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;
}
/**
* Checks if the index is optimized.
*
* @return true if it is optimized
*/
public final boolean isOptimized() {
boolean ret = false;
IndexAccessor indexAccessor = this.getAccessor();
IndexReader reader = null;
try {
reader = indexAccessor.getReader(false);
ret = reader.isOptimized();
} catch (IOException ex) {
log.error("IOException happened during test of index. ", ex);
} finally {
indexAccessor.release(reader, false);
}
return ret;
}
@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;
}
}