| /* |
| * 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.jsecurity.web.attr; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| |
| /** |
| * @author Les Hazlewood |
| * @since 0.2 |
| */ |
| public class RequestParamAttribute<T> extends AbstractWebAttribute<T> { |
| |
| //TODO - complete JavaDoc |
| |
| private static final Log log = LogFactory.getLog(RequestParamAttribute.class); |
| |
| public RequestParamAttribute() { |
| setMutable(false); |
| setCheckRequestParams(false); |
| } |
| |
| public RequestParamAttribute(String name) { |
| super(name); |
| setMutable(false); |
| setCheckRequestParams(false); |
| } |
| |
| protected T onRetrieveValue(ServletRequest request, ServletResponse response) { |
| return getFromRequestParam(request); |
| } |
| |
| protected void onStoreValue(T value, ServletRequest request, ServletResponse response) { |
| throw new UnsupportedOperationException("RequestParamStores are read-only."); |
| } |
| |
| public void removeValue(ServletRequest request, ServletResponse response) { |
| //no op - can't alter request attributes |
| if (log.isWarnEnabled()) { |
| String msg = "Asked to remove WebAttribute value. A " + getClass().getName() + " implementation " + |
| "cannot remove values from the request params."; |
| log.warn(msg); |
| } |
| } |
| } |