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1 package info.magnolia.cms.beans.config;
2
3 import info.magnolia.cms.beans.runtime.TemplateRenderer;
4 import info.magnolia.cms.core.Content;
5 import info.magnolia.cms.core.ItemType;
6 import info.magnolia.cms.util.ClassUtil;
7 import info.magnolia.cms.util.FactoryUtil;
8
9 import java.text.MessageFormat  ;
10 import java.util.Collection ;
11 import java.util.HashMap ;
12 import java.util.Iterator ;
13 import java.util.Map ;
14
15 import org.apache.commons.lang.StringUtils;
16
17
18
22 public class TemplateRendererManager extends ObservedManager {
23
24 private static final String ND_RENDERER = "renderer";
25
26 private static final String ND_TYPE = "type";
27
28 private Map renderers = new HashMap ();
29
30
33 public static TemplateRendererManager getInstance() {
34 return (TemplateRendererManager) FactoryUtil.getSingleton(TemplateRendererManager.class);
35 }
36
37
40 protected void onRegister(Content node) {
41 Collection list = node.getChildren(ItemType.CONTENTNODE);
42 for (Iterator iter = list.iterator(); iter.hasNext();) {
43 Content tr = (Content) iter.next();
44 String type = tr.getNodeData(ND_TYPE).getString();
45 String rendererClass = tr.getNodeData(ND_RENDERER).getString();
46
47 if (StringUtils.isEmpty(type)) {
48 type = tr.getName();
49 }
50
51 if (StringUtils.isBlank(type) || StringUtils.isBlank(rendererClass)) {
52 log.warn("Can't register template render at {}, type=\"{}\" renderer=\"{}\"", new Object []{
53 tr.getHandle(),
54 type,
55 rendererClass});
56 continue;
57 }
58
59 TemplateRenderer renderer;
60
61 try {
62 renderer = (TemplateRenderer) ClassUtil.newInstance(rendererClass);
63 }
64 catch (Exception e) {
65 log.warn(
66
67 MessageFormat.format(
68 "Can't register template render at {0}, type=\"{1}\" renderer=\"{2}\" due to a {3} exception: {4}",
69 new Object []{tr.getHandle(), type, rendererClass, e.getClass().getName(), e.getMessage()}), e);
70 continue;
71 }
72
73 if (log.isDebugEnabled()) {
74 log.debug("Registering template render [{}] for type {}", rendererClass, type);
75 }
76 registerTemplateRenderer(type, renderer);
77 }
78
79 }
80
81
84 protected void onClear() {
85 this.renderers.clear();
86 }
87
88 public void registerTemplateRenderer(String type, TemplateRenderer instance) {
89 synchronized (renderers) {
90 renderers.put(type, instance);
91 }
92 }
93
94 public TemplateRenderer getRenderer(String type) {
95 return (TemplateRenderer) renderers.get(type);
96 }
97
98 }
99 |
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