[jboss-user] [Microcontainer] - Re: Use of JBoss MC Pojo from in distributed env

[alesj]

"manik.surtani at jboss.com" wrote : One way to do this - and this would involve extending or modifying the MC - is to replace whatever backing container the MC uses to store beans it creates (probably a Map) with an Infinispan Cache.
You can easily achieve this with the bean implementing KernelRegistryPlugin.


  | public interface KernelRegistryPlugin
  | {
  |    /**
  |     * Get a registration
  |     * 
  |     * @param name the name of the object
  |     * @return the registration
  |     * @throws IllegalArgumentException for a null name
  |     */
  |    KernelRegistryEntry getEntry(Object name);
  | }
  | 

Every such bean becomes part of MC registry,
and as such it's always "asked" if it knows how to provide a bean per name parameter.

e.g. JNDI KRP


  | public class JNDIKernelRegistryPlugin implements KernelRegistryPlugin
  | {
  |    private Hashtable<?,?> properties;
  |    private Context context;
  | 
  |    public void setProperties(Hashtable<?,?> properties)
  |    {
  |       this.properties = properties;
  |    }
  | 
  |    public void create() throws NamingException
  |    {
  |       if (properties != null)
  |          context = new InitialContext(properties);
  |       else
  |          context = new InitialContext();
  |    }
  | 
  |    public void destroy() throws NamingException
  |    {
  |       if (context != null)
  |          context.close();
  |       context = null;
  |    }
  | 
  |    public KernelRegistryEntry getEntry(Object name)
  |    {
  |       try
  |       {
  |          Object target = context.lookup(name.toString());
  |          if (target != null)
  |             return new AbstractKernelRegistryEntry(name, target);
  |       }
  |       catch (NamingException e)
  |       {
  |       }
  |       return null;
  |    }
  | }
  | 

In Infinispan's case you would simply replace context with cache.

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