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/*
* Copyright 2011 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.terminal;
import java.io.IOException;
import java.io.Serializable;
import com.vaadin.Application;
/**
* Handler for producing a response to non-UIDL requests. Handlers can be added
* to applications using {@link Application#addRequestHandler(RequestHandler)}
*/
public interface RequestHandler extends Serializable {
/**
* Handles a non-UIDL request. If a response is written, this method should
* return <code>false</code> to indicate that no more request handlers
* should be invoked for the request.
*
* @param application
* The application to which the request belongs
* @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
*/
boolean handleRequest(Application application, WrappedRequest request,
WrappedResponse response) throws IOException;
}
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