JBossDeveloper

Ngh. Of course. Thanks.

Did you BTW come to any consensus regarding the caching? For some reason I seem to get different instances of the resource loader (my cache-map is always empty even if the scope is application). Would I have to inject the data from somewhere else?

I would use the hibernate query cache - this is exactly the kind of scenario its designed for - and set the query cacheable e.g. for 15 minutes.

It would be nice if someone would like to post a complete example for this including caching.

I blogged about this - see further up the topic. You should cache using the Hibernate 2nd level cache.

Yep. Query hints for enabling a 10 minute cache worked out fine.

I'm a bit puzzled as to why my custom resource loader isn't being called for anything other than page resource bundles. I'm using Seam 2.0.0.GA with Java 6:

components.xml

 ...
 <component name="org.jboss.seam.core.resourceLoader">
 <property name="bundleNames">
 <value>messages</value>
 <value>labels</value>
 <value>buttons</value>
 <value>content</value>
 <value>validation</value>
 </property>
 </component>
 ...

@Scope(ScopeType.STATELESS)
@BypassInterceptors
@Install(true)
@Name("org.jboss.seam.core.resourceLoader")
public class DBResourceLoader extends org.jboss.seam.core.ResourceLoader {

 private Log log = Logging.getLog(DBResourceLoader.class) ;

 /** The serialVersionUID field */
 private static final long serialVersionUID = -7063164147487452966L;

 // Redefine how we load a resource bundle
 @Override
 public ResourceBundle loadBundle(String bundleName) {
 log.debug("Searching database resource loader for bundle #0", bundleName) ;
 return ResourceBundle.getBundle(bundleName, Locale.instance(), Thread.currentThread().getContextClassLoader(), DBControl.INSTANCE);
 }

}

95 protected Object handleGetObject(String key)
96 {
97 List<java.util.ResourceBundle> pageBundles = getPageResourceBundles();
98 for (java.util.ResourceBundle pageBundle : pageBundles)
99 {
100 try
101 {
102 return interpolate(pageBundle.getObject(key));
103 }
104 catch (MissingResourceException mre) {}
105 }
106
107 for (java.util.ResourceBundle littleBundle : getBundlesForCurrentLocale())
108 {
109 try
110 {
111 return interpolate( littleBundle.getObject(key) );
112 }
113 catch (MissingResourceException mre) {}
114 }
115
116 return null; // superclass is responsible for throwing MRE
117 }

Ok I've solved that problem. Now I have a problem with seam caching resource bundles.

I'm using Java 6 to do my resource bundle caching, so I want to remove, disable or override the following method in org.jboss.seam.core.SeamResourceBundle.java:

 private List<java.util.ResourceBundle> getBundlesForCurrentLocale()
 {
 Locale instance = org.jboss.seam.core.Locale.instance();
 List<ResourceBundle> bundles = bundleCache.get(instance);
 if ( bundles==null )
 {
 bundles = loadBundlesForCurrentLocale();
 bundleCache.put(instance, bundles);
 }
 return bundles;

 }

@Scope(ScopeType.STATELESS)
@BypassInterceptors
@Install(true)
@Name("org.jboss.seam.core.resourceLoader")
public class DBResourceLoader extends ResourceLoader {

 private Log log = Logging.getLog(DBResourceLoader.class) ;

 /** The serialVersionUID field */
 private static final long serialVersionUID = -7063164147487452966L;

 // Redefine how we load a resource bundle
 @Override
 public ResourceBundle loadBundle(String bundleName) {
 try {
 log.debug("Searching database resource loader for bundle #0", bundleName) ;
 return ResourceBundle.getBundle(bundleName, Locale.instance(), Thread.currentThread().getContextClassLoader(), DBControl.INSTANCE);
 } catch (MissingResourceException ex) {
 log.debug("Missing resource for bundleName #0", bundleName) ;
 return null;
 }

 }

}

Pete, I would really suggest using the Hibernate 2nd level cache for caching, it is a simple solution.