1 /**
2 * Copyright (C) 2005-2009 Alfresco Software Limited.
3 *
4 * This file is part of the Spring Surf Extension project.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.springframework.extensions.webscripts;
20
21 import java.util.List;
22
23 import org.springframework.extensions.surf.util.ISO8601DateFormat;
24
25 import freemarker.template.TemplateDateModel;
26 import freemarker.template.TemplateMethodModelEx;
27 import freemarker.template.TemplateModelException;
28 import freemarker.template.TemplateScalarModel;
29
30 /**
31 * NOTE: sourced from org.alfresco.repo.template.ISO8601DateFormatMethod.
32 *
33 * @author David Caruana
34 * @author Kevin Roast
35 *
36 * Custom FreeMarker Template language method.
37 * <p>
38 * Render Date to ISO8601 format.<br>
39 * Or parse ISO6801 format string date to a Date object.
40 * <p>
41 * Usage: xmldate(Date date)
42 * xmldate(String date)
43 */
44 public class ISO8601DateFormatMethod implements TemplateMethodModelEx
45 {
46 /**
47 * @see freemarker.template.TemplateMethodModel#exec(java.util.List)
48 */
49 public Object exec(List args) throws TemplateModelException
50 {
51 Object result = null;
52
53 if (args.size() == 1)
54 {
55 Object arg0 = args.get(0);
56 if (arg0 instanceof TemplateDateModel)
57 {
58 result = ISO8601DateFormat.format(((TemplateDateModel)arg0).getAsDate());
59 }
60 else if (arg0 instanceof TemplateScalarModel)
61 {
62 result = ISO8601DateFormat.parse(((TemplateScalarModel)arg0).getAsString());
63 }
64 }
65
66 return result != null ? result : "";
67 }
68 }