@Override
public void close() {
CloseUtil.close(indexSearcher);
CloseUtil.close(indexReader);
CloseUtil.close(indexWriter);
CloseUtil.close(directory);
opened.set(false);
if (logger.isWarnEnabled()) {
logger.warn("search engine has been closed.");
}
}
public OperationResponse commitAndOptimize() {
try {
if (logger.isDebugEnabled()) {
logger.debug("commiting...");
}
indexWriter.commit();
if (logger.isDebugEnabled()) {
logger.debug("commit finish.");
}
if (logger.isDebugEnabled()) {
logger.debug("optimizing...");
}
indexWriter.forceMerge(defaultMergeSize);
if (logger.isDebugEnabled()) {
logger.debug("optimize finish.");
}
reopenSearcher();
} catch (IOException e) {
logger.error("optimize error", e);
return new OperationResponse(e.getMessage(), ResultCodes.COMMON_ERROR);
} catch (OutOfMemoryError e) {
CloseUtil.close(indexWriter);
logger.error("error of OOM", e);
return new OperationResponse(e.getMessage(), ResultCodes.COMMON_ERROR);
}
return new OperationResponse();
}
protected void reopenSearcher() throws IOException {
try {
reopenLock.lock();
if (updateCount.get() > 0) {
logger.info("proccessing reopen...");
IndexReader oldIndexReader = this.indexReader;
IndexSearcher oldIndexSearcher = this.indexSearcher;
IndexReader newIndexReader = IndexReader.openIfChanged(oldIndexReader);
if (newIndexReader != null) {
IndexSearcher newIndexSearcher = new IndexSearcher(newIndexReader);
indexSearcher = newIndexSearcher;
indexReader = newIndexReader;
CloseUtil.close(oldIndexReader);
CloseUtil.close(oldIndexSearcher);
}
updateCount.set(0);
logger.info("proccess reopen finish.");
} else {
logger.info("no thing to reopen");
}
} finally {
reopenLock.unlock();
}
}
@Override
public OperationResponse commit() {
try {
if (logger.isDebugEnabled()) {
logger.debug("commiting...");
}
indexWriter.commit();
if (logger.isDebugEnabled()) {
logger.debug("commit finish.");
}
reopenSearcher();
} catch (IOException e) {
logger.error("commit error", e);
return new OperationResponse(e.getMessage(), ResultCodes.COMMON_ERROR);
} catch (OutOfMemoryError e) {
CloseUtil.close(indexWriter);
logger.error("error of OOM", e);
// TODO reopen writer?
return new OperationResponse(e.getMessage(), ResultCodes.COMMON_ERROR);
}
return new OperationResponse();
}
protected void open(Directory directory) throws IOException {
IndexWriter newIndexWriter = null;
IndexReader newIndexReader = null;
IndexSearcher newIndexSearcher = null;
if (logger.isDebugEnabled()) {
logger.debug("opening directory...");
}
try {
IndexWriterConfig indexWriterConfig =
new IndexWriterConfig(LuceneConfig.LUCENE_VERSION, schema.getAnalyzer());
newIndexWriter = new IndexWriter(directory, indexWriterConfig);
newIndexReader = IndexReader.open(newIndexWriter, true);
newIndexSearcher = new IndexSearcher(newIndexReader);
synchronized (this) {
IndexWriter oldIndexWriter = this.indexWriter;
IndexSearcher oldIndexSearcher = this.indexSearcher;
IndexReader oldIndexReader = this.indexReader;
this.indexWriter = newIndexWriter;
this.indexSearcher = newIndexSearcher;
this.indexReader = newIndexReader;
CloseUtil.close(oldIndexSearcher);
CloseUtil.close(oldIndexReader);
CloseUtil.close(oldIndexWriter);
}
if (logger.isDebugEnabled()) {
logger.debug("open directory finish.");
}
} catch (IOException e) {
logger.error("open directory error", e);
CloseUtil.close(newIndexSearcher);
CloseUtil.close(newIndexReader);
CloseUtil.close(newIndexWriter);
throw e;
}
}
