| /* |
| * 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.commons.jxpath.servlet; |
| |
| import java.util.Enumeration; |
| |
| import javax.servlet.jsp.PageContext; |
| |
| /** |
| * A lightweight wrapper for {@link PageContext} that restricts access |
| * to attributes of the "page" scope. This object is needed so that |
| * XPath "foo" would lookup the attribute "foo" in all scopes, while |
| * "$page/foo" would only look in the "page" scope. |
| * |
| * @author Dmitri Plotnikov |
| * @version $Revision$ $Date$ |
| */ |
| public class PageScopeContext { |
| private PageContext pageContext; |
| |
| /** |
| * Create a new PageScopeContext. |
| * @param pageContext base |
| */ |
| public PageScopeContext(PageContext pageContext) { |
| this.pageContext = pageContext; |
| } |
| |
| /** |
| * Returns attributes of the pageContext declared in the "page" scope. |
| * @return Enumeration of attribute names |
| */ |
| public Enumeration getAttributeNames() { |
| return pageContext.getAttributeNamesInScope(PageContext.PAGE_SCOPE); |
| } |
| |
| /** |
| * Get the value of the specified attribute. |
| * @param attribute name |
| * @return Object |
| */ |
| public Object getAttribute(String attribute) { |
| return pageContext.getAttribute(attribute, PageContext.PAGE_SCOPE); |
| } |
| |
| /** |
| * Set the specified attribute. |
| * @param attribute to set |
| * @param value to set |
| */ |
| public void setAttribute(String attribute, Object value) { |
| pageContext.setAttribute(attribute, value, PageContext.PAGE_SCOPE); |
| } |
| } |