Package org.cyclos.impl.utils

Class QueryHelper

  • public class QueryHelper
extends Object
    Contains helper methods for querydsl

    • Constructor Detail

      • QueryHelper

        public QueryHelper()

    • Method Detail

      • applyExport

        public static void applyExport​(QueryParameters params)
        Prepares the given query parameters for an export operation

      • applyMaxResultsOnMap

        public static void applyMaxResultsOnMap​(QueryParameters params)
        When the given query parameter has no page size, or it is greater than max results on map, set the page size = max results on map.

      • buildPage

        public static <T> Page<T> buildPage​(SessionData sessionData,
                                    List<T> list,
                                    Integer _pageSize,
                                    Integer _currentPage)
        Builds a page from an in-memory list

      • days

        public static com.querydsl.core.types.Expression<Double> days​(com.querydsl.core.types.Path<TimeInterval> path)
        Returns an expression which represents the number of days on this interval

      • ensurePageData

        public static void ensurePageData​(QueryParameters params)

      • enumOrdinal

        public static <E extends Enum<E>> com.querydsl.core.types.dsl.NumberExpression<Integer> enumOrdinal​(com.querydsl.core.types.dsl.EnumPath<E> path)
        Returns an expression that maps each enum value to its ordinal

      • getCurrentPage

        public static int getCurrentPage​(Integer page)

      • getPageSize

        public static int getPageSize​(Integer pageSize)

      • getUserDisplay

        public static String getUserDisplay​(SessionData sessionData,
                                    Long userId,
                                    String brokerIds,
                                    String displayForManagers,
                                    String displayForOthers)
        Resolve the user display
        Parameters:
        sessionData - The logged user's session data
        userId - The user id to check
        brokerIds - The de-normalized list of broker ids of the user to check
        displayForManagers - The display for managers of the user to check
        displayForOthers - The display for others of the user to check

      • internalApplyMaxResults

        public static void internalApplyMaxResults​(SessionData sessionData,
                                           QueryParameters params)
        INTERNAL: This should only be called by InputOutputProcessingHandler

      • isUnlimited

        public static boolean isUnlimited​(QueryParameters params)

      • newQuery

        public static <Q extends QueryParameters> Q newQuery​(Class<Q> type)
        Initializes an empty query of the given type, with both current page and page size filled in

      • orderSpecifier

        public static com.querydsl.core.types.OrderSpecifier<?> orderSpecifier​(com.querydsl.core.types.EntityPath<?> path)
        Returns an ascending order specifier suitable for the given entity path. The attempted properties are ORDER_FIELDS.

      • orderSpecifier

        public static com.querydsl.core.types.OrderSpecifier<?> orderSpecifier​(com.querydsl.core.types.EntityPath<?> path,
                                                                       boolean asc)
        Returns an order specifier suitable for the given entity path. The attempted properties are ORDER_FIELDS.

      • page

        public static <RT,​Q extends com.querydsl.jpa.JPAQueryBase<?,​Q>> Page<RT> page​(Q query,
                                                                                          SessionData sessionData,
                                                                                          Integer _currentPage,
                                                                                          Integer _pageSize,
                                                                                          boolean skipTotalCount,
                                                                                          com.querydsl.core.types.Expression<RT> expr)
        Returns a result page for the given query and page parameters, using the given expression for projection

      • page

        public static <RT,​Q extends com.querydsl.jpa.JPAQueryBase<?,​Q>> Page<RT> page​(Q query,
                                                                                          SessionData sessionData,
                                                                                          QueryParameters queryParameters,
                                                                                          com.querydsl.core.types.Expression<RT> expr)
        Returns a result page for the given query and page parameters, using the given expression for projection

      • pathBuilder

        public static <T> com.querydsl.core.types.dsl.PathBuilder<T> pathBuilder​(Class<T> clazz)
        Returns a path builder for the given entity class

      • processBatch

        public static <T> long processBatch​(BaseEntityManagerHandler entityManagerHandler,
                                    Iterator<T> iterator,
                                    Consumer<T> closure)
        Processes the given iterator, by using a CacheFlusher, and invoking the given closure for each iterator element. The CloseableIterator.close() method is guaranteed to be invoked

      • useAnyParameter

        public static boolean useAnyParameter​(Collection<Object> values)
        Returns true if any of the given values should be used to filter the query. See useParameter(Object value)

      • useParameter

        public static boolean useParameter​(Object value)
        Returns whether the parameter should be used to filter the query or not. If the value is "empty" the query must not add a filter with the specified value.