Jena Rule：如何使用now（？x）Builtin原语

Question

Can please someone explain about now(?x) Builtin primitive in jena rule. I need to understand about this but not found resource on internet. Like example etc. Only found information about this from Apache jean website which is that:

now(?x):Binds ?x to an xsd:dateTime value corresponding to the current time.

Any Example how to use in rules.

Thanks!

Answer 1

在规则体中调用此函数，这是一个示例：

[r1: (?s :startTime ?x) <- (?s a :Match), now(?x)]