Mercurial > dive4elements > framework
comparison artifact-database/src/main/java/de/intevation/artifactdatabase/DefaultServiceFactory.java @ 69:498bb84334d0
Added base class for services and service factories.
artifacts/trunk@595 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Fri, 22 Jan 2010 10:19:27 +0000 |
parents | |
children | 48d1a9a082c2 |
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68:541814404822 | 69:498bb84334d0 |
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1 package de.intevation.artifactdatabase; | |
2 | |
3 import org.w3c.dom.Document; | |
4 import org.w3c.dom.Node; | |
5 | |
6 import de.intevation.artifacts.ServiceFactory; | |
7 import de.intevation.artifacts.Service; | |
8 | |
9 import org.apache.log4j.Logger; | |
10 | |
11 /** | |
12 * @author Sascha L. Teichmann (sascha.teichmann@intevation.de) | |
13 */ | |
14 public class DefaultServiceFactory | |
15 implements ServiceFactory | |
16 { | |
17 private static Logger logger = | |
18 Logger.getLogger(DefaultServiceFactory.class); | |
19 | |
20 public static final String XPATH_NAME = "@name"; | |
21 public static final String XPATH_DESCRIPTION = "@description"; | |
22 public static final String XPATH_SERVICE = "@service"; | |
23 | |
24 public static final String DEFAULT_DESCRIPTION = | |
25 "No description available"; | |
26 | |
27 public static final String DEFAULT_SERVICE = | |
28 "de.intevation.artifactdatabase.DefaultService"; | |
29 | |
30 protected String name; | |
31 | |
32 protected String description; | |
33 | |
34 protected Class serviceClass; | |
35 | |
36 public DefaultServiceFactory() { | |
37 } | |
38 | |
39 public String getName() { | |
40 return name; | |
41 } | |
42 | |
43 public String getDescription() { | |
44 return description; | |
45 } | |
46 | |
47 public Service createService(Object globalContext) { | |
48 try { | |
49 Service service = (Service)serviceClass.newInstance(); | |
50 | |
51 service.setup(this, globalContext); | |
52 | |
53 return service; | |
54 } | |
55 catch (InstantiationException ie) { | |
56 logger.error(ie.getLocalizedMessage(), ie); | |
57 } | |
58 catch (IllegalAccessException iae) { | |
59 logger.error(iae.getLocalizedMessage(), iae); | |
60 } | |
61 catch (ClassCastException cce) { | |
62 logger.error(cce.getLocalizedMessage(), cce); | |
63 } | |
64 | |
65 return null; | |
66 } | |
67 | |
68 public void setup(Document config, Node factoryNode) { | |
69 | |
70 description = Config.getStringXPath( | |
71 factoryNode, XPATH_DESCRIPTION, DEFAULT_DESCRIPTION); | |
72 | |
73 name = Config.getStringXPath( | |
74 factoryNode, XPATH_NAME, toString()); | |
75 | |
76 String service = Config.getStringXPath( | |
77 factoryNode, XPATH_SERVICE, DEFAULT_SERVICE); | |
78 | |
79 try { | |
80 serviceClass = Class.forName(service); | |
81 } | |
82 catch (ClassNotFoundException cnfe) { | |
83 logger.error(cnfe.getLocalizedMessage(), cnfe); | |
84 } | |
85 | |
86 if (serviceClass == null) { | |
87 serviceClass = DefaultService.class; | |
88 } | |
89 } | |
90 } | |
91 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |