fail();
        } catch (IllegalArgumentException e) {
            // nothing
        }
    }

    public void test_invalid_query() {
        try {
            new DefaultQueryBuilder(QueryBuilders.matchAllQuery());
            fail();
        } catch (IllegalArgumentException e) {
            // nothing
        }
    }

    protected final String[] supportedFields;

    protected int scrollSize = 1;
    protected int maxRetryCount = 5;
    protected long limitOfDocumentSize = 50000;
    protected QueryBuilder queryBuilder = QueryBuilders.matchAllQuery();
    protected int limitPercentage = 100;
    protected long limitNumber = -1;
    protected List<SortBuilder<?>> sortList = new ArrayList<>();

    protected String scrollId = null;

                }
            } else if (queryBuilder != null) {
                builder.setQuery(queryBuilder);
            } else {
                builder.setQuery(QueryBuilders.matchAllQuery());
            }
            if (sortBuilders != null) {
                for (SortBuilder<?> sortBuilder : sortBuilders) {
                    builder.addSort(sortBuilder);
                }
            }

        try {
            final QueryBuilder queryBuilder;
            if (Strings.isNullOrEmpty(q)) {
                queryBuilder = QueryBuilders.matchAllQuery();
            } else {
                final boolean prefixQuery = !q.endsWith(" ") && !q.endsWith("　");
                List<String> readingList = new ArrayList<>();

                    .seed(ComponentUtil.getSystemHelper().getCurrentTimeAsLong()).setField(fessConfig.getIndexFieldDocId())));
            reader.setQuery(QueryBuilders
                    .functionScoreQuery(QueryBuilders.matchAllQuery(),
                            flist.toArray(new FunctionScoreQueryBuilder.FilterFunctionBuilder[flist.size()]))
                    .boostMode(CombineFunction.MULTIPLY));

                suggestSettings, threadPool);
    }

    public String getIndex() {
        return index;
    }

    public long getAllWordsNum() {
        return getNum(QueryBuilders.matchAllQuery());
    }

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

    public long getQueryWordsNum() {

    }

    public SuggestDeleteResponse deleteAll() {
        final SuggestDeleteResponse response = deleteByQuery(QueryBuilders.matchAllQuery());
        restoreElevateWord();
        return response;
    }

    public SuggestDeleteResponse deleteDocumentWords() {
        final long start = System.currentTimeMillis();