com.vaadin.flow.data.provider.CallbackDataProvider.FetchCallback API 23.1.17 | Vaadin

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com.vaadin.flow.data.provider.

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

- Method Detail
  - 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