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1
26
27
29 package de.nava.informa.impl.basic;
30
31 import java.net.URL  ;
32 import java.util.Date ;
33 import java.util.Properties ;
34
35 import org.apache.commons.logging.Log;
36 import org.apache.commons.logging.LogFactory;
37
38 import org.jdom.Element;
39
40 import de.nava.informa.core.CategoryIF;
41 import de.nava.informa.core.ChannelBuilderException;
42 import de.nava.informa.core.ChannelBuilderIF;
43 import de.nava.informa.core.ChannelGroupIF;
44 import de.nava.informa.core.ChannelIF;
45 import de.nava.informa.core.CloudIF;
46 import de.nava.informa.core.ImageIF;
47 import de.nava.informa.core.ItemEnclosureIF;
48 import de.nava.informa.core.ItemGuidIF;
49 import de.nava.informa.core.ItemIF;
50 import de.nava.informa.core.ItemSourceIF;
51 import de.nava.informa.core.TextInputIF;
52
53
59 public class ChannelBuilder implements ChannelBuilderIF {
60
61 private static Log logger = LogFactory.getLog(ChannelBuilder.class);
62
63 public ChannelBuilder() {
64 logger.debug("New channel builder for the in-memory backend");
65 }
66
67
71 public void init(Properties props) throws ChannelBuilderException {
72 logger.debug("Initialising channel builder for in-memory backend");
73 }
74
75 public ChannelGroupIF createChannelGroup(String title) {
76 return new ChannelGroup(title);
77 }
78
79 public ChannelIF createChannel(String title) {
80 return new Channel(title);
81 }
82
83 public ChannelIF createChannel(Element channelElement, String title) {
84 return new Channel(channelElement, title);
85 }
86
87 public ItemIF createItem(ChannelIF channel, String title, String description,
88 URL link) {
89 return createItem(null, channel, title, description, link);
90 }
91
92 public ItemIF createItem(Element itemElement, ChannelIF channel, String title, String description,
93 URL link) {
94 ItemIF item = new Item(itemElement, channel, title, description, link);
95 if (channel != null) {
96 channel.addItem(item);
97 }
98 return item;
99 }
100
101
106 public ItemIF createItem(ChannelIF chan, ItemIF oldItem)
107 {
108 return createItem(null, chan, oldItem.getTitle(), oldItem.getDescription(), oldItem.getLink());
109 }
110
111 public ImageIF createImage(String title, URL location, URL link) {
112 return new Image(title, location, link);
113 }
114
115 public TextInputIF createTextInput(String title, String description, String name, URL link) {
116 return new TextInput(title, description, name, link);
117 }
118
119 public CloudIF createCloud(String domain, int port, String path, String registerProcedure, String protocol) {
120 logger.info("ChannelBuilder is creating a Basic Cloud");
121 return new Cloud(domain, port, path, registerProcedure, protocol);
122 }
123
124 public ItemSourceIF createItemSource(ItemIF item, String name, String location, Date timestamp) {
125 return new ItemSource(item, name, location, timestamp);
126 }
127
128 public ItemEnclosureIF createItemEnclosure(ItemIF item, URL location, String type, int length) {
129 return new ItemEnclosure(item, location, type, length);
130 }
131
132 public ItemGuidIF createItemGuid(ItemIF item, String location, boolean permaLink) {
133 return new ItemGuid(item, location, permaLink);
134 }
135
136 public CategoryIF createCategory(CategoryIF parent, String title) {
137 CategoryIF cat = new Category(title);
138 if (parent != null) {
139 parent.addChild(cat);
140 }
141 return cat;
142 }
143
144
149 public void close() throws ChannelBuilderException {
150 logger.debug("Closing channel builder for in-memory backend");
151 }
152
153 public void beginTransaction() throws ChannelBuilderException
154 {
155 logger.debug("No-op beginTransaction for in-memory backend");
156 }
157
158 public void endTransaction() throws ChannelBuilderException
159 {
160 logger.debug("No-op endTransaction for in-memory backend");
161 }
162
163 public void update(Object obj)
164 {
165 logger.debug("No-op update for in-memory backend");
166 }
167 }
168 |
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