| /* |
| * 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.selection; |
| |
| 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.logger.AbstractLogEnabled; |
| import org.apache.avalon.framework.parameters.Parameters; |
| import org.apache.avalon.framework.thread.ThreadSafe; |
| |
| import org.apache.cocoon.environment.ObjectModelHelper; |
| |
| import java.util.Map; |
| |
| /** |
| * A <code>Selector</code> that matches a string against a configurable |
| * request header, e.g. "referer". |
| * |
| * <p><b>Global and local configuration</b></p> |
| * <table border="1"> |
| * <tr><td><code>header-name</code></td><td>Name of the request header to |
| * match against</td></tr> |
| * </table> |
| * |
| * @author <a href="mailto:haul@apache.org">Christian Haul</a> |
| * @author <a href="mailto:sylvain@apache.org">Sylvain Wallez</a> |
| * @version CVS $Id: HeaderSelector.java,v 1.3 2004/03/05 13:02:57 bdelacretaz Exp $ |
| */ |
| public class HeaderSelector extends AbstractLogEnabled |
| implements Configurable, ThreadSafe, Selector { |
| |
| protected String defaultName; |
| |
| public void configure(Configuration config) throws ConfigurationException { |
| // Check old name |
| this.defaultName = config.getChild("parameter-name").getValue(null); |
| if (defaultName != null) { |
| getLogger().warn("'parameter-name' is deprecated. Please use 'header-name'"); |
| } |
| // Load with new one |
| this.defaultName = config.getChild("header-name").getValue(this.defaultName); |
| } |
| |
| public boolean select(String expression, Map objectModel, Parameters parameters) { |
| // Check old name |
| String name = parameters.getParameter("parameter-name", null); |
| if (name != null) { |
| getLogger().warn("'parameter-name' is deprecated. Please use 'header-name'"); |
| } else { |
| name = this.defaultName; |
| } |
| |
| // Load with new one. |
| name = parameters.getParameter("header-name", name); |
| |
| if (name == null) { |
| getLogger().warn("No header name given -- failing."); |
| return false; |
| } |
| |
| String value = ObjectModelHelper.getRequest(objectModel).getHeader(name); |
| if (value == null) { |
| getLogger().debug("Header '" + name + "' not set -- failing."); |
| return false; |
| } |
| |
| return value.equals(expression); |
| } |
| } |