com.vaadin.flow.spring.data

Interface VaadinSpringDataHelpers

All Superinterfaces:

Serializable

public interface VaadinSpringDataHelpers
extends Serializable

Contains helper methods to work with Spring Data based back-ends and Vaadin components.

Method Summary

Modifier and Type	Method and Description
static <T> com.vaadin.flow.data.provider.CallbackDataProvider.FetchCallback<T,Void>	fromPagingRepository(org.springframework.data.repository.PagingAndSortingRepository<T,?> repo) Binds all items from a given paging Spring Data repository to Grid.
static org.springframework.data.domain.Sort	toSpringDataSort(com.vaadin.flow.data.provider.Query<?,?> vaadinQuery) Translates given Query object from a Vaadin component to Spring Data Sort object.
static org.springframework.data.domain.PageRequest	toSpringPageRequest(com.vaadin.flow.data.provider.Query<?,?> vaadinQuery) Creates a Spring Data PageRequest based on the Vaadin Query object.

Method Detail

toSpringDataSort

static org.springframework.data.domain.Sort toSpringDataSort(com.vaadin.flow.data.provider.Query<?,?> vaadinQuery)

Translates given Query object from a Vaadin component to Spring Data Sort object.

Can be used as a helper when making a lazy data binding from a Vaadin component to a Spring Data based back-end. The method expects Vaadin sort data to include the property name.

Parameters:

vaadinQuery - the Vaadin Query object passed by the component

Returns:

the Sort object that can be passed for Spring Data based back-end

toSpringPageRequest

static org.springframework.data.domain.PageRequest toSpringPageRequest(com.vaadin.flow.data.provider.Query<?,?> vaadinQuery)

Creates a Spring Data PageRequest based on the Vaadin Query object. Takes sort into account, based on properties.

Parameters:

vaadinQuery - the query object from Vaadin component

Returns:

a PageRequest that can be passed for Spring Data based back-end

fromPagingRepository

static <T> com.vaadin.flow.data.provider.CallbackDataProvider.FetchCallback<T,Void> fromPagingRepository(org.springframework.data.repository.PagingAndSortingRepository<T,?> repo)

Binds all items from a given paging Spring Data repository to Grid. Usage example:

grid.setItems(fromPagingRepository(repo));

Type Parameters:

T - the type of items to bind

Parameters:

repo - the repository where the results should be fetched from

Returns:

the FetchCallback that makes the lazy binding to Grid.