| /* |
| * 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.lenya.cms.cocoon.components.modules.input; |
| |
| import java.util.Map; |
| |
| import org.apache.avalon.framework.configuration.Configuration; |
| import org.apache.avalon.framework.configuration.ConfigurationException; |
| import org.apache.cocoon.components.modules.input.AbstractInputModule; |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| import org.apache.cocoon.environment.Request; |
| |
| /** |
| * <p>The linking module is a utility to add parameters to link URLs, |
| * depending on request parameters. Supported attributes:</p> |
| * <ul> |
| * <li><code>rev</code> - inserts the parameter <code>,rev=...</code> |
| * if a request parameter <code>lenya.revision</code> is present.</li> |
| * </ul> |
| */ |
| public class LinkingModule extends AbstractInputModule { |
| |
| protected static final String ATTRIBUTE_REVISION = "rev"; |
| protected static final String REQUEST_PARAM_REVISION = "lenya.revision"; |
| |
| public Object getAttribute(String name, Configuration modeConf, Map objectModel) throws ConfigurationException { |
| |
| if (name.equals(ATTRIBUTE_REVISION)) { |
| Request request = ObjectModelHelper.getRequest(objectModel); |
| String revision = request.getParameter(REQUEST_PARAM_REVISION); |
| if (revision != null) { |
| return ",rev=" + revision; |
| } |
| else { |
| return ""; |
| } |
| } |
| else { |
| throw new ConfigurationException("The attribute [" + name + "] is not supported."); |
| } |
| } |
| |
| |
| } |