public EntityBridgeInvocationHandler(Map fieldMap,
    Map selectorMap,
    Class beanClass) 
{
      this.beanClass = beanClass;
      this.fieldMap = fieldMap;
      this.selectorMap = selectorMap;
}

Creates an invocation handler for the specified entity.

 public Object invoke(Object proxy,
    Method method,
    Object[] args) throws FinderException 
{
      // todo find a better workaround
      // CMP/CMR field bridges are mapped to its abstract method names because of the bug
      // in reflection introduced in Sun's 1.4 JVM, i.e. when an abstract class C1 extends a super class C2
      // and implements interface I and C2 and I both declare method with the same signature M,
      // C1.getMethods() will contain M twice.
      // ejbSelect methods are mapped to Method objects instead. Because ejbSelect methods having the same name
      // might have different signatures. Hopefully, the probability of an ejbSelect method to appear in an interface
      // is lower.
      String methodName = method.getName();
      BridgeInvoker invoker = (BridgeInvoker) fieldMap.get(methodName);
      if(invoker == null)
      {
         //invoker = (BridgeInvoker) selectorMap.get(methodName);
         invoker = (BridgeInvoker) selectorMap.get(method);
         if(invoker == null)
         {
            throw new EJBException("Method is not a known CMP field " +
               "accessor, CMR field accessor, or ejbSelect method: " +
               "methodName=" + methodName);
         }
      }
      try
      {
         return invoker.invoke(ctx, method, args);
      }
      catch(RuntimeException e)
      {
         throw e;
      }
      catch(FinderException e)
      {
         throw e;
      }
      catch(Exception e)
      {
         throw new EJBException("Internal error", e);
      }
}

 public  void setContext(EntityEnterpriseContext ctx) 
{
      if(ctx != null && !beanClass.isInstance(ctx.getInstance()))
      {
         throw new EJBException("Instance must be an instance of beanClass");
      }
      this.ctx = ctx;
}