assertEquals(2, suggester.getDocumentWordsNum());
        assertEquals(1, suggester.getQueryWordsNum());

        suggester.indexer().deleteAll();
        suggester.refresh();
        assertEquals(0, suggester.getAllWordsNum());
        assertEquals(0, suggester.getDocumentWordsNum());
        assertEquals(0, suggester.getQueryWordsNum());
    }

    @Test
    public void test_deleteDocumentWords() throws Exception {

        final SuggestBody body = new SuggestBody();
        body.totalWordsNum = suggestHelper.getAllWordsNum();
        body.documentWordsNum = suggestHelper.getDocumentWordsNum();
        body.queryWordsNum = suggestHelper.getQueryWordsNum();
        return asJson(new ApiResult.ApiConfigResponse().setting(body).status(ApiResult.Status.OK).result());
    }

    // DELETE /api/admin/suggest/all
    @Execute

        runtime.registerData("totalWordsNum", suggestHelper.getAllWordsNum());
        runtime.registerData("documentWordsNum", suggestHelper.getDocumentWordsNum());
        runtime.registerData("queryWordsNum", suggestHelper.getQueryWordsNum());
    }

    @Override
    protected String getActionRole() {
        return ROLE;
    }

    // ===================================================================================

        return suggester.getAllWordsNum();
    }

    public long getDocumentWordsNum() {
        return suggester.getDocumentWordsNum();
    }

    public long getQueryWordsNum() {
        return suggester.getQueryWordsNum();
    }

    public boolean deleteAllWords() {
        final SuggestDeleteResponse response = suggester.indexer().deleteAll();
        if (response.hasError()) {

        return getNum(QueryBuilders.matchAllQuery());
    }

    public long getDocumentWordsNum() {
        return getNum(QueryBuilders.rangeQuery(FieldNames.DOC_FREQ).gte(1));
    }

    public long getQueryWordsNum() {
        return getNum(QueryBuilders.rangeQuery(FieldNames.QUERY_FREQ).gte(1));
    }

    private long getNum(final QueryBuilder queryBuilder) {