1 /* 2 * $Id: EnvironmentScopeMap.java 942404 2010-05-08 15:36:51Z apetrelli $ 3 * 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 package org.apache.tiles.request.freemarker; 22 23 import java.util.Set; 24 25 import org.apache.tiles.request.collection.ScopeMap; 26 import org.apache.tiles.request.freemarker.extractor.EnvironmentScopeExtractor; 27 28 import freemarker.core.Environment; 29 import freemarker.template.TemplateModelException; 30 31 /** 32 * <p> 33 * Private implementation of <code>Map</code> for servlet request attributes. 34 * </p> 35 * 36 * @version $Rev: 942404 $ $Date: 2010-05-09 01:36:51 +1000 (Sun, 09 May 2010) $ 37 */ 38 39 final class EnvironmentScopeMap extends ScopeMap { 40 41 /** 42 * The request object to use. 43 */ 44 private Environment request = null; 45 46 /** 47 * Constructor. 48 * 49 * @param request The request object to use. 50 */ 51 public EnvironmentScopeMap(Environment request) { 52 super(new EnvironmentScopeExtractor(request)); 53 this.request = request; 54 } 55 56 @SuppressWarnings("unchecked") 57 @Override 58 public Set<String> keySet() { 59 try { 60 return request.getKnownVariableNames(); 61 } catch (TemplateModelException e) { 62 throw new FreemarkerRequestException( 63 "Cannot get known variable names", e); 64 } 65 } 66 }