| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed 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.matching; |
| |
| import org.apache.avalon.framework.configuration.Configurable; |
| import org.apache.avalon.framework.configuration.Configuration; |
| import org.apache.avalon.framework.configuration.ConfigurationException; |
| import org.apache.avalon.framework.parameters.Parameters; |
| |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| |
| import java.util.Map; |
| |
| /** |
| * Matches a request parameter against a regular expression. |
| * |
| * <p><b>Global and local configuration</b></p> |
| * <table border="1"> |
| * <tr><td><code>parameter-name</code></td><td>Name of the request parameter to |
| * match against</td></tr> |
| * </table> |
| * |
| * @version $Id$ |
| */ |
| public class RegexpRequestParameterMatcher extends AbstractRegexpMatcher |
| implements Configurable |
| { |
| private String defaultParam; |
| |
| public void configure(Configuration config) throws ConfigurationException { |
| this.defaultParam = config.getChild("parameter-name").getValue(null); |
| } |
| |
| protected String getMatchString(Map objectModel, Parameters parameters) { |
| |
| String paramName = parameters.getParameter("parameter-name", this.defaultParam); |
| if (paramName == null) { |
| getLogger().warn("No parameter name given. FAILING"); |
| return null; |
| } |
| |
| String result = ObjectModelHelper.getRequest(objectModel).getParameter(paramName); |
| if (result == null) { |
| getLogger().debug("Parameter '" + paramName + "' not set."); |
| } |
| |
| return result; |
| } |
| } |