Examples with KeysetPageable com.blazebit.persistence.spring.data.repository.KeysetPageable used on opensource projects

Example 1 with KeysetPageable

use of com.blazebit.persistence.spring.data.repository.KeysetPageable in project blaze-persistence by Blazebit.

the class AbstractEntityViewAwareRepository method getQuery.

protected <S extends E> TypedQuery<V> getQuery(Specification<S> spec, Class<S> domainClass, Pageable pageable, Sort sort) {
    BlazeCriteriaQuery<S> cq = BlazeCriteria.get(cbf, domainClass);
    Root<S> root = this.applySpecificationToCriteria(spec, domainClass, cq);
    Class<V> entityViewClass = metadata == null || metadata.getEntityViewClass() == null ? this.entityViewClass : (Class<V>) metadata.getEntityViewClass();
    if (sort != null && entityViewClass == null) {
        cq.orderBy(QueryUtils.toOrders(sort, root, BlazeCriteria.get(cbf)));
    }
    CriteriaBuilder<S> cb = cq.createCriteriaBuilder(entityManager);
    String[] fetches = EMPTY;
    if (metadata != null && metadata.getEntityGraph() != null && (fetches = metadata.getEntityGraph().attributePaths()).length != 0) {
        cb.fetch(fetches);
    }
    boolean withCountQuery = true;
    boolean withKeysetExtraction = false;
    boolean withExtractAllKeysets = false;
    TypedQuery<V> query;
    if (entityViewClass == null) {
        if (pageable == null) {
            query = (TypedQuery<V>) cb.getQuery();
        } else {
            PaginatedCriteriaBuilder<S> paginatedCriteriaBuilder;
            if (pageable instanceof KeysetPageable) {
                KeysetPageable keysetPageable = (KeysetPageable) pageable;
                paginatedCriteriaBuilder = cb.page(keysetPageable.getKeysetPage(), getOffset(pageable), pageable.getPageSize());
                withCountQuery = keysetPageable.isWithCountQuery();
                withKeysetExtraction = true;
                withExtractAllKeysets = keysetPageable.isWithExtractAllKeysets();
            } else {
                paginatedCriteriaBuilder = cb.page(getOffset(pageable), pageable.getPageSize());
            }
            if (withKeysetExtraction) {
                paginatedCriteriaBuilder.withKeysetExtraction(true);
                paginatedCriteriaBuilder.withExtractAllKeysets(withExtractAllKeysets);
            }
            paginatedCriteriaBuilder.withCountQuery(withCountQuery);
            query = (TypedQuery<V>) paginatedCriteriaBuilder.getQuery();
        }
    } else {
        if (pageable == null) {
            EntityViewSetting<V, CriteriaBuilder<V>> setting = EntityViewSetting.create(entityViewClass);
            CriteriaBuilder<V> fqb = evm.applySetting(setting, cb);
            if (sort != null) {
                EntityViewSortUtil.applySort(evm, entityViewClass, fqb, sort);
            }
            query = fqb.getQuery();
        } else {
            EntityViewSetting<V, PaginatedCriteriaBuilder<V>> setting = EntityViewSetting.create(entityViewClass, getOffset(pageable), pageable.getPageSize());
            if (pageable instanceof KeysetPageable) {
                KeysetPageable keysetPageable = (KeysetPageable) pageable;
                setting.withKeysetPage(keysetPageable.getKeysetPage());
                withCountQuery = keysetPageable.isWithCountQuery();
                withKeysetExtraction = true;
                withExtractAllKeysets = keysetPageable.isWithExtractAllKeysets();
            }
            PaginatedCriteriaBuilder<V> paginatedCriteriaBuilder = evm.applySetting(setting, cb);
            if (withKeysetExtraction) {
                paginatedCriteriaBuilder.withKeysetExtraction(true);
                paginatedCriteriaBuilder.withExtractAllKeysets(withExtractAllKeysets);
            }
            paginatedCriteriaBuilder.withCountQuery(withCountQuery);
            if (sort != null || (sort = pageable.getSort()) != null) {
                EntityViewSortUtil.applySort(evm, entityViewClass, paginatedCriteriaBuilder, sort);
            }
            query = paginatedCriteriaBuilder.getQuery();
        }
    }
    return this.applyRepositoryMethodMetadata(query, fetches.length == 0);
}

Example 2 with KeysetPageable

use of com.blazebit.persistence.spring.data.repository.KeysetPageable in project blaze-persistence by Blazebit.

the class KeysetPageableHandlerMethodArgumentResolver method resolveArgument.

@Override
public KeysetPageable resolveArgument(MethodParameter methodParameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) {
    assertPageableUniqueness(methodParameter);
    Pageable defaultOrFallback = getDefaultFromAnnotationOrFallback(methodParameter);
    String pageString = webRequest.getParameter(getParameterNameToUse(getPageParameterName(), methodParameter));
    String offsetString = webRequest.getParameter(getParameterNameToUse(getOffsetParameterName(), methodParameter));
    String pageSizeString = webRequest.getParameter(getParameterNameToUse(getSizeParameterName(), methodParameter));
    boolean pageAndSizeGiven = (StringUtils.hasText(pageString) || StringUtils.hasText(offsetString)) && StringUtils.hasText(pageSizeString);
    if (!pageAndSizeGiven && defaultOrFallback == null) {
        return null;
    }
    int pageSize = StringUtils.hasText(pageSizeString) ? parseAndApplyBoundaries(pageSizeString, getMaxPageSize(), false) : defaultOrFallback.getPageSize();
    // Limit lower bound
    pageSize = pageSize < 1 ? defaultOrFallback.getPageSize() : pageSize;
    // Limit upper bound
    pageSize = pageSize > getMaxPageSize() ? getMaxPageSize() : pageSize;
    int offset;
    if (StringUtils.hasText(offsetString)) {
        offset = parseAndApplyBoundaries(offsetString, Integer.MAX_VALUE, false);
    } else if (StringUtils.hasText(pageString)) {
        offset = pageSize * parseAndApplyBoundaries(pageString, Integer.MAX_VALUE, true);
    } else {
        offset = pageSize * defaultOrFallback.getPageNumber();
    }
    org.springframework.data.domain.Sort sort = sortResolver.resolveArgument(methodParameter, mavContainer, webRequest, binderFactory);
    // Default if necessary and default configured
    sort = sort == UNSORTED && defaultOrFallback != null ? defaultOrFallback.getSort() : sort;
    KeysetPage keysetPage = null;
    Iterator<org.springframework.data.domain.Sort.Order> iterator;
    if (sort != null && (iterator = sort.iterator()).hasNext()) {
        KeysetConfig keysetConfig = methodParameter.getParameterAnnotation(KeysetConfig.class);
        Class<?> domainClass = keysetConfig.keysetClass();
        if (domainClass == void.class) {
            domainClass = keysetConfig.value();
        }
        if (domainClass == void.class) {
            Method annotatedMethod = methodParameter.getMethod();
            throw new IllegalStateException(String.format(INVALID_KEYSET_DOMAIN_CLASS, annotatedMethod));
        }
        String previousOffsetName = getParameterName(keysetConfig.previousOffsetName(), getParameterNameToUse(getPreviousOffsetParameterName(), methodParameter));
        String previousOffsetString = webRequest.getParameter(previousOffsetName);
        String previousPageName = getParameterName(keysetConfig.previousPageName(), getParameterNameToUse(getPreviousPageParameterName(), methodParameter));
        String previousPageString = webRequest.getParameter(previousPageName);
        if (StringUtils.hasText(previousOffsetString) || StringUtils.hasText(previousPageString)) {
            String previousPageSizeName = getParameterName(keysetConfig.previousPageSizeName(), getParameterNameToUse(getPreviousSizeParameterName(), methodParameter));
            String previousPageSizeString = webRequest.getParameter(previousPageSizeName);
            int previousPageSize = StringUtils.hasText(previousPageSizeString) ? parseAndApplyBoundaries(previousPageSizeString, getMaxPageSize(), false) : pageSize;
            int previousOffset;
            if (StringUtils.hasText(previousOffsetString)) {
                previousOffset = parseAndApplyBoundaries(previousOffsetString, Integer.MAX_VALUE, false);
            } else {
                int previousPage = parseAndApplyBoundaries(previousPageString, Integer.MAX_VALUE, true);
                previousOffset = previousPage * previousPageSize;
            }
            String lowestName = getParameterName(keysetConfig.lowestName(), getParameterNameToUse(getLowestParameterName(), methodParameter));
            String lowestString = webRequest.getParameter(lowestName);
            String highestName = getParameterName(keysetConfig.highestName(), getParameterNameToUse(getHighestParameterName(), methodParameter));
            String highestString = webRequest.getParameter(highestName);
            if (StringUtils.hasText(lowestString) && StringUtils.hasText(highestString)) {
                List<Serializable> lowest = new ArrayList<>();
                List<Serializable> highest = new ArrayList<>();
                JsonNode lowestObject;
                JsonNode highestObject;
                try {
                    lowestObject = mapper.readTree(lowestString);
                } catch (IOException ex) {
                    throw new IllegalArgumentException("Invalid lowest object!", ex);
                }
                try {
                    highestObject = mapper.readTree(highestString);
                } catch (IOException ex) {
                    throw new IllegalArgumentException("Invalid highest object!", ex);
                }
                while (iterator.hasNext()) {
                    org.springframework.data.domain.Sort.Order o = iterator.next();
                    JsonNode low = lowestObject;
                    JsonNode high = highestObject;
                    String[] propertyParts = o.getProperty().split("\\.");
                    Class<? extends Serializable> propertyType = getPropertyType(domainClass, o.getProperty());
                    for (int i = 0; i < propertyParts.length; i++) {
                        low = low == null ? null : low.get(propertyParts[i]);
                        high = high == null ? null : high.get(propertyParts[i]);
                    }
                    lowest.add(low == null ? null : convert(low, propertyType));
                    highest.add(high == null ? null : convert(high, propertyType));
                }
                keysetPage = new DefaultKeysetPage(previousOffset, previousPageSize, new DefaultKeyset(lowest.toArray(new Serializable[lowest.size()])), new DefaultKeyset(highest.toArray(new Serializable[highest.size()])));
            }
        }
    }
    return new KeysetPageRequest(keysetPage, sort, offset, pageSize);
}