逻辑派生(logical derivation) 一个从物理文档派生的过程,可以将向该派生中分配其他服务描述元数据。另请参阅 逻辑模型(logical model)。
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要查看逻辑派生类型,在导航树中展开Service Metadata。
To see logical derivation types, expand Service Metadata in the navigation tree.
服务描述实体是Service Registry提供的信息模型中的一个元数据类别,其中包括物理文档、逻辑派生和一般对象。
Service description entities are a category of metadata in the information model maintained by Service Registry that includes physical documents, logical derivations and generic objects.
缺省情况下,所有字段在JPA中都是持久性的;但是,您可以将一个字段标注为瞬态的,然后可以使用逻辑派生任何字段。
By default, all fields are persistent in JPA; however, you can mark a field as transient, and then you can derive any field using logic. Below, a query is executed to derive a field.
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