001/* 002 * Copyright 2023 Web-Legacy 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.apache.tiles.request.jakarta.servlet.extractor; 017 018import java.util.Enumeration; 019 020import org.apache.tiles.request.attribute.AttributeExtractor; 021 022import jakarta.servlet.ServletContext; 023 024/** 025 * Extract attributes from application scope. 026 * 027 * <p>Copied from Apache tiles-request-servlet 1.0.7 and adapted for 028 * Jakarta EE 9.</p> 029 */ 030public class ApplicationScopeExtractor implements AttributeExtractor { 031 032 /** 033 * The servlet context. 034 */ 035 private ServletContext context; 036 037 /** 038 * Constructor. 039 * 040 * @param context The servlet context. 041 */ 042 public ApplicationScopeExtractor(ServletContext context) { 043 this.context = context; 044 } 045 046 /** 047 * Sets a value for the given key. 048 * 049 * @param name The key of the attribute. 050 * @param value The value of the attribute. 051 */ 052 @Override 053 public void setValue(String name, Object value) { 054 context.setAttribute(name, value); 055 } 056 057 /** 058 * Removes an attribute. 059 * 060 * @param name The key of the attribute to remove. 061 */ 062 @Override 063 public void removeValue(String name) { 064 context.removeAttribute(name); 065 } 066 067 /** 068 * The enumeration of the keys of the stored attributes. 069 * 070 * @return The keys. 071 */ 072 @Override 073 public Enumeration<String> getKeys() { 074 return context.getAttributeNames(); 075 } 076 077 /** 078 * Returns the value of the attribute with the given key. 079 * 080 * @param key The key of the attribute. 081 * 082 * @return The value. 083 */ 084 @Override 085 public Object getValue(String key) { 086 return context.getAttribute(key); 087 } 088}