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1
9 package org.jboss.portal.server;
10
11 import java.io.IOException  ;
12 import java.io.InputStream ;
13 import java.util.Collections ;
14 import java.util.Enumeration ;
15 import java.util.HashMap ;
16 import java.util.Map ;
17 import java.util.Properties ;
18
19 import org.apache.log4j.Logger;
20 import org.jboss.portal.common.metadata.MetaData;
21 import org.jboss.portal.common.util.Tools;
22
23
30 public class AbstractObjectFactory implements ObjectFactory
31 {
32
33
34 protected Logger log = Logger.getLogger(getClass());
35
36
37 protected Map metaDataClassToObjectClass;
38
39 public AbstractObjectFactory(Properties props)
40 {
41 metaDataClassToObjectClass = Collections.synchronizedMap(new HashMap ());
42 init(props);
43 }
44
45 public AbstractObjectFactory()
46 {
47 metaDataClassToObjectClass = Collections.synchronizedMap(new HashMap ());
48 }
49
50 public AbstractObjectFactory(String resourceName)
51 {
52 metaDataClassToObjectClass = Collections.synchronizedMap(new HashMap ());
53 ClassLoader loader = Thread.currentThread().getContextClassLoader();
54 InputStream in = null;
55 try
56 {
57 in = loader.getResourceAsStream(resourceName);
58 if (in != null)
59 {
60 Properties props = new Properties ();
61 props.load(in);
62 init(props);
63 }
64 }
65 catch (IOException e)
66 {
67 log.error("Cannot load specified property file " + resourceName, e);
68 }
69 finally
70 {
71 Tools.safeClose(in);
72 }
73 }
74
75 public Object create(MetaData metaData) throws Exception
76 {
77 Class objectClazz = (Class )metaDataClassToObjectClass.get(metaData.getClass());
78 Object o = objectClazz.newInstance();
79 return o;
80 }
81
82 private void init(Properties props)
83 {
84 ClassLoader loader = Thread.currentThread().getContextClassLoader();
85 for (Enumeration en = props.propertyNames();en.hasMoreElements();)
86 {
87 String metaDataClassName = (String )en.nextElement();
88 String objectClassName = props.getProperty(metaDataClassName);
89 log.debug("Associate " + metaDataClassName + " to " + objectClassName);
90
91 try
92 {
93 Class metaDataClass = loader.loadClass(metaDataClassName);
94 log.debug("Loaded meta data class " + metaDataClassName);
95
96 Class objectClass = loader.loadClass(objectClassName);
97 log.debug("Loaded object class " + objectClassName);
98
99 metaDataClassToObjectClass.put(metaDataClass, objectClass);
100 }
101 catch (ClassNotFoundException e)
102 {
103 log.error("Cannot load class " + e);
104 }
105 }
106 }
107 }
108 |
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