Package com.vaadin.flow.data.provider

Interface CallbackDataProvider.FetchCallback<T,F>

Type Parameters:

T - the type of the items to fetch

F - the type of the optional filter in the query, Void if filtering is not supported

All Superinterfaces:

Serializable

Enclosing class:

CallbackDataProvider<T,F>

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 static interface CallbackDataProvider.FetchCallback<T,F>
extends Serializable

Callback interface for fetching a stream of items from a backend based on a query.

Method Summary

Modifier and Type	Method	Description
Stream<T>	fetch(Query<T,F> query)	Fetches a stream of items based on a query.

Method Details

fetch

Stream<T> fetch(Query<T,F> query)

Fetches a stream of items based on a query. The query defines the paging of the items to fetch through Query.getOffset() and Query.getLimit(), the sorting through Query.getSortOrders() and optionally also any filtering to use through Query.getFilter().

Parameters:

query - the query that defines which items to fetch

Returns:

a stream of items