发现没有@Transaction 的方法?

Discover methods without @Transaction?

我正在为我想要实施的验证而苦苦挣扎。我想验证以更新开头的服务中的每个方法都必须具有 @Transactional 注释。到目前为止,我已经提出了一个概念,它为我提供了从我的服务 class 以更新开始的方法(例如 updateInvoice)。但我不知道如何建立一个约束,select 没有@Transaction 注释的方法。

以下似乎有效:

match
   (aType:Type:Class)-[:ANNOTATED_BY]->()-[:OF_TYPE]->(anAnnotationType:Type),
   (aType:Type)-[:DECLARES]->(aMethod:Method)
optional match
   (aMethod)-[:ANNOTATED_BY]->()-[:OF_TYPE]->(tType:Type)
with anAnnotationType, aMethod, tType
where
    anAnnotationType.fqn = "com.mycompany.services.Service" 
    and aMethod.name =~ "update.*"
    and ((tType is null) or not (tType.fqn = "com.mycompany.services.Transact"))
return
    aMethod.name, tType

我建议定义一些代表你的关键元素的概念来定义对它们的约束,即

您的服务:

<concept id="service:ServiceClass">
  <description>Adds a label "Service" to every class annotated by "@com.mycompany.services.Service"</description>
  <cypher><![CDATA[
  MATCH
    (service:Type:Class)-[:ANNOTATED_BY]->()-[:OF_TYPE]->(serviceAnnotationType)
  SET
    service:Service
  WHERE
    serviceAnnotationType.fqn = "com.mycompany.services.Service"
  RETURN
    service   
  ]]>
  </cypher>
</concept>

您的交易方式:

<concept id="service:TransactMethod">
  <description>Adds a label "Transact" to every method annotated by "@com.mycompany.services.Transact"</description>
  <cypher><![CDATA[
  MATCH
    (method:Method)-[:ANNOTATED_BY]->()-[:OF_TYPE]->(transactAnnotationType)
  SET
    method:Transact
  WHERE
    transactAnnotationType.fqn = "com.mycompany.services.Transact"
  RETURN
    method   
  ]]>
  </cypher>
</concept>

您的限制条件:

<constraint id="service:AllUpdateMethodsMustBeTransacted">
  <requiresConcept refId="service:ServiceClass" />
  <requiresConcept refId="service:TransactMethod" />
  <description>All update methods must be transacted</description>
  <cypher><![CDATA[
  MATCH
    (service:Service:Class)-[:DECLARES]->(updateMethod:Method)
  WHERE
    updateMethod.name =~ "update.*" // even this could be extracted to a concept
    and not updateMethod:Transact
  RETURN
    updateMethod
  ]]>
  </cypher>
</constraint >

这种方法有几个优点:

  • 您现在获得了更多规则,但每条规则的可读性都更好(尤其是约束),因为您使用的是为设计定义的术语
  • 对于其他约束,您很可能还需要概念 "Service" 和 "Transact" - 现在只需使用标签
  • 如果您正在创建 Maven 站点,您会收到一份关于设计中所有概念的报告(即当前存在的服务实现)