Class StreamRequestHandler

java.lang.Object
com.vaadin.flow.server.communication.StreamRequestHandler
All Implemented Interfaces:
RequestHandler, Serializable

public class StreamRequestHandler extends Object implements RequestHandler
Handles StreamResource and StreamReceiver instances registered in VaadinSession.

For internal use only. May be renamed or removed in a future release.

Since:
1.0
Author:
Vaadin Ltd
See Also:
  • Field Details

  • Constructor Details

    • StreamRequestHandler

      public StreamRequestHandler()
      Create a new stream request handler with the default StreamReceiverHandler.
    • StreamRequestHandler

      protected StreamRequestHandler(StreamReceiverHandler receiverHandler)
  • Method Details

    • handleRequest

      public boolean handleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response) throws IOException
      Description copied from interface: RequestHandler
      Called when a request needs to be handled. If a response is written, this method should return true to indicate that no more request handlers should be invoked for the request.

      Note that request handlers by default do not lock the session. If you are using VaadinSession or anything inside the VaadinSession you must ensure the session is locked. This can be done by extending SynchronizedRequestHandler or by using VaadinSession.accessSynchronously(Command) or UI.accessSynchronously(Command).

      Specified by:
      handleRequest in interface RequestHandler
      Parameters:
      session - The session for the request
      request - The request to handle
      response - The response object to which a response can be written.
      Returns:
      true if a response has been written and no further request handlers should be called, otherwise false
      Throws:
      IOException - If an IO error occurred
    • generateURI

      public static String generateURI(String name, String id)
      Generates URI string for a dynamic resource using its id and name. [0] UIid, [1] sec key, [2] name
      Parameters:
      name - file or attribute name to use in path
      id - unique resource id
      Returns:
      generated URI string
    • getRequestSizeMax

      protected long getRequestSizeMax()
      Returns maximum request size for upload. Override this to increase the default. Defaults to -1 (no limit).
      Returns:
      maximum request size for upload
    • getFileSizeMax

      protected long getFileSizeMax()
      Returns maximum file size for upload. Override this to increase the default. Defaults to -1 (no limit).
      Returns:
      maximum file size for upload
    • getFileCountMax

      protected long getFileCountMax()
      Returns maximum file part count for upload. Override this to increase the default. Defaults to 10000.
      Returns:
      maximum file part count for upload