public synchronized void update(final CharMappingItem item) {
        try (MappingUpdater updater = new MappingUpdater(item)) {
            reload(updater);
        }
    }

    /**
     * Deletes a character mapping item from the dictionary file.
     *
     * @param item the character mapping item to delete
     */
    @Override
    public synchronized void delete(final CharMappingItem item) {

                    docMap.put(fessConfig.getIndexFieldPrimaryTerm(), hit.getPrimaryTerm());
                    return docMap;
                }, cursor);
    }

    /**
     * Deletes documents matching the specified search parameters.
     *
     * @param request The HTTP servlet request
     * @param params The search request parameters to identify documents to delete