    001// Copyright 2030 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007// http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.internal.services;
    016
    017import org.apache.tapestry5.ComponentResources;
    018import org.apache.tapestry5.EventContext;
    019
    020import java.io.IOException;
    021
    022/**
    023 * Responsible for handling the response for a page called with an unknown activation context when the check itself is
    024 * enabled.
    025 * The default implementation is to respond with a 404 NOT FOUND.
    026 *
    027 * @see http://issues.apache.org/jira/browse/TAP5-2070
    028 * @see org.apache.tapestry5.annotations.UnknownActivationContextCheck
    029 * @see org.apache.tapestry5.services.HttpError
    030 *
    031 * @since 5.4
    032 */
    033public interface UnknownActivationContextHandler
    034{
    035    /**
    036     * Answer the client in the case of a request coming in with an unknown activation context.
    037     */
    038    @SuppressWarnings("unchecked")
    039    void handleUnknownContext(ComponentResources pageResources, EventContext activationContext)
    040                            throws IOException;
    041}