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1   /*
2    * Copyright 2004 Sun Microsystems, Inc.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   *
16   */
17  package com.sun.syndication.io.impl;
18  
19  import com.sun.syndication.feed.rss.Description;
20  import com.sun.syndication.feed.rss.Item;
21  import com.sun.syndication.feed.rss.Channel;
22  import com.sun.syndication.io.FeedException;
23  import org.jdom.Element;
24  import org.jdom.Namespace;
25  
26  import java.util.List;
27  
28  /***
29   * Feed Generator for RSS 1.0
30   * <p/>
31   *
32   * @author Elaine Chien
33   *
34   */
35  
36  public class RSS10Generator extends RSS090Generator {
37      private static final String RSS_URI = "http://purl.org/rss/1.0/";
38      private static final Namespace RSS_NS = Namespace.getNamespace(RSS_URI);
39  
40      public RSS10Generator() {
41          super("rss_1.0");
42      }
43  
44      protected RSS10Generator(String feedType) {
45          super(feedType);
46      }
47  
48      protected Namespace getFeedNamespace() {
49          return RSS_NS;
50      }
51  
52      protected void populateChannel(Channel channel,Element eChannel) {
53          super.populateChannel(channel,eChannel);
54          List items = channel.getItems();
55          if (items.size()>0) {
56              Element eItems = new Element("items",getFeedNamespace());
57              Element eSeq = new Element("Seq",getRDFNamespace());
58              for (int i=0;i<items.size();i++) {
59                  Item item = (Item) items.get(i);
60                  Element eLi = new Element("li",getRDFNamespace());
61                  String link = item.getLink();
62                  if (link!=null) {
63                      eLi.setAttribute("resource",link);
64                  }
65                  eSeq.addContent(eLi);
66              }
67              eItems.addContent(eSeq);
68              eChannel.addContent(eItems);
69          }
70      }
71  
72      protected void populateItem(Item item,Element eItem) {
73          super.populateItem(item,eItem);
74          String link = item.getLink();
75          if (link!=null) {
76              eItem.setAttribute("about",link,getRDFNamespace());
77          }
78          Description description = item.getDescription();
79          if (description!=null) {
80              eItem.addContent(generateSimpleElement("description",description.getValue()));
81          }
82      }
83  
84      protected void checkItemsConstraints(Element parent) throws FeedException {
85      }
86  
87      protected void checkItemConstraints(Element eItem) throws FeedException {
88          super.checkItemConstraints(eItem);
89          checkLength(eItem,"description", 0, 500);
90      }
91  
92  }
93