| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.cocoon.portal.event; |
| |
| import org.apache.avalon.framework.component.Component; |
| |
| /** |
| * Convert events from and into strings |
| * |
| * @author <a href="mailto:cziegeler@s-und-n.de">Carsten Ziegeler</a> |
| * @author <a href="mailto:volker.schmitt@basf-it-services.com">Volker Schmitt</a> |
| * |
| * @version CVS $Id$ |
| */ |
| public interface EventConverter extends Component { |
| |
| String ROLE = EventConverter.class.getName(); |
| |
| /** |
| * Encode an event. |
| * This is used to "activate" events using a link |
| * @param event The event to encode |
| * @return A unique string representation for this event |
| */ |
| String encode(Event event); |
| |
| /** |
| * Decode an event |
| * This is used to "activate" events using a link |
| * @param value The string representation created using {@link #encode(Event)} |
| * @return The event or null |
| */ |
| Event decode(String value); |
| |
| /** |
| * This notifies the converter that a new event processing phase starts |
| */ |
| void start(); |
| |
| /** |
| * This notifies the converter that an event processing phase ends |
| */ |
| void finish(); |
| |
| /** |
| * Returns true if events are not to be returned as request parameters |
| */ |
| boolean isMarshallEvents(); |
| } |