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1
24 package org.ofbiz.base.util.template;
25
26 import java.util.Map  ;
27 import java.util.HashMap ;
28 import java.util.Set ;
29 import java.util.Iterator ;
30 import java.net.URL ;
31 import java.net.URLConnection ;
32 import java.io.InputStream ;
33 import java.io.InputStreamReader ;
34
35 import org.ofbiz.base.util.URLConnector;
36 import org.ofbiz.base.util.cache.UtilCache;
37 import org.ofbiz.base.location.FlexibleLocation;
38 import java.io.IOException ;
39 import java.io.Writer ;
40
41 import freemarker.ext.beans.BeansWrapper;
42 import freemarker.template.SimpleHash;
43 import freemarker.template.Template;
44 import freemarker.template.TemplateException;
45 import freemarker.template.WrappingTemplateModel;
46 import freemarker.template.Configuration;
47
48
49
60 public final class FtlTransform {
61
62 public static final String module = FtlTransform.class.getName();
63 public static UtilCache ftlTemplatesCache = new UtilCache("FtlTemplates", 0, 0);
64 private static Configuration cfg = new Configuration();
65 private static Map templateRoot = new HashMap ();
66
67 static {
68
69 WrappingTemplateModel.setDefaultObjectWrapper(BeansWrapper.getDefaultInstance());
70 try {
71 cfg.setObjectWrapper(BeansWrapper.getDefaultInstance());
72 cfg.setSetting("datetime_format", "yyyy-MM-dd HH:mm:ss.SSS");
73 } catch (TemplateException e) {
74 throw new RuntimeException ("Freemarker TemplateException", e.getCause());
75 }
76 prepOfbizRoot(templateRoot);
77 }
78
79 public FtlTransform() {
80 }
81
82 public static void transform(Writer writer, String path, Map params)
83 throws TemplateException, IOException {
84
85 Template template = (Template)ftlTemplatesCache.get(path);
86 if (template == null) {
87 template = getTemplate(path);
88 if (template != null) {
89 ftlTemplatesCache.put(path, template);
90 }
91 }
92
93 SimpleHash templateContext = new SimpleHash();
94 templateContext.putAll(templateRoot);
95 if (params != null) {
96 Set entrySet = params.entrySet();
97 Iterator iter = entrySet.iterator();
98 while (iter.hasNext()) {
99 Map.Entry entry = (Map.Entry )iter.next();
100 String key = (String )entry.getKey();
101 Object val = entry.getValue();
102 if (val != null) {
103 templateContext.put(key, val);
104 }
105 }
106 }
107 template.process(templateContext, writer);
108 return;
109 }
110
111 private static Template getTemplate( String inputUrl) throws IOException {
112
113 URL url = FlexibleLocation.resolveLocation(inputUrl);
114 URLConnection conn = URLConnector.openConnection(url);
115 InputStream in = conn.getInputStream();
116 InputStreamReader rdr = new InputStreamReader (in);
117 Template template = new Template(inputUrl, rdr, cfg);
118 template.setObjectWrapper(BeansWrapper.getDefaultInstance());
119 return template;
120 }
121
122 public static void prepOfbizRoot(Map root) {
123 FreeMarkerWorker.addAllOfbizTransforms(root);
124 }
125 }
126 |
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