在SPARQL查询中遵循名称空间

Question

给定这种数据结构

@prefix core <http://www.w3.org/2004/02/skos/core#> 
<http://localhost/myvocab/1> core#notation 1 .
<http://localhost/myvocab/1> <http://www.w3.org/2006/time#inDateTime> <http://localhost/myvocab/item1#DateDescription> .

<http://localhost/myvocab/item1#DateDescription> <http://www.w3.org/2006/time#year>  2016 ;
            <http://www.w3.org/2006/time#month>  "June"

如果我跑步

select * where {?s ?p ?o . 
                    <http://www.w3.org/2004/02/skos/core#notation> 1 . }

那么仅返回前两个三元组（ :hasID和:hasTime ）。 是否有一个sparql查询（最好不使用正则表达式过滤器来匹配ID）也要从子名称空间返回所有三元组？

我希望我可以达到以下目标

-------------------------------------------------------------------------------------------------------------------------------------------------------
| s                                                | p                                              | o                                               |
=======================================================================================================================================================
| <http://localhost/myvocab/item1>                 | <http://www.w3.org/2006/time#inDateTime>       | <http://localhost/myvocab/item1#DateDescription |
| <http://localhost/myvocab/item1>                 | <http://www.w3.org/2004/02/skos/core#notation> | 1                                               |
| <http://localhost/myvocab/item1#DateDescription> | <http://www.w3.org/2006/time#month>            | "June"                                          |
| <http://localhost/myvocab/item1#DateDescription> | <http://www.w3.org/2006/time#year>             | 2016                                            |
-------------------------------------------------------------------------------------------------------------------------------------------------------

Answer 1

如果您提供了我们可以实际加载的数据以及您尝试过的属性形式的查询，那么它总是有帮助的。 您显示的数据实际上并不合法，您提供的查询也不合法。 以下是一些实际可加载的示例数据：

@prefix core: <http://www.w3.org/2004/02/skos/core#> 

<http://localhost/myvocab/1> core:notation 1 ;
                             <http://www.w3.org/2006/time#inDateTime> <http://localhost/myvocab/item1#DateDescription> .

<http://localhost/myvocab/item1#DateDescription> <http://www.w3.org/2006/time#year> 2016 ;
                                                 <http://www.w3.org/2006/time#month>  "June"

如果您了解我的话，那么您也想遵循：item1_DateTime对象的属性。 您可以通过遵循：item1的属性和值等的属性路径来实现。 在此查询中，我将（：|！:)用作通配符，因为每个属性都是：或不是。 末尾的*表示遵循任意长度的路径。

prefix core: <http://www.w3.org/2004/02/skos/core#>

select ?s ?p ?o where {
  ?s_ core:notation 1 ;
      (<>|!<>)* ?s .
  ?s ?p ?o .
}

--------------------------------------------------------------------------------------------------------------------------------------------------
| s                                                | p                                        | o                                                |
==================================================================================================================================================
| <http://localhost/myvocab/1>                     | <http://www.w3.org/2006/time#inDateTime> | <http://localhost/myvocab/item1#DateDescription> |
| <http://localhost/myvocab/1>                     | core:notation                            | 1                                                |
| <http://localhost/myvocab/item1#DateDescription> | <http://www.w3.org/2006/time#month>      | "June"                                           |
| <http://localhost/myvocab/item1#DateDescription> | <http://www.w3.org/2006/time#year>       | 2016                                             |
--------------------------------------------------------------------------------------------------------------------------------------------------