Package com.vaadin.flow.server.streams

Interface UploadCompleteCallback

All Superinterfaces:

Serializable

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 UploadCompleteCallback
extends Serializable

Callback for validating a fully received upload before it is delivered, used with AbstractUploadHandler.validateComplete(UploadCompleteCallback).

Call UploadEvent.reject(String) to refuse the upload. See UploadValidator.validateComplete(UploadEvent, UploadContent) for the phase semantics; this runs only after the whole upload has been received, so it cannot abort reading early.

Since:

25.3

Method Summary

Modifier and Type	Method	Description
void	validate(UploadEvent event, UploadContent content)	Validates the fully received upload, rejecting it via UploadEvent.reject(String) if it must not be delivered.

Method Details

validate

void validate(UploadEvent event,
 UploadContent content)
       throws IOException

Validates the fully received upload, rejecting it via UploadEvent.reject(String) if it must not be delivered.

Parameters:

event - the current upload

content - handle to the received content; only valid for the duration of the call

Throws:

IOException - if validation fails; treated as a transfer error