com.vaadin.flow.server

Interface StreamResourceWriter

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 StreamResourceWriter
extends Serializable

Output stream consumer. Implementation of this interface should write data into OutputStream instance provided as an argument to its accept(OutputStream, VaadinSession) method.

Since:

1.0

Author:

Vaadin Ltd

Method Summary

Modifier and Type	Method and Description
void	accept(OutputStream stream, VaadinSession session) Handles stream (writes data to it) using session as a context.

Method Detail

accept

void accept(OutputStream stream,
            VaadinSession session)
     throws IOException

Handles stream (writes data to it) using session as a context.

Note that the method is not called under the session lock. It means that if implementation requires access to the application/session data then the session has to be locked explicitly.

Parameters:

stream - data output stream

session - vaadin session

Throws:

IOException - if an IO error occurred