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- /*
- * Copyright 2000-2018 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
- package com.vaadin.server;
-
- import java.io.IOException;
-
- /**
- * A specialized RequestHandler which is capable of sending session expiration
- * messages to the user.
- *
- * @since 7.1
- * @author Vaadin Ltd
- */
- public interface SessionExpiredHandler extends RequestHandler {
-
- /**
- * Called when the a session expiration has occurred and a notification
- * needs to be sent to the user. If a response is written, this method
- * should return <code>true</code> to indicate that no more
- * {@link SessionExpiredHandler} handlers should be invoked for the request.
- *
- * @param request
- * The request to handle
- * @param response
- * The response object to which a response can be written.
- * @return true if a response has been written and no further request
- * handlers should be called, otherwise false
- * @throws IOException
- * If an IO error occurred
- * @since 7.1
- */
- boolean handleSessionExpired(VaadinRequest request, VaadinResponse response)
- throws IOException;
-
- }
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