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Groups > comp.lang.java.programmer > #39209

Re: How to handle methods in a common interface that supports different versions of a message format

From Arne Vajhøj <arne@vajhoej.dk>
Newsgroups comp.lang.java.programmer
Subject Re: How to handle methods in a common interface that supports different versions of a message format
Date 2019-12-06 21:49 -0500
Organization Aioe.org NNTP Server
Message-ID <qsf3v9$1rqj$1@gioia.aioe.org> (permalink)
References <2adff0bf-b579-4a12-87bc-70e1fe90a829@googlegroups.com>

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On 12/6/2019 2:55 AM, mike wrote:
> I would need some advice in the following issue:
> 
> public interface Netconf {
> 
> void methodA();
> 
> void methodB();
> 
> }
> 
> The issue I have is that methodA() only supports NETCONF message 1.0 and methodB() only supports NETCONF message 1.1
> 
> 1. Is it better to have separate interfaces like: Netconf and Netconf_1.1 ( better naming?)
> 2. If we use one interface, Netconf, and in the implementation we have a property for netconfVersion should I just throw exception if methodA() is called and we have set netconfVersion 1.1?
> 
> Any other considerations I need to do when supporting multiple versions of a message like NETCONF?

If you want to use proper typing then I like:

public interface Netconf {
     NetconfVersion getVersion();
}

public interface Netconf10 extends Netconf {
     void methodA();
}

public interface Netconf11 extends Netconf {
     void methodB();
}

Having methods that should not be there and that throws an exception
is not good IMHO.

Arne


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Thread

How to handle methods in a common interface that supports different versions of a message format mike <mikaelpetterson@hotmail.com> - 2019-12-05 23:55 -0800
  How to handle methods in a common interface that supports different versions of a message format javaXp <n.sharir@gmail.com> - 2019-12-06 04:27 -0800
  Re: How to handle methods in a common interface that supports different versions of a message format Arne Vajhøj <arne@vajhoej.dk> - 2019-12-06 21:49 -0500
    Re: How to handle methods in a common interface that supports different versions of a message format mike <mikaelpetterson@hotmail.com> - 2019-12-08 23:51 -0800
      Re: How to handle methods in a common interface that supports different versions of a message format Arne Vajhøj <arne@vajhoej.dk> - 2019-12-09 21:24 -0500
      Re: How to handle methods in a common interface that supports different versions of a message format Andreas Leitgeb <avl@logic.at> - 2019-12-10 16:41 +0000

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