(new Term("f", "quick"));
    brown = new SpanTermQuery(new Term("f", "brown"));
    red = new SpanTermQuery(new Term("f", "red"));
    fox = new SpanTermQuery(new Term("f", "fox"));
    lazy = new SpanTermQuery(new Term("f", "lazy"));
    sleepy = new SpanTermQuery(new Term("f", "sleepy"));
    dog = new SpanTermQuery(new Term("f", "dog"));
    cat = new SpanTermQuery(new Term("f", "cat"));
}

---

From source file:com.leavesfly.lia.advsearching.TimeLimitingCollectorTest.java

License:Apache License

public void testTimeLimitingCollector() throws Exception {
    Directory dir = TestUtil.getBookIndexDirectory();
    IndexSearcher searcher = new IndexSearcher(dir);
    Query q = new MatchAllDocsQuery();
    int numAllBooks = TestUtil.hitCount(searcher, q);

    TopScoreDocCollector topDocs = TopScoreDocCollector.create(10, false);
    Collector collector = new TimeLimitingCollector(topDocs, // #A
            1000); // #A
    try {//from w  w  w  .  j  a v a 2 s .  co  m
        searcher.search(q, collector);
        assertEquals(numAllBooks, topDocs.getTotalHits()); // #B
    } catch (TimeExceededException tee) { // #C
        System.out.println("Too much time taken."); // #C
    } // #C
    searcher.close();
    dir.close();
}

---

From source file:com.leavesfly.lia.analysis.keyword.KeywordAnalyzerTest.java

License:Apache License

public void setUp() throws Exception {
    Directory directory = new RAMDirectory();

    IndexWriter writer = new IndexWriter(directory, new SimpleAnalyzer(), IndexWriter.MaxFieldLength.UNLIMITED);

    Document doc = new Document();
    doc.add(new Field("partnum", "Q36", Field.Store.NO, Field.Index.NOT_ANALYZED_NO_NORMS)); // A
    doc.add(new Field("description", "Illidium Space Modulator", Field.Store.YES, Field.Index.ANALYZED));
    writer.addDocument(doc);//from www. j  a  v  a  2 s .co  m

    writer.close();

    searcher = new IndexSearcher(directory);
}

---

From source file:com.leavesfly.lia.extsearch.payloads.PayloadsTest.java

License:Apache License

public void testPayloadTermQuery() throws Throwable {
    addDoc("Hurricane warning",
            "Bulletin: A hurricane warning was issued at " + "6 AM for the outer great banks");
    addDoc("Warning label maker", "The warning label maker is a delightful toy for "
            + "your precocious seven year old's warning needs");
    addDoc("Tornado warning",
            "Bulletin: There is a tornado warning for " + "Worcester county until 6 PM today");

    IndexReader r = writer.getReader();//from  www .jav a2 s.c o m
    writer.close();

    IndexSearcher searcher = new IndexSearcher(r);

    searcher.setSimilarity(new BoostingSimilarity());

    Term warning = new Term("contents", "warning");

    Query query1 = new TermQuery(warning);
    System.out.println("\nTermQuery results:");
    TopDocs hits = searcher.search(query1, 10);
    TestUtil.dumpHits(searcher, hits);

    assertEquals("Warning label maker", // #B
            searcher.doc(hits.scoreDocs[0].doc).get("title")); // #B

    Query query2 = new PayloadTermQuery(warning, new AveragePayloadFunction());
    System.out.println("\nPayloadTermQuery results:");
    hits = searcher.search(query2, 10);
    TestUtil.dumpHits(searcher, hits);

    assertEquals("Warning label maker", // #C
            searcher.doc(hits.scoreDocs[2].doc).get("title")); // #C
    r.close();
    searcher.close();
}

---

From source file:com.leavesfly.lia.extsearch.sorting.DistanceSortingTest.java

License:Apache License

protected void setUp() throws Exception {
    directory = new RAMDirectory();
    IndexWriter writer = new IndexWriter(directory, new WhitespaceAnalyzer(),
            IndexWriter.MaxFieldLength.UNLIMITED);
    addPoint(writer, "El Charro", "restaurant", 1, 2);
    addPoint(writer, "Cafe Poca Cosa", "restaurant", 5, 9);
    addPoint(writer, "Los Betos", "restaurant", 9, 6);
    addPoint(writer, "Nico's Taco Shop", "restaurant", 3, 8);

    writer.close();/* w w w.  ja va 2 s  . c  o  m*/

    searcher = new IndexSearcher(directory);

    query = new TermQuery(new Term("type", "restaurant"));
}

---

From source file:com.leavesfly.lia.meetlucene.Fragments.java

License:Apache License

public void simpleSearch() throws IOException {
    Directory dir = FSDirectory.open(new File("/tmp/index"));
    IndexSearcher searcher = new IndexSearcher(dir);
    Query q = new TermQuery(new Term("contents", "lucene"));
    TopDocs hits = searcher.search(q, 10);
    searcher.close();/*from w  w w  .j ava  2  s  .c o m*/
}

---

From source file:com.leavesfly.lia.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(dir); //3   

    QueryParser parser = new QueryParser(Version.LUCENE_30, // 4
            "contents", //4
            new StandardAnalyzer( //4
                    Version.LUCENE_30)); //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  ww w .  j  a v a 2 s.  c o m

    is.close(); //9
}

---

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