001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.request;
018
019/**
020 * A loggable request handler is a {@link IRequestHandler} that is capable of delivering log data.
021 * Implementations of this interface should collect data before or from
022 * {@link #detach(IRequestCycle)}. {@link #getLogData()} will never be called before the handler is
023 * detached.
024 * 
025 * @author Emond Papegaaij
026 */
027public interface ILoggableRequestHandler extends IRequestHandler
028{
029        /**
030         * Returns the collected log data for this request handler and should never throw an exception.
031         * This method is never called before the request handler is detached.
032         * 
033         * @return The collected log data.
034         */
035        ILogData getLogData();
036}