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

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

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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.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 ww  w . j  a v a 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   w w  w  . j a  v  a  2 s. c o  m
    }

    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.difference.historybook.index.lucene.LuceneIndex.java

License:Apache License

/**
 * Constructor for LuceneIndex//from  w w w .  j  ava 2s.  c o  m
 * 
 * @param dataDirectory   Path to the directory to create an index directory within.
 * @throws IndexException
 */
public LuceneIndex(Path dataDirectory) throws IndexException {

    //TODO: Check to make sure directory is read/writable
    path = dataDirectory.resolve(INDEXDIR);

    try {
        dir = FSDirectory.open(path);
        analyzer = new StandardAnalyzer();
        IndexWriterConfig iwc = new IndexWriterConfig(analyzer);
        iwc.setOpenMode(OpenMode.CREATE_OR_APPEND);
        writer = new IndexWriter(dir, iwc);

        reader = DirectoryReader.open(writer, false);
        searcher = new IndexSearcher(reader);
        parser = new QueryParser(IndexDocumentAdapter.FIELD_SEARCH, analyzer);
    } catch (IOException e) {
        LOG.error(e.getLocalizedMessage());
        throw new IndexException(e);
    }
}

From source file:com.difference.historybook.index.lucene.LuceneIndex.java

License:Apache License

@Override
public void indexPage(String collection, String url, Instant timestamp, String body) throws IndexException {
    HtmlTextExtractor extractor = new HtmlTextExtractor(body, url);

    Document doc = new IndexDocumentAdapter().setCollection(collection).setUrl(url).setTimestamp(timestamp)
            .setTitle(extractor.getTitle()).setContent(extractor.getContent()).getAsDocument();

    try {/*  w w w .  ja  v a2 s. c o m*/
        writer.addDocument(doc);
        writer.commit();
        reader.close();
        reader = DirectoryReader.open(writer, false);
        searcher = new IndexSearcher(reader);
    } catch (IOException e) {
        LOG.error(e.getLocalizedMessage());
        throw new IndexException(e);
    }
}

From source file:com.digitalpebble.ngrams.NGramCorpus.java

License:Apache License

/**
 * Loads the indexReaders from the directory
 * //  w  w w .ja  v a  2 s .c  o m
 * @throws IOException
 **/
public NGramCorpus(String indexDirectory) throws IOException {
    Directory directory = new SimpleFSDirectory(new File(indexDirectory));
    searcher = new IndexSearcher(directory);
    // get the total number of tokens for this corpus
    // which is stored for 1-grams
    TermQuery tq = new TermQuery(new Term("totalTokenNums", "1"));
    totalNumberTokens = getOccurrences(tq);
}

From source file:com.discursive.jccook.xml.bardsearch.TermSearch.java

License:Apache License

public static void main(String[] pArgs) throws Exception {
    logger.info("Searching for " + pArgs[0]);
    Searcher searcher = new IndexSearcher("index");
    Analyzer analyzer = new SimpleAnalyzer();
    Query query = QueryParser.parse(pArgs[0], "speech", analyzer);
    Hits hits = searcher.search(query);//from  w  w w  .  j a  va 2 s . co  m
    logger.info("Searching Done, hit: " + hits.length());

    System.out.println("Score | Play | Act | Scene | Speaker");

    for (int i = 0; i < hits.length(); i++) {
        Document doc = hits.doc(i);
        System.out.print((int) (hits.score(i) * 100));
        System.out.print(" | " + doc.get("play") + " | " + doc.get("act"));
        System.out.print(" | " + doc.get("scene"));
        System.out.print(" | " + doc.get("speaker") + "\n");
    }
}

From source file:com.docdoku.server.IndexSearcherBean.java

License:Open Source License

public Set<DocumentMasterKey> searchInIndex(String pWorkspaceId, String pContent) {
    try {//from  w w w  .  j  a v a2 s  .co m
        Set<DocumentMasterKey> indexedKeys = new HashSet<DocumentMasterKey>();

        Query fullNameQuery = new WildcardQuery(new Term("fullName", pWorkspaceId + "/*"));
        Query contentQuery = new TermQuery(new Term("content", pContent));
        BooleanQuery mainQuery = new BooleanQuery();
        mainQuery.add(fullNameQuery, BooleanClause.Occur.MUST);
        mainQuery.add(contentQuery, BooleanClause.Occur.MUST);

        if (!indexReader.isCurrent()) {
            //TODO use IndexReader.reopen(); when available
            indexReader.close();
            indexReader = IndexReader.open(FSDirectory.open(new File(indexPath)));
        }
        IndexSearcher indexSearcher = new IndexSearcher(indexReader);
        ScoreDoc[] hits = indexSearcher.search(mainQuery, 500).scoreDocs;
        for (int i = 0; i < hits.length; i++) {
            org.apache.lucene.document.Document doc = indexReader.document(hits[i].doc);
            String fullName = doc.get("fullName");
            String[] partRefs = BinaryResource.parseOwnerRef(fullName).split("/");
            DocumentMasterKey key = new DocumentMasterKey(pWorkspaceId, partRefs[0], partRefs[1]);
            indexedKeys.add(key);
        }

        return indexedKeys;
    } catch (CorruptIndexException ex) {
        throw new EJBException(ex);
    } catch (IOException ex) {
        throw new EJBException(ex);
    }
}

From source file:com.doculibre.constellio.lucene.BaseLuceneIndexHelper.java

License:Open Source License

protected synchronized int getDocNum(T object) {
    int docNum;//w ww. j a  va 2 s .c  om
    String uniqueIndexFieldName = getUniqueIndexFieldName();
    String uniqueIndexFieldValue = getUniqueIndexFieldValue(object);
    if (uniqueIndexFieldValue != null) {
        String query = uniqueIndexFieldName + ":" + uniqueIndexFieldValue;
        try {
            Analyzer analyzer = analyzerProvider.getAnalyzer(Locale.FRENCH);
            QueryParser multiFielsQP = new QueryParser(Version.LUCENE_44, uniqueIndexFieldName, analyzer);
            Query luceneQuery = multiFielsQP.parse(query);

            Directory directory = FSDirectory.open(indexDir);
            IndexReader reader = DirectoryReader.open(directory);
            IndexSearcher indexSearcher = new IndexSearcher(reader);
            TopDocs topDocs = indexSearcher.search(luceneQuery, reader.maxDoc());
            if (topDocs.totalHits > 0) {
                docNum = topDocs.scoreDocs[0].doc;
            } else {
                docNum = -1;
            }
            //               indexSearcher.close();
            // TODO add finally
            reader.close();
            directory.close();
        } catch (ParseException e) {
            throw new RuntimeException(e);
        } catch (CorruptIndexException e) {
            throw new RuntimeException(e);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    } else {
        docNum = -1;
    }
    return docNum;
}

From source file:com.doculibre.constellio.lucene.LuceneSearchResultsProvider.java

License:Open Source License

private synchronized void initIfNecessary() {
    if (topDocs == null) {
        try {/* w  ww . j av  a  2s  .  co  m*/
            Directory directory = FSDirectory.open(indexDir);
            Analyzer analyzer = analyzerProvider.getAnalyzer(Locale.FRENCH);
            MultiFieldQueryParser parser = new MultiFieldQueryParser(Version.LUCENE_44, searchFields, analyzer);
            parser.setAllowLeadingWildcard(true);
            try {
                luceneQuery = parser.parse(luceneTextQuery);
            } catch (ParseException e) {
                try {
                    luceneQuery = parser.parse(QueryParser.escape(luceneTextQuery));
                } catch (ParseException e1) {
                    throw new RuntimeException(e1);
                }
            }
            indexReader = DirectoryReader.open(directory);
            indexSearcher = new IndexSearcher(indexReader);
            //              Sort sort;
            //              if (sortField != null) {
            //                  sort = new Sort(new SortField(sortField, Locale.CANADA_FRENCH, Boolean.FALSE.equals(sortAscending)));
            //              } else {
            //                  sort = null;
            //              }
            topDocs = indexSearcher.search(luceneQuery, indexReader.maxDoc());
            directory.close();
        } catch (CorruptIndexException e) {
            throw new RuntimeException(e);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

From source file:com.dreamerpartner.codereview.lucene.SearchHelper.java

License:Apache License

@SuppressWarnings("deprecation")
public static Document getById(String module, String id) {
    if (StringUtils.isEmpty(id))
        return null;
    IndexReader reader = null;//from   ww w  . j  a v a 2  s.  c o  m
    try {
        reader = DirectoryReader.open(FSDirectory.open(new File(LuceneUtil.getIndexPath(module))));
        IndexSearcher searcher = new IndexSearcher(reader);

        BufferedReader in = new BufferedReader(new InputStreamReader(System.in, StandardCharsets.UTF_8));
        Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_4_10_0);
        //?
        QueryParser parser = new QueryParser(Version.LUCENE_4_10_0, "id", analyzer);
        Query query = parser.parse(id);
        return searchOne(in, searcher, query);
    } catch (Exception e) {
        logger.error(id + " getById fail.", e);
    } finally {
        try {
            if (reader != null)
                reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return null;
}