return 0;
            }

            @Override
            public int getPageSize() {
                return 0;
            }

            @Override
            public String[] getExtraQueries() {
                return extraQueries;
            }

            @Override
            public Object getAttribute(String name) {
                return null;
            }

        }

        @Override
        public String getQuery() {
            return request.getParameter("q");
        }

        @Override
        public String[] getExtraQueries() {
            return getParamValueArray(request, "ex_q");
        }

        @Override
        public Map<String, String[]> getFields() {
            final Map<String, String[]> fields = new HashMap<>();

    public String[] ex_q;

    /** The similar document hash. */
    public String sdh;

    @Override
    public String getQuery() {
        return q;
    }

    @Override
    public String[] getExtraQueries() {
        return stream(ex_q).get(stream -> stream.filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]));
    }

    @Override
    public Map<String, String[]> getFields() {
        return fields;

            }
        }
        return num;
    }

    @Override
    public String getQuery() {
        return q;
    }

    @Override
    public String[] getExtraQueries() {
        return stream(ex_q).get(stream -> stream.filter(StringUtil::isNotBlank).distinct().toArray(n -> new String[n]));
    }

    @Override
    public Map<String, String[]> getFields() {

            return 0;
        }

        @Override
        public int getPageSize() {
            return pageSize;
        }

        @Override
        public String[] getExtraQueries() {
            return parent.getExtraQueries();
        }

        @Override
        public Object getAttribute(final String name) {
            return parent.getAttribute(name);
        }

        @Override

        final String query = buildBaseQuery();
        if (StringUtil.isNotBlank(query)) {
            queryBuf.append(escapeQuery(query));
        }

        stream(params.getExtraQueries())
                .of(stream -> stream.filter(q -> StringUtil.isNotBlank(q) && q.length() <= maxQueryLength).forEach(q -> {
                    appendQuery(queryBuf, q);
                }));

            }

            @Override
            public Object getAttribute(String name) {
                return null;
            }

            @Override
            public String[] getExtraQueries() {
                return new String[0];
            }

            @Override
            public int getOffset() {
                return 0;
            }

            @Override

     * @return The offset.
     */
    public abstract int getOffset();

    /**
     * Returns the extra queries.
     *
     * @return The extra queries.
     */
    public abstract String[] getExtraQueries();

    /**
     * Returns the attribute.
     *
     * @param name The name of the attribute.
     * @return The attribute.
     */
    public abstract Object getAttribute(String name);

            return pageSize;
        }

        @Override
        public int getOffset() {
            return 0;
        }

        @Override
        public String[] getExtraQueries() {
            return new String[0];
        }

        @Override
        public Object getAttribute(String name) {
            if (Constants.HIGHLIGHT_QUERIES.equals(name)) {

            return pageSize;
        }

        @Override
        public int getOffset() {
            return offset;
        }

        @Override
        public String[] getExtraQueries() {
            return extraQueries;
        }

        @Override
        public Object getAttribute(String name) {
            return attributes.get(name);
        }

        @Override