Java 的 CORBA ORB 并连接到第 3 方命名服务

Question

以下内容来自JavaTM IDL FAQ :

How do I connect to a 3rd-party Naming Service from Sun's ORB?

The recommended way is to use the

Interoperable Naming Service (INS)

, if this option is supported by the 3rd-party Naming Service.

To use the Sun ORB with another vendor's Naming Service,

• Start the 3rd-party name server on Host and Port.

• Pass the following argument to ORB.init():

  -ORBInitRef NameService=corbaloc:iiop:1.2@:/NameService
  

  When you do orb.resolve_initial_references( "NameService" ), you should be able to connect to 3rd-party Name Service. If you are still not able to connect, try these troubleshooting hints:

• Verify that the 3rd-party Name Service supports INS.

• Verify that the host and port information is accurate.

• Verify that the 3rd-party Name Service has been started successfully.

• Verify that the 3rd-party Name Service supports GIOP 1.2. If not, refer to the Name Server's documentation for the correct the GIOP version, and modify the corbaloc: URL accordingly.

• Determine if the 3rd-party Name Service has a different object key it uses to contact NameService. If so, refer to the Name Server's documentation.

我是 CORBA 新手，我想知道是否有其他方法可以连接到第三方命名服务，但可能不那么“推荐”。毕竟，我如何猜测(目前尚不清楚)第 3 方命名服务是否支持 INS(可互操作命名服务)。但话又说回来，我确实提到我对这些事情很陌生......

Answer 1

自从 CORBA 上次对我造成影响以来，已经过去 10 多年了，但我仍然记得一些事情。

“不推荐”的方法是使用 IOR(可互操作命名引用)，它相当于 CORBA 的 URL。 IOR 本质上是 Activity CORBA 对象位置的字符串表示形式。客户端可以将 IOR 转换为该对象的句柄。

通常，IOR 本身指向 CoS 命名服务，它是其他对象的注册表，但希望拥有直接指向远程对象的 IOR 也是有效的。

查看此ancient article (从 1999 年开始，最后一次有人关心 CORBA)了解如何处理 IOR。