}
    }

    /**
     * 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) {
        final CharMappingItem mappingItem = item;
        mappingItem.setNewInputs(StringUtil.EMPTY_STRINGS);
        mappingItem.setNewOutput(StringUtil.EMPTY);

                try {
                    dictionaryManager.store(StemmerOverrideFile.this, newFile);
                } finally {
                    newFile.delete();
                }
            } else {
                newFile.delete();
            }
        }
    }

    }

    /**
     * Deletes documents matching the specified search parameters.
     *
     * @param request The HTTP servlet request
     * @param params The search request parameters to identify documents to delete
     * @return Number of documents deleted
     */
    public long deleteByQuery(final HttpServletRequest request, final SearchRequestParams params) {