public static SimpleOrderedMap<Object> getIndexInfo(IndexReader reader, boolean countTerms) throws IOException { Directory dir = reader.directory(); SimpleOrderedMap<Object> indexInfo = new SimpleOrderedMap<Object>(); indexInfo.add("numDocs", reader.numDocs()); indexInfo.add("maxDoc", reader.maxDoc()); if (countTerms) { TermEnum te = null; try { te = reader.terms(); int numTerms = 0; while (te.next()) { numTerms++; } indexInfo.add("numTerms", numTerms); } finally { if (te != null) te.close(); } } indexInfo.add( "version", reader.getVersion()); // TODO? Is this different then: IndexReader.getCurrentVersion( dir )? indexInfo.add("optimized", reader.isOptimized()); indexInfo.add("current", reader.isCurrent()); indexInfo.add("hasDeletions", reader.hasDeletions()); indexInfo.add("directory", dir); indexInfo.add("lastModified", new Date(IndexReader.lastModified(dir))); return indexInfo; }
@Override public boolean reload(String collectionName, String topRankingField) { if (collectionName == null) { return false; } CrescentCollectionHandler collectionHandler = SpringApplicationContext.getBean( "crescentCollectionHandler", CrescentCollectionHandler.class); CrescentCollection collection = collectionHandler.getCrescentCollections().getCrescentCollection(collectionName); if (collection == null) { logger.debug("doesn't Collection Info => {}", collectionName); init(View.Overview); return false; } if (topRankingField == null) { if (collection.getDefaultSearchFields().get(0) != null) { topRankingField = collection.getDefaultSearchFields().get(0).getName(); } else { logger.debug("doesn't defaultSearchField => {}", collectionName); init(View.Overview); return false; } } List<String> fieldName = new ArrayList<String>(); for (CrescentCollectionField field : collection.getFields()) fieldName.add(field.getName()); TopRankingQueue topRankingQueue = new TopRankingQueue(DEFAULT_TOPRANKING_TERM, new RankingTermComparator()); try { Directory directory = FSDirectory.open(new File(collection.getIndexingDirectory())); IndexReader reader = IndexReader.open(directory); TermEnum terms = reader.terms(); int termFreq = 0; int termCount = 0; Term beforeTerm = null; // init term count fieldTermCount.clear(); for (CrescentCollectionField field : collection.getFields()) fieldTermCount.put(field.getName(), 0); topRankingQueue.clear(); while (terms.next()) { Term currTerm = terms.term(); if (beforeTerm == null) { beforeTerm = currTerm; } if (beforeTerm.field() == currTerm.field()) { termCount++; } else { fieldTermCount.put(beforeTerm.field(), termCount); termCount = 1; beforeTerm = currTerm; } TermDocs termDocs = reader.termDocs(currTerm); while (termDocs.next()) { if (currTerm.field().equals(topRankingField)) { RankingTerm e = new RankingTerm(currTerm.text(), currTerm.field(), termDocs.freq()); topRankingQueue.add(e); } } termFreq++; } if (beforeTerm != null) fieldTermCount.put(beforeTerm.field(), termCount); terms.close(); result.put("numOfTerm", termFreq); result.put("numOfDoc", reader.numDocs()); result.put("hasDel", reader.hasDeletions()); result.put("isOptimize", reader.isOptimized()); result.put("indexVersion", reader.getVersion()); result.put("lastModify", new Date(IndexReader.lastModified(directory))); } catch (IOException e) { e.printStackTrace(); return false; } if (topRankingQueue.size() != 0) { topRankingTerms = topRankingQueue.toArray(); Arrays.sort(topRankingTerms); } result.put("collectionName", collectionName); result.put("indexName", collection.getIndexingDirectory()); result.put("numOfField", collection.getFields().size()); result.put("termCount", fieldTermCount); result.put("topRanking", topRankingTerms); result.put("fieldName", fieldName); return true; }
public IndexInfo(String indexName, Directory directory, Analyzer analyzer) throws CorruptIndexException, IOException { IndexWriter iwriter = null; IndexReader indexReader = null; try { iwriter = new IndexWriter(directory, analyzer, false, IndexWriter.MaxFieldLength.UNLIMITED); indexReader = iwriter.getReader(); this.index_name = indexName; this.index_version = indexReader.getVersion(); this.optimized = indexReader.isOptimized(); this.numDocs = indexReader.numDocs(); Date date = new Date(IndexReader.lastModified(directory)); DateFormat formatter = new SimpleDateFormat("EEEE, dd MMMM yyyy, hh:mm:ss a"); this.lastModifyDate = formatter.format(date); this.files = new HashMap<String, String>(); String[] files = directory.listAll(); for (int i = 0; i < files.length; i++) { if (files[i].startsWith("_")) this.files.put( files[i], Long.toString( Math.round( FileSizeConverter.convertSize( directory.fileLength(files[i]), FileSizeConverter.KB))) + " KB"); } indexReader.close(); iwriter.close(); iwriter = null; directory.clearLock(directory.getLockID()); } catch (CorruptIndexException e) { if (iwriter != null) { iwriter.close(); iwriter = null; } if (indexReader != null) { indexReader.close(); indexReader = null; } throw e; } catch (LockObtainFailedException e) { if (iwriter != null) { iwriter.close(); iwriter = null; } if (indexReader != null) { indexReader.close(); indexReader = null; } throw e; } catch (IOException e) { if (iwriter != null) { iwriter.close(); iwriter = null; } if (indexReader != null) { indexReader.close(); indexReader = null; } throw e; } }