| /* |
| * 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 freemarker.ext.servlet; |
| |
| import java.util.ArrayList; |
| import java.util.Enumeration; |
| |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import freemarker.template.ObjectWrapper; |
| import freemarker.template.ObjectWrapperAndUnwrapper; |
| import freemarker.template.SimpleCollection; |
| import freemarker.template.TemplateCollectionModel; |
| import freemarker.template.TemplateHashModelEx; |
| import freemarker.template.TemplateModel; |
| import freemarker.template.TemplateModelException; |
| |
| /** |
| * TemplateHashModel wrapper for a HttpServletRequest attributes. |
| */ |
| public final class HttpRequestHashModel implements TemplateHashModelEx { |
| private final HttpServletRequest request; |
| private final HttpServletResponse response; |
| private final ObjectWrapper wrapper; |
| |
| /** |
| * @param wrapper |
| * Should be an {@link ObjectWrapperAndUnwrapper}, or else some features might won't work properly. (It's |
| * declared as {@link ObjectWrapper} only for backward compatibility.) |
| */ |
| public HttpRequestHashModel( |
| HttpServletRequest request, ObjectWrapper wrapper) { |
| this(request, null, wrapper); |
| } |
| |
| public HttpRequestHashModel( |
| HttpServletRequest request, HttpServletResponse response, |
| ObjectWrapper wrapper) { |
| this.request = request; |
| this.response = response; |
| this.wrapper = wrapper; |
| } |
| |
| @Override |
| public TemplateModel get(String key) throws TemplateModelException { |
| return wrapper.wrap(request.getAttribute(key)); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return !request.getAttributeNames().hasMoreElements(); |
| } |
| |
| @Override |
| public int size() { |
| int result = 0; |
| for (Enumeration enumeration = request.getAttributeNames(); enumeration.hasMoreElements(); ) { |
| enumeration.nextElement(); |
| ++result; |
| } |
| return result; |
| } |
| |
| @Override |
| public TemplateCollectionModel keys() { |
| ArrayList keys = new ArrayList(); |
| for (Enumeration enumeration = request.getAttributeNames(); enumeration.hasMoreElements(); ) { |
| keys.add(enumeration.nextElement()); |
| } |
| return new SimpleCollection(keys.iterator()); |
| } |
| |
| @Override |
| public TemplateCollectionModel values() { |
| ArrayList values = new ArrayList(); |
| for (Enumeration enumeration = request.getAttributeNames(); enumeration.hasMoreElements(); ) { |
| values.add(request.getAttribute((String) enumeration.nextElement())); |
| } |
| return new SimpleCollection(values.iterator(), wrapper); |
| } |
| |
| public HttpServletRequest getRequest() { |
| return request; |
| } |
| |
| public HttpServletResponse getResponse() { |
| return response; |
| } |
| |
| public ObjectWrapper getObjectWrapper() { |
| return wrapper; |
| } |
| } |