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

Introduction

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

Prototype

protected void search(List<LeafReaderContext> leaves, Weight weight, Collector collector) throws IOException 

Source Link

Document

Lower-level search API.

Usage

From source file:com.cohesionforce.search.EMFIndex.java

License:Open Source License

/**
 * Finds a document matching the object and returns the query used
 * /*from   w w  w .j  av  a  2s .c  o  m*/
 * @param object
 *            to search for in the index
 * @return the query that returns the document
 * @throws IllegalArgumentException
 *             if the object is null
 * @throws IOException
 *             if there are problems searching the index
 */
protected Query findDocument(EObject object) throws IllegalArgumentException, IOException {

    if (object == null) {
        throw new IllegalArgumentException("EObject cannot be null");
    }

    Query rvalue = null;

    DirectoryReader reader = DirectoryReader.open(fsDir);
    IndexSearcher searcher = new IndexSearcher(reader);
    try {

        BooleanQuery bquery = new BooleanQuery();

        TermQuery classQuery = new TermQuery(new Term(EMFIndexUtil.ETYPE_KEY, object.eClass().getName()));
        bquery.add(classQuery, Occur.MUST);

        TermQuery uriQuery = new TermQuery(
                new Term(EMFIndexUtil.DOCUMENT_URI_KEY, object.eResource().getURI().toString()));
        bquery.add(uriQuery, Occur.MUST);

        TermQuery fragmentQuery = new TermQuery(
                new Term(EMFIndexUtil.FRAGMENT_URI_KEY, object.eResource().getURIFragment(object)));
        bquery.add(fragmentQuery, Occur.MUST);

        ScoreDoc[] hits = searcher.search(bquery, null, 1).scoreDocs;
        // Iterate through the results:
        if (hits.length > 0) {
            rvalue = bquery;
        }
    } finally {
        reader.close();
    }
    return rvalue;
}

---

From source file:com.cohesionforce.search.EMFIndex.java

License:Open Source License

/**
 * Deletes a document matching the EObject
 * //from w  ww .j a  v a2 s .  co  m
 * @param obj
 * @throws IllegalArgumentException
 *             if EObject is null or the EObject is not contained in a
 *             resource
 * @throws IOException
 *             if there are issues saving the index
 */
public void deleteDocument(EObject obj) throws IllegalArgumentException, IOException {
    if (obj == null) {
        throw new IllegalArgumentException("EObject cannot be null");
    }
    if (obj.eResource() == null) {
        throw new IllegalArgumentException("EObject must be contained in a Resource");
    }

    Query query = findDocument(obj);
    if (query != null) {
        logger.debug("Deleting existing index for {}:{}", obj.eResource().getURI(),
                obj.eResource().getURIFragment(obj));
        writer.deleteDocuments(query);
        if (!holdCommits) {
            writer.commit();
        }
    }

    DirectoryReader reader = DirectoryReader.open(fsDir);

    ArrayList<String> names = new ArrayList<String>();
    for (AtomicReaderContext context : reader.leaves()) {
        for (FieldInfo fi : context.reader().getFieldInfos()) {
            if (!names.contains(fi.name)) {
                names.add(fi.name);
            }

        }
    }
    if (names.size() > 0) {
        MultiFieldQueryParser parser = new MultiFieldQueryParser(version, names.toArray(new String[] {}),
                analyzer);
        try {
            query = parser.parse(obj.eResource().getURIFragment(obj));
            IndexSearcher searcher = new IndexSearcher(reader);

            ScoreDoc[] hits = searcher.search(query, null, MAX_SEARCH_RESULT).scoreDocs;
            for (ScoreDoc hit : hits) {
                Document hitDoc = searcher.doc(hit.doc);
                logger.debug("Hanging reference in: {}",
                        hitDoc.getField(EMFIndexUtil.DOCUMENT_URI_KEY).stringValue());
            }
        } catch (ParseException e) {
            logger.error(e.getMessage());
        }

    }
}

---

From source file:com.cohesionforce.search.EMFIndex.java

License:Open Source License

/**
 * Deletes a document matching the URI//from w  w w . ja  v  a2s. c om
 * 
 * @param uri - the URI of the object reference to delete
 * @throws IllegalArgumentException
 *             if the uri is null
 * @throws IOException
 *             if there are issues saving the index
 */
public void deleteDocument(URI uri) throws IllegalArgumentException, IOException {
    if (uri == null) {
        throw new IllegalArgumentException("URI cannot be null");
    }

    DirectoryReader reader = DirectoryReader.open(fsDir);
    IndexSearcher searcher = new IndexSearcher(reader);
    try {

        TermQuery uriQuery = new TermQuery(new Term(EMFIndexUtil.DOCUMENT_URI_KEY, uri.toString()));

        ScoreDoc[] hits = searcher.search(uriQuery, null, 1).scoreDocs;
        // Iterate through the results:
        if (hits.length > 0) {
            writer.deleteDocuments(uriQuery);
            if (!holdCommits) {
                writer.commit();
            }
        }
    } finally {
        reader.close();
    }
}

---

From source file:com.daniel.SearchFiles.java

License:Apache License

/** Simple command-line based search demo. */
public static void main(String[] args) throws Exception {
    String usage = "Usage:\tjava org.apache.lucene.demo.SearchFiles [-index dir] [-field f] [-repeat n] [-queries file] [-query string] [-raw] [-paging hitsPerPage]\n\nSee http://lucene.che.org/java/4_0/demo.html for details.";
    if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) {
        System.out.println(usage);
        System.exit(0);//from   w w w  .j  a va2 s.  c om
    }

    String index = "index";
    String field = "contents";
    String queries = null;
    int repeat = 0;
    boolean raw = false;
    String queryString = null;
    int hitsPerPage = 10;

    for (int i = 0; i < args.length; i++) {
        if ("-index".equals(args[i])) {
            index = args[i + 1];
            i++;
        } else if ("-field".equals(args[i])) {
            field = args[i + 1];
            i++;
        } else if ("-queries".equals(args[i])) {
            queries = args[i + 1];
            i++;
        } else if ("-query".equals(args[i])) {
            queryString = args[i + 1];
            i++;
        } else if ("-repeat".equals(args[i])) {
            repeat = Integer.parseInt(args[i + 1]);
            i++;
        } else if ("-raw".equals(args[i])) {
            raw = true;
        } else if ("-paging".equals(args[i])) {
            hitsPerPage = Integer.parseInt(args[i + 1]);
            if (hitsPerPage <= 0) {
                System.err.println("There must be at least 1 hit per page.");
                System.exit(1);
            }
            i++;
        }
    }

    IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(index)));
    IndexSearcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_40);

    BufferedReader in = null;
    if (queries != null) {
        in = new BufferedReader(new InputStreamReader(new FileInputStream(queries), "UTF-8"));
    } else {
        in = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));
    }
    QueryParser parser = new QueryParser(Version.LUCENE_40, field, analyzer);
    while (true) {
        if (queries == null && queryString == null) { // prompt the user
            System.out.println("Enter query: ");
        }

        String line = queryString != null ? queryString : in.readLine();

        if (line == null || line.length() == -1) {
            break;
        }

        line = line.trim();
        if (line.length() == 0) {
            break;
        }

        Query query = parser.parse(line);
        System.out.println("Searching for: " + query.toString(field));

        if (repeat > 0) { // repeat & time as benchmark
            Date start = new Date();
            for (int i = 0; i < repeat; i++) {
                searcher.search(query, null, 100);
            }
            Date end = new Date();
            System.out.println("Time: " + (end.getTime() - start.getTime()) + "ms");
        }

        doPagingSearch(in, searcher, query, hitsPerPage, raw, queries == null && queryString == null);

        if (queryString != null) {
            break;
        }
    }
    reader.close();
}

---

From source file:com.devb.search.IndicSearcher.java

License:Apache License

private void callSearch(boolean j) {
    System.out.println("Servlet Ctx " + servletContext.getRealPath("/"));
    String indexPath = servletContext.getRealPath("/") + "/hindex/";
    String docsPath = servletContext.getRealPath("/") + "/hdocs/";

    final File docDir = new File(docsPath);
    if (!docDir.exists() || !docDir.canRead()) {
        System.out.println("Document directory '" + docDir.getAbsolutePath()
                + "' does not exist or is not readable, " + "please check the path\n");
        return;//from   w  ww. ja va  2 s.  c om
    }

    IndexReader reader = null;
    IndexSearcher searcher = null;
    Analyzer analyzer = null;
    String field = "contents";

    try {
        reader = DirectoryReader.open(FSDirectory.open(new File(indexPath)));
        searcher = new IndexSearcher(reader);
        analyzer = new HindiAnalyzer();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    }

    QueryParser parser = new QueryParser(field, analyzer);
    String /*ByteBuffer*/ line = null;
    Query query = null;

    try {
        // line = Charset.forName("UTF-8").encode(this.id);
        line = this.id;

        // line = line.trim();
        if (line == null) {
            return;
        }
        System.out.println("Hindi StandardSearcher / callSearch Line " + line);
        query = parser.parse(line);
        System.out.println("Hindi StandardSearcher / callSearch Hindi Query " + query);
        final int maxHits = 10;
        ScoreDoc[] hits = searcher.search(query, null, maxHits).scoreDocs;
        try {
            // Iterate through the results:
            for (int i = 0; i < hits.length; i++) {
                Document hitDoc = searcher.doc(hits[i].doc);

                if (j) {
                    JSONObject jo = new JSONObject();
                    jo.put("query", query.toString(field));
                    jo.put("path", hitDoc.get("path"));
                    jo.put("line", hitDoc.get("linenumber"));
                    jo.put("contents", hitDoc.get("contents"));

                    ja.put(jo);
                } else {
                    SearchResult ns = new SearchResult();
                    ns.setQuery(query.toString(field));
                    ns.setDocPath(hitDoc.get("path"));
                    ns.setLineNum(hitDoc.get("linenumber"));
                    ns.setContents(hitDoc.get("contents"));
                    contentProvider.put(String.valueOf(i), ns);
                }
            }
        } catch (Exception ito) {
            ito.printStackTrace();
        }

    } catch (Exception ex) {
        ex.printStackTrace();
    }
    try {
        reader.close();
    } catch (IOException ioe) {

    }
}

---

From source file:com.devb.search.StandardSearcher.java

License:Apache License

private void callSearch(boolean j) {
    System.out.println("Servlet Ctx " + servletContext.getRealPath("/"));
    String indexPath = servletContext.getRealPath("/") + "/index/";
    String docsPath = servletContext.getRealPath("/") + "/docs/";

    final File docDir = new File(docsPath);
    if (!docDir.exists() || !docDir.canRead()) {
        System.out.println("Document directory '" + docDir.getAbsolutePath()
                + "' does not exist or is not readable, " + "please check the path\n");
        return;//from  www  . ja va  2 s .com
    }

    IndexReader reader = null;
    IndexSearcher searcher = null;
    Analyzer analyzer = null;
    String field = "contents";

    try {
        reader = DirectoryReader.open(FSDirectory.open(new File(indexPath)));
        searcher = new IndexSearcher(reader);
        analyzer = new StandardAnalyzer();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    }

    QueryParser parser = new QueryParser(field, analyzer);
    String line = null;
    Query query = null;

    try {
        line = this.id;

        line = line.trim();
        if (line.length() == 0) {
            return;
        }
        query = parser.parse(line);
        final int maxHits = 10;
        ScoreDoc[] hits = searcher.search(query, null, maxHits).scoreDocs;
        try {
            // Iterate through the results:
            for (int i = 0; i < hits.length; i++) {
                Document hitDoc = searcher.doc(hits[i].doc);

                if (j) {
                    JSONObject jo = new JSONObject();
                    jo.put("query", query.toString(field));
                    jo.put("path", hitDoc.get("path"));
                    jo.put("line", hitDoc.get("linenumber"));
                    jo.put("contents", hitDoc.get("contents"));

                    ja.put(jo);
                } else {
                    SearchResult ns = new SearchResult();
                    ns.setQuery(query.toString(field));
                    ns.setDocPath(hitDoc.get("path"));
                    ns.setLineNum(hitDoc.get("linenumber"));
                    ns.setContents(hitDoc.get("contents"));
                    contents.put(String.valueOf(i), ns);
                }
            }
        } catch (Exception ito) {
            ito.printStackTrace();
        }

    } catch (Exception ex) {
        ex.printStackTrace();
    }
    try {
        reader.close();
    } catch (IOException ioe) {

    }
}

---

From source file:com.eden.lucene.SearchFiles.java

License:Apache License

/** Simple command-line based search demo. */
public static void main(String[] args) throws Exception {
    String usage = "Usage:\tjava org.apache.lucene.demo.SearchFiles [-index dir] [-field f] [-repeat n] [-queries file] [-query string] [-raw] [-paging hitsPerPage]\n\nSee http://lucene.apache.org/core/4_1_0/demo/ for details.";
    if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) {
        System.out.println(usage);
        System.exit(0);/*from  w w  w.  j a v a2s .  c o m*/
    }

    String basePath = "D:/test/lucene";

    String index = basePath + "/index";
    String field = "contents";
    String queries = null;
    int repeat = 0;
    boolean raw = false;
    String queryString = null;
    int hitsPerPage = 10;

    /*  for(int i = 0;i < args.length;i++) {
        if ("-index".equals(args[i])) {
          index = args[i+1];
          i++;
        } else if ("-field".equals(args[i])) {
          field = args[i+1];
          i++;
        } else if ("-queries".equals(args[i])) {
          queries = args[i+1];
          i++;
        } else if ("-query".equals(args[i])) {
          queryString = args[i+1];
          i++;
        } else if ("-repeat".equals(args[i])) {
          repeat = Integer.parseInt(args[i+1]);
          i++;
        } else if ("-raw".equals(args[i])) {
          raw = true;
        } else if ("-paging".equals(args[i])) {
          hitsPerPage = Integer.parseInt(args[i+1]);
          if (hitsPerPage <= 0) {
            System.err.println("There must be at least 1 hit per page.");
            System.exit(1);
          }
          i++;
        }
      }*/

    IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(index)));
    IndexSearcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_46);

    BufferedReader in = null;
    if (queries != null) {
        in = new BufferedReader(new InputStreamReader(new FileInputStream(queries), "UTF-8"));
    } else {
        in = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));
    }
    QueryParser parser = new QueryParser(Version.LUCENE_46, field, analyzer);
    while (true) {
        if (queries == null && queryString == null) { // prompt the user
            System.out.println("Enter query: ");
        }

        String line = queryString != null ? queryString : in.readLine();

        if (line == null || line.length() == -1) {
            break;
        }

        line = line.trim();
        if (line.length() == 0) {
            break;
        }

        Query query = parser.parse(line);
        System.out.println("Searching for: " + query.toString(field));

        if (repeat > 0) { // repeat & time as benchmark
            Date start = new Date();
            for (int i = 0; i < repeat; i++) {
                searcher.search(query, null, 100);
            }
            Date end = new Date();
            System.out.println("Time: " + (end.getTime() - start.getTime()) + "ms");
        }

        doPagingSearch(in, searcher, query, hitsPerPage, raw, queries == null && queryString == null);

        if (queryString != null) {
            break;
        }
    }
    reader.close();
}

---

From source file:com.evoapps.lucene.SearchFiles.java

License:Apache License

/** Simple command-line based search demo. */
public ArrayList<Publication> search(String queryTerm) throws Exception {

    list.clear();//  w w  w  .j  av  a  2 s  .c o  m
    String usage = "Usage:\tjava org.apache.lucene.demo.SearchFiles [-index dir] [-field f] [-repeat n] [-queries file] [-query string] [-raw] [-paging hitsPerPage]\n\nSee http://lucene.apache.org/core/4_1_0/demo/ for details.";
    /* if (args.length > 0 && ("-h".equals(args[0]) || "-help".equals(args[0]))) {
       System.out.println(usage);
       System.exit(0);
     }*/

    String index = "index";
    String field = "contents";
    //   String field = "Abstract";
    String queries = null;
    int repeat = 0;
    boolean raw = false;
    String queryString = queryTerm;
    int hitsPerPage = 20;

    /*for(int i = 0;i < args.length;i++) {
      if ("-index".equals(args[i])) {
        index = args[i+1];
        i++;
      } else if ("-field".equals(args[i])) {
        field = args[i+1];
        i++;
      } else if ("-queries".equals(args[i])) {
        queries = args[i+1];
        i++;
      } else if ("-query".equals(args[i])) {
        queryString = args[i+1];
        i++;
      } else if ("-repeat".equals(args[i])) {
        repeat = Integer.parseInt(args[i+1]);
        i++;
      } else if ("-raw".equals(args[i])) {
        raw = true;
      } else if ("-paging".equals(args[i])) {
        hitsPerPage = Integer.parseInt(args[i+1]);
        if (hitsPerPage <= 0) {
          System.err.println("There must be at least 1 hit per page.");
          System.exit(1);
        }
        i++;
      }
    }
    */
    // index = "/home/subhash/LuceneFolder/Indexer";
    index = "/home/subhash/Dropbox/LuceneFolder/IndexNewData";

    IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(index)));
    IndexSearcher searcher = new IndexSearcher(reader);
    Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_40);

    BufferedReader in = null;
    if (queries != null) {
        in = new BufferedReader(new InputStreamReader(new FileInputStream(queries), "UTF-8"));
    } else {
        in = new BufferedReader(new InputStreamReader(System.in, "UTF-8"));
    }
    QueryParser parser = new QueryParser(Version.LUCENE_40, field, analyzer);
    while (true) {
        if (queries == null && queryString == null) { // prompt the user
            System.out.println("Enter query: ");
        }

        String line = queryString != null ? queryString : in.readLine();

        if (line == null || line.length() == -1) {
            break;
        }

        line = line.trim();
        if (line.length() == 0) {
            break;
        }

        Query query = parser.parse(line);
        System.out.println("Searching for: " + query.toString(field));

        if (repeat > 0) { // repeat & time as benchmark
            Date start = new Date();
            for (int i = 0; i < repeat; i++) {
                searcher.search(query, null, 100);
            }
            Date end = new Date();
            System.out.println("Time: " + (end.getTime() - start.getTime()) + "ms");
        }

        ArrayList<Publication> list = doPagingSearch(in, searcher, query, hitsPerPage, raw,
                queries == null && queryString == null);

        if (queryString != null) {
            break;
        }
    }
    reader.close();

    return list;
}

---

From source file:com.example.search.SearchFiles.java

License:Apache License

public static ArrayList<SearchResult> find(String input, int startPage) throws Exception {
    //String index = ".\\WebContent\\index";//D:\Users\admin\workspace\TestJsp\WebContent\index
    String index = "./index";
    //   System.out.println("index:"+index);
    String field = "content";
    String queries = null;/*  w  w w.j av a2s  .  c o m*/
    int repeat = 0;
    boolean raw = false;
    String queryString = null;
    int hitsPerPage = HitsPerPage;
    IndexReader reader = IndexReader.open(FSDirectory.open(new File(index)));
    IndexSearcher searcher = new IndexSearcher(reader);
    // Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_31);
    Analyzer analyzer = new ICTCLASAnalyzer();
    BufferedReader in = null;
    // in = new BufferedReader(input);
    int pos;
    ArrayList<SearchResult> result = new ArrayList<SearchResult>();
    if (((pos = input.indexOf('\r')) != -1) || (pos = input.indexOf('\n')) != -1)
        input = input.substring(0, pos);
    QueryParser parser = new QueryParser(Version.LUCENE_31, field, analyzer);
    // while (true) {
    // if (queries == null && queryString == null) { // prompt the user
    // System.out.println("Enter query: ");
    // }
    String line = queryString != null ? queryString : input;
    if (line == null || line.length() == -1) {
        searcher.close();
        reader.close();
        return result;
    }

    line = line.trim();
    if (line.length() == 0) {
        searcher.close();
        reader.close();
        return result;
    }

    Query query = parser.parse(line);
    System.out.println("Searching for: " + query.toString(field));

    if (repeat > 0) { // repeat & time as benchmark
        Date start = new Date();
        for (int i = 0; i < repeat; i++) {
            searcher.search(query, null, 100);
        }
        Date end = new Date();
        System.out.println("Time: " + (end.getTime() - start.getTime()) + "ms");
    }

    doPagingSearch(in, searcher, query, hitsPerPage, raw, queries == null && queryString == null, result,
            startPage);
    searcher.close();
    reader.close();
    return result;
}

---

From source file:com.flaptor.hounder.indexer.LuceneUnicodeTest.java

License:Apache License

@TestInfo(testType = TestInfo.TestType.UNIT)
public void testIndexedContent() {
    try {//from  ww  w .j  a v  a  2  s  .  c om
        String testString = "otorrinolaring\u00f3logo";
        logger.debug("Using test string: " + testString);
        Document doc = new Document();
        doc.add(new Field("field1", testString, Field.Store.YES, Field.Index.ANALYZED));
        writer.addDocument(doc);
        writer.optimize();
        writer.close();
        IndexReader reader = IndexReader.open(dir);
        IndexSearcher searcher = new IndexSearcher(reader);
        int docId = searcher.search(new TermQuery(new Term("field1", testString)), null, 10).scoreDocs[0].doc;
        Document doc2 = searcher.doc(docId);
        String recoveredString = doc2.get("field1");
        logger.debug("Recovered String: " + recoveredString);
        assertTrue("Strings do not match", testString.equals(recoveredString));
    } catch (Exception e) {
        logger.error("Exception caught:" + e);
        assertTrue("exception", false);
    }
}

---

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