List of usage examples for org.apache.lucene.index DirectoryReader indexExists
public static boolean indexExists(Directory directory) throws IOException
true if an index likely exists at the specified directory. From source file:org.apache.tika.parser.geo.topic.GeoNameResolver.java
License:Apache License
/** * Build the gazetteer index line by line * /* w w w .ja va 2s .c om*/ * @param GAZETTEER_PATH * path of the gazetter file * @throws IOException * @throws RuntimeException */ public void buildIndex(String GAZETTEER_PATH) throws IOException { File indexfile = new File(INDEXDIR_PATH); indexDir = FSDirectory.open(indexfile.toPath()); if (!DirectoryReader.indexExists(indexDir)) { IndexWriterConfig config = new IndexWriterConfig(analyzer); indexWriter = new IndexWriter(indexDir, config); Logger logger = Logger.getLogger(this.getClass().getName()); logger.log(Level.WARNING, "Start Building Index for Gazatteer"); BufferedReader filereader = new BufferedReader( new InputStreamReader(new FileInputStream(GAZETTEER_PATH), "UTF-8")); String line; int count = 0; while ((line = filereader.readLine()) != null) { try { count += 1; if (count % 100000 == 0) { logger.log(Level.INFO, "Indexed Row Count: " + count); } addDoc(indexWriter, line); } catch (RuntimeException re) { logger.log(Level.WARNING, "Skipping... Error on line: {}", line); } } logger.log(Level.WARNING, "Building Finished"); filereader.close(); indexWriter.close(); } }
From source file:org.codelibs.elasticsearch.common.lucene.Lucene.java
License:Apache License
public static final boolean indexExists(final Directory directory) throws IOException { return DirectoryReader.indexExists(directory); }
From source file:org.codice.ddf.spatial.geocoding.index.GeoNamesLuceneIndexer.java
License:Open Source License
IndexWriter createIndexWriter(final boolean create, final Directory directory) throws IOException { final IndexWriterConfig indexWriterConfig = new IndexWriterConfig(ANALYZER); // Set to CREATE mode if the index does not exist. if (!DirectoryReader.indexExists(directory)) { indexWriterConfig.setOpenMode(OpenMode.CREATE); } else {/*w w w. j a va 2s .co m*/ indexWriterConfig.setOpenMode(create ? OpenMode.CREATE : OpenMode.APPEND); } indexWriterConfig.setSimilarity(SIMILARITY); return new IndexWriter(directory, indexWriterConfig); }
From source file:org.codice.ddf.spatial.geocoding.query.GeoNamesQueryLuceneIndex.java
License:Open Source License
protected boolean indexExists(final Directory directory) throws IOException { return DirectoryReader.indexExists(directory); }
From source file:org.dspace.search.LuceneIndex.java
License:BSD License
@Override public void init(String config) { indexDirectory = config;//from ww w. ja va 2 s. c om File indexDir = new File(indexDirectory); try { if (!DirectoryReader.indexExists(FSDirectory.open(indexDir))) { indexDir.mkdirs(); openIndex(true).close(); } } catch (IOException e) { throw new IllegalStateException("Could not create search index: " + e.getMessage(), e); } // set maxfieldlength maxFieldLength = ConfigurationManager.getIntProperty("search", "maxfieldlength", -1); }
From source file:org.eclipse.rdf4j.sail.lucene.LuceneIndex.java
License:Open Source License
private void postInit() throws IOException { this.queryAnalyzer = new StandardAnalyzer(); // do some initialization for new indices if (!DirectoryReader.indexExists(directory)) { logger.debug("creating new Lucene index in directory {}", directory); IndexWriterConfig indexWriterConfig = new IndexWriterConfig(analyzer); indexWriterConfig.setOpenMode(OpenMode.CREATE); IndexWriter writer = new IndexWriter(directory, indexWriterConfig); writer.close();/*from www . j a v a2 s . c o m*/ } }
From source file:org.eu.bitzone.Leia.java
License:Apache License
/** * Attempt to load the index with parameters specified in the dialog. * <p>/*from w w w . j a v a2 s.c o m*/ * NOTE: this method is invoked from the UI. If you need to open an index programmatically, you should use * {@link #openIndex(String, boolean, boolean, boolean)} instead. * </p> * * @param dialog UI dialog with parameters */ public void openOk(final Object dialog) { final Object path = find(dialog, "path"); pName = getString(path, "text").trim(); final boolean force = getBoolean(find(dialog, "force"), "selected"); final boolean noReader = getBoolean(find(dialog, "cbNoReader"), "selected"); tiiDiv = 1; try { tiiDiv = Integer.parseInt(getString(find(dialog, "tiiDiv"), "text")); } catch (final Exception e) { e.printStackTrace(); } final Object dirImpl = getSelectedItem(find(dialog, "dirImpl")); String dirClass = null; if (dirImpl == null) { dirClass = FSDirectory.class.getName(); } else { final String name = getString(dirImpl, "name"); if (name == null) { dirClass = getString(dirImpl, "text"); } else { if (name.equals("fs")) { dirClass = FSDirectory.class.getName(); } else if (name.equals("mmap")) { dirClass = MMapDirectory.class.getName(); } else if (name.equals("niofs")) { dirClass = NIOFSDirectory.class.getName(); } } } if (pName == null || pName.trim().equals("")) { errorMsg("Invalid path."); return; } readOnly = getBoolean(find(dialog, "ro"), "selected"); ram = getBoolean(find(dialog, "ram"), "selected"); keepCommits = getBoolean(find(dialog, "cbKeepCommits"), "selected"); slowAccess = getBoolean(find(dialog, "cbSlowIO"), "selected"); decoders.clear(); currentCommit = null; Prefs.addToMruList(pName); syncMRU(path); remove(dialog); if (noReader) { removeAll(); addComponent(this, "/xml/luke.xml", null, null); try { final Directory d = openDirectory(dirClass, pName, false); if (DirectoryReader.indexExists(d)) { throw new Exception("there is no valid Lucene index in this directory."); } dir = d; initOverview(); infoMsg("There is no IndexReader - most actions are disabled. " + "You can open IndexReader from current Directory using 'Re-Open'"); } catch (final Exception e) { errorMsg("ERROR: " + e.toString()); } } else { openIndex(pName, force, dirClass, readOnly, ram, keepCommits, null, tiiDiv); } }
From source file:org.getopt.luke.Luke.java
License:Apache License
/** * Attempt to load the index with parameters specified in the dialog. * <p>NOTE: this method is invoked from the UI. If you need to open an index * programmatically, you should use {@link: openIndex(String, boolean, String, boolean, boolean, boolean , IndexCommit, int)} instead.</p> * @param dialog UI dialog with parameters *//* w w w .j a va2s . com*/ public void openOk(Object dialog) { Object path = find(dialog, "path"); pName = getString(path, "text").trim(); boolean force = getBoolean(find(dialog, "force"), "selected"); boolean noReader = getBoolean(find(dialog, "cbNoReader"), "selected"); tiiDiv = 1; try { tiiDiv = Integer.parseInt(getString(find(dialog, "tiiDiv"), "text")); } catch (Exception e) { e.printStackTrace(); } Object dirImpl = getSelectedItem(find(dialog, "dirImpl")); String dirClass = null; if (dirImpl == null) { dirClass = FSDirectory.class.getName(); } else { String name = getString(dirImpl, "name"); if (name == null) { dirClass = getString(dirImpl, "text"); } else { if (name.equals("fs")) { dirClass = FSDirectory.class.getName(); } else if (name.equals("mmap")) { dirClass = MMapDirectory.class.getName(); } else if (name.equals("niofs")) { dirClass = NIOFSDirectory.class.getName(); } } } if (pName == null || pName.trim().equals("")) { errorMsg("Invalid path."); return; } readOnly = getBoolean(find(dialog, "ro"), "selected"); ram = getBoolean(find(dialog, "ram"), "selected"); keepCommits = getBoolean(find(dialog, "cbKeepCommits"), "selected"); slowAccess = getBoolean(find(dialog, "cbSlowIO"), "selected"); decoders.clear(); currentCommit = null; Prefs.addToMruList(pName); syncMRU(path); remove(dialog); if (noReader) { removeAll(); addComponent(this, "/xml/luke.xml", null, null); try { Directory d = openDirectory(dirClass, pName, false); if (DirectoryReader.indexExists(d)) { throw new Exception("there is no valid Lucene index in this directory."); } dir = d; initOverview(); infoMsg("There is no IndexReader - most actions are disabled. " + "You can open IndexReader from current Directory using 'Re-Open'"); } catch (Exception e) { errorMsg("ERROR: " + e.toString()); } } else { openIndex(pName, force, dirClass, readOnly, ram, keepCommits, null, tiiDiv); } }
From source file:org.hibernate.search.store.spi.DirectoryHelper.java
License:LGPL
/** * Initialize the Lucene Directory if it isn't already. * * @param directory the Directory to initialize * @throws SearchException in case of lock acquisition timeouts, IOException, or if a corrupt index is found *///w ww . ja v a2 s . c o m public static void initializeIndexIfNeeded(Directory directory) { SimpleAnalyzer analyzer = new SimpleAnalyzer(); try { if (!DirectoryReader.indexExists(directory)) { try { IndexWriterConfig iwriterConfig = new IndexWriterConfig(analyzer) .setOpenMode(OpenMode.CREATE_OR_APPEND); //Needs to have a timeout higher than zero to prevent race conditions over (network) RPCs //for distributed indexes (Infinispan but probably also NFS and similar) iwriterConfig.setWriteLockTimeout(2000); IndexWriter iw = new IndexWriter(directory, iwriterConfig); iw.close(); } catch (LockObtainFailedException lofe) { log.lockingFailureDuringInitialization(directory.toString()); } } } catch (IOException e) { throw new SearchException("Could not initialize index", e); } finally { analyzer.close(); } }
From source file:org.modeshape.jcr.index.lucene.LuceneConfig.java
License:Apache License
protected IndexWriter newWriter(String workspaceName, String indexName) { CheckArg.isNotNull(indexName, "indexName"); CheckArg.isNotNull(workspaceName, "workspaceName"); try {//from ww w . j av a 2 s . com Directory directory = directory(directoryClass, workspaceName, indexName); IndexWriter indexWriter = new IndexWriter(directory, newIndexWriterConfig()); if (DirectoryReader.indexExists(directory)) { readLatestCommitTime(indexWriter); } return indexWriter; } catch (IOException e) { throw new LuceneIndexException("Cannot create index writer", e); } }