Example usage for org.springframework.data.domain Sort spliterator

Introduction

In this page you can find the example usage for org.springframework.data.domain Sort spliterator.

Prototype

default Spliterator<T> spliterator() 

Source Link

Document

Creates a Spliterator over the elements described by this Iterable .

Usage

From source file:cn.edu.zjnu.acm.judge.mapper.BestSubmissionsBuilder.java

public static String bestSubmissions(@Param("problemId") long problemId, @Param("pageable") Pageable pageable) {
    Set<String> dejaVu = new TreeSet<>(String.CASE_INSENSITIVE_ORDER);
    Sort sort = Optional.ofNullable(pageable.getSort()).map(s -> s.and(DEFAULT_SORT)).orElse(DEFAULT_SORT);
    Sort.Order[] orders = StreamSupport.stream(sort.spliterator(), false)
            .filter(order -> ALLOW_COLUMNS.contains(order.getProperty()) && dejaVu.add(order.getProperty()))
            .toArray(Sort.Order[]::new);
    final int length = orders.length;
    log.debug("{}", Arrays.asList(orders));

    StringBuilder sb = new StringBuilder(
            "select " + SubmissionMapper.LIST_COLUMNS + " from solution s where problem_id=").append(problemId)
                    .append(" and score=100 ");
    for (int i = length - 1; i >= 0; --i) {
        sb.append("and(user_id");
        for (int j = 0; j <= i; ++j) {
            sb.append(',').append(orders[j].getProperty());
        }/*from  w ww.  j  av a  2  s . com*/
        sb.append(")in(select user_id");
        for (int j = 0; j < i; ++j) {
            sb.append(',').append(orders[j].getProperty());
        }
        sb.append(',').append(orders[i].isAscending() ? "min" : "max").append("(")
                .append(orders[i].getProperty()).append(")").append(orders[i].getProperty())
                .append(" from solution where problem_id=").append(problemId).append(" and score=100 ");
    }
    for (int i = 0; i < length; ++i) {
        sb.append("group by user_id)");
    }
    if (length > 0) {
        sb.append(" order by ");
        for (int i = 0; i < length; ++i) {
            if (i > 0) {
                sb.append(",");
            }
            sb.append(orders[i].getProperty());
            if (!orders[i].isAscending()) {
                sb.append(" desc");
            }
        }
    }
    return sb.append(" limit ").append(pageable.getOffset()).append(",").append(pageable.getPageSize())
            .toString();
}

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From source file:com.epam.ta.reportportal.ws.resolver.SortArgumentResolver.java

@Override
public Sort resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
        NativeWebRequest webRequest, WebDataBinderFactory binderFactory) {

    /*/* w w w. java 2 s .co  m*/
       * Resolve sort argument in default way
     */
    Sort defaultSort = super.resolveArgument(parameter, mavContainer, webRequest, binderFactory);

    /*
       * Try to find parameter to be sorted in internal-external mapping
     */
    if (null != parameter.getParameterAnnotation(SortFor.class) && null != defaultSort) {

        Class<?> domainModelType = parameter.getParameterAnnotation(SortFor.class).value();
        CriteriaMap<?> map = criteriaMapFactory.getCriteriaMap(domainModelType);

        /*
        * Build Sort with search criteria from internal domain model
        */
        return new Sort(StreamSupport.stream(defaultSort.spliterator(), false).map(order -> {
            Optional<CriteriaHolder> criteriaHolder = map.getCriteriaHolderUnchecked(order.getProperty());

            BusinessRule.expect(criteriaHolder, Preconditions.IS_PRESENT)
                    .verify(ErrorType.INCORRECT_SORTING_PARAMETERS, order.getProperty());
            return new Order(order.getDirection(), criteriaHolder.get().getQueryCriteria());
        }).collect(toList()));
    } else {
        /*
         * Return default sort in case there are no SortFor annotation
         */
        return defaultSort;
    }

}

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