我有一个利用阿帕奇斯2实施的SOAP服务。 具有以下定义的“密码>。
<xs:complexType name="Message">
<xs:sequence>
<xs:element minOccurs="0" name="id" type="xs:int"/>
<xs:element minOccurs="0" name="caption" nillable="true" type="xs:string"/>
<xs:element minOccurs="0" name="text" nillable="true" type="xs:string"/>
<xs:element minOccurs="0" name="source" nillable="true" type="xs:string"/>
</xs:sequence>
</xs:complexType>
我必须替换<代码>源码要素,并提及复杂的类别<代码>Source。 避免与现有客户分离的最佳方式是什么?
Martin Fowler就schema版本和推广点提供了一大篇文章。 由于你今天没有延期点,这不是你的选择。 在该行业中采用的一种做法是,在一定时间内,有不止一种版本的“世俗”和“世俗”。 因此,如果贵国的网络服务使用四个组成部分加以指定:
并且要求你进行非背后兼容的改动,你可以重复第1和第2部分,并为它们确定另一个名称空间,例如<代码>http://www.example.org/abc_v2"。 你们必须创造新的服务版本(第3号)的提供者,并在某种程度上将服务与第4部分结合起来——毫无疑问,这是很棘手的问题。
This approach works, although it is not nice as you duplicate a lot of code that wants to be maintained. If you follow this approach you should define a deadline for all clients still using version 1 of your service, so you can get rid of the duplicated code later.
最后,不要ice,而是选择。
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