Interface Sorter<TT>

Type Parameters:

TT - Entity Type

Example:

@Named
@ViewScoped
public class SortingDataModel implements Serializable {
    @Inject
    @Getter
    JPALazyDataModel<UserEntity> userModel;

    @PostConstruct
    void initialize() {
        userModel.initialize(builder -> builder.sorter((sortData, cb, root) ->
                // Example: add an ascending zip code-based sort order
                sortData.applicationSort(UserEntity_.zipCode.getName(),
                                var -> cb.asc(root.get(UserEntity_.zipCode)))
                        // Example: if user requests zip code-based sort order,
                        // add address-based sort order to mirror the zip code-based sort order
                        .applicationSort(UserEntity_.zipCode.getName(), UserEntity_.address.getName(), sortData,
                                () -> cb.asc(root.get(UserEntity_.address)),
                                () -> cb.desc(root.get(UserEntity_.address)), () -> null)).build());
    }
}

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface Sorter<TT>

Sorter Hook

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	Sorter.MergedSortOrder	Sort order requested by the UI lives in Sorter.MergedSortOrder.requestedSortMeta, Sort order requested by the application lives in Sorter.MergedSortOrder.applicationSort Only one can exist, the other will always be null.
static class	Sorter.SortData	Manipulates sort criteria requested from the UI and possibly adds or replaces it with application-based sort criteria

Method Summary

Modifier and Type	Method	Description
void	sort(Sorter.SortData sortData, CriteriaBuilder cb, Root<TT> root)	Hook for sort criteria manipulation.

Method Details

sort

void sort(Sorter.SortData sortData,
 CriteriaBuilder cb,
 Root<TT> root)

Hook for sort criteria manipulation. Application can inspect or remove elements from the Sorter.SortData.sortOrder map and add your own sort order via Sorter.SortData.applicationSort(String, Function) method

Parameters:

sortData - merged sort criteria

cb - CriteriaBuilder

root - Root