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> |
|---|---|
| date | Fri, 22 Jan 2010 10:19:27 +0000 |
| parents | |
| children | 48d1a9a082c2 |
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| 68:541814404822 | 69:498bb84334d0 |
|---|---|
| 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 : |