Package org.vaadin.firitin.components.upload

Interface UploadFileHandler.CallbackFileHandler

All Superinterfaces:

Serializable

Enclosing class:

UploadFileHandler

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 UploadFileHandler.CallbackFileHandler
extends Serializable

An interface accepting file uploads.

Method Summary

Modifier and Type	Method	Description
com.vaadin.flow.server.Command	handleFile(InputStream content, UploadFileHandler.FileDetails metaData)	This method is called by the framework when a new file is being received.

Method Details

handleFile

com.vaadin.flow.server.Command handleFile(InputStream content,
 UploadFileHandler.FileDetails metaData)
                                   throws IOException

This method is called by the framework when a new file is being received.

You can read the file contents from the given InputStream.

Note, that this method is not executed in the UI thread. If you want to modify the UI from it, by sure to use UI.access (and possibly Push annotation) to handle locking properly.

Parameters:

content - the file content

metaData - details about the file being updated

Returns:

a task to be executed later in UI thread once the file upload is completed

Throws:

IOException - like you always do with streams