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