@Override
  public void addDocuments(
      String searchEngineId,
      long companyId,
      Collection<Document> documents,
      boolean commitImmediately)
      throws SearchException {

    if (isIndexReadOnly() || (documents == null) || documents.isEmpty()) {
      return;
    }

    SearchEngine searchEngine = _searchEngineHelper.getSearchEngine(searchEngineId);

    IndexWriter indexWriter = searchEngine.getIndexWriter();

    for (Document document : documents) {
      if (_log.isDebugEnabled()) {
        _log.debug("Add document " + document.toString());
      }

      _searchPermissionChecker.addPermissionFields(companyId, document);
    }

    SearchContext searchContext = new SearchContext();

    searchContext.setCompanyId(companyId);
    searchContext.setSearchEngineId(searchEngineId);

    setCommitImmediately(searchContext, commitImmediately);

    indexWriter.addDocuments(searchContext, documents);
  }
  @Override
  public void updateDocument(
      String searchEngineId, long companyId, Document document, boolean commitImmediately)
      throws SearchException {

    if (isIndexReadOnly() || (document == null)) {
      return;
    }

    if (_log.isDebugEnabled()) {
      _log.debug("Document " + document.toString());
    }

    SearchEngine searchEngine = _searchEngineHelper.getSearchEngine(searchEngineId);

    IndexWriter indexWriter = searchEngine.getIndexWriter();

    _searchPermissionChecker.addPermissionFields(companyId, document);

    SearchContext searchContext = new SearchContext();

    searchContext.setCompanyId(companyId);
    searchContext.setSearchEngineId(searchEngineId);

    setCommitImmediately(searchContext, commitImmediately || ProxyModeThreadLocal.isForceSync());

    indexWriter.updateDocument(searchContext, document);
  }