package org.webslinger.resolver;

 import java.util.HashMap;

 import java.util.Map;

 public final class ThreadsLookup extends BasicLookup {

     public static final ThreadsLookup LOOKUP = new ThreadsLookup();

     private ThreadsLookup() {

         resolver.addFetcher("current-thread", new BeanResolver.BeanGet<ObjectLookup, Thread>("current-thread", Thread.class) {

             public Thread getValue(ObjectLookup object) {

                 return Thread.currentThread();

             }

         });

         resolver.addFetcher("top-group", new BeanResolver.BeanGet<ObjectLookup, ThreadGroup>("threads", ThreadGroup.class) {

             public ThreadGroup getValue(ObjectLookup object) {

                 ThreadGroup group = Thread.currentThread().getThreadGroup();

                 while (group.getParent() != null) {

                     group = group.getParent();

                 }

                 return group;

             }

         });

         resolver.addFetcher("yield", new BeanResolver.BeanGet<ObjectLookup, Void>("yield", Void.class) {

             public Void getValue(ObjectLookup object) {

                 Thread.yield();

                 return null;

             }

         });

     }

 }