使用 ROWLEX API 查找类的 owlSubClass?

发布于 2025-01-08 11:05:52 字数 86 浏览 2 评论 0原文

我有一个给定的本体论,我喜欢根据它进行推理。我使用适用于 .NET 的 ROWLEX API。

如何找到一个类的所有 owlSubClass?

I have a given ontology, on which I like to reason. I use the ROWLEX API for .NET.

How can I find all owlSubClasses of a class?

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空心空情空意 2025-01-15 11:05:52

ROWLEX 不是推理机。它实现了推理器的一些功能 - 这对于 C# 类生成非常必要 - 但它的 API 并不是为此而设计的。然而,仍然有希望,只是不是最优雅的解决方案。

我假设您有一个本体,并使用 OwlGrinder.exe 从中生成了 .NET 类。因此,默认情况下,您会为本体中的每个相应 OWL 类生成两个关联的 .NET 类:一个轻型类和一个完整类。我们将仅使用轻量级。我们只需迭代所有 .NET 类并过滤掉是否是子类。就是这样。

string baseClassUri = "http://myontology/2012/10#mybaseclass";
Assembly asm = GetMyAssemblyGeneratedByOwlGrinder();

Type[] subClasses = (from type in asm.GetTypes()
                     where type.IsSubclassOf(typeof(NC3A.SI.Rowlex.OwlThing))
                     // selecting subclasses only
                     let attributes = type.GetCustomAttributes(typeof(NC3A.SI.Rowlex.SubClassOfAttribute), false)
                     from attr in attributes
                     let subClassAttr = attr as NC3A.SI.Rowlex.SubClassOfAttribute
                     where subClassAttr.TypeUri == baseClassUri
                     // selecting light classes only
                     let lightAttributes = type.GetCustomAttributes(typeof(NC3A.SI.Rowlex.LightVersionAttribute), false)
                     from lightAttr in lightAttributes
                     let lightAttr_ = lightAttr as NC3A.SI.Rowlex.LightVersionAttribute
                     where lightAttr_.LightVersion == true
                     select type).ToArray();

我没有尝试该代码,它可能有错误。但它确实表明了这个想法。每个生成的类都添加了一堆属性。其中包括 SubClassOfAttribute 中的基类以及它们是轻量类还是使用 LightVersionAttribute 的完整类。您可以根据这些属性过滤出您感兴趣的类。

ROWLEX is not a reasoner. It has some functionality of a reasoner implemented - it is very necessary for the C# class generation - but its API is not designed for that. However, there is still hope, just not the most elegant solution.

I assume, that you have an ontology and you generated .NET classes from that using OwlGrinder.exe. Therefore by default, you have two associated .NET classes generated for each corresponding OWL class in the ontology: one light class and one full class. We are going to use the light classes only. We simply iterate through ALL .NET classes and filter out if is a subclass. That is it.

string baseClassUri = "http://myontology/2012/10#mybaseclass";
Assembly asm = GetMyAssemblyGeneratedByOwlGrinder();

Type[] subClasses = (from type in asm.GetTypes()
                     where type.IsSubclassOf(typeof(NC3A.SI.Rowlex.OwlThing))
                     // selecting subclasses only
                     let attributes = type.GetCustomAttributes(typeof(NC3A.SI.Rowlex.SubClassOfAttribute), false)
                     from attr in attributes
                     let subClassAttr = attr as NC3A.SI.Rowlex.SubClassOfAttribute
                     where subClassAttr.TypeUri == baseClassUri
                     // selecting light classes only
                     let lightAttributes = type.GetCustomAttributes(typeof(NC3A.SI.Rowlex.LightVersionAttribute), false)
                     from lightAttr in lightAttributes
                     let lightAttr_ = lightAttr as NC3A.SI.Rowlex.LightVersionAttribute
                     where lightAttr_.LightVersion == true
                     select type).ToArray();

I did not try the code, it may be buggy. But it does show the idea. Each generated class have a bunch of attributes added. These include their base classes in the SubClassOfAttribute and whether they are light classes or full classes using the LightVersionAttribute. You can filter out the classes you are interested in based on these attributes.

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