如何使用Virtuoso创建SPARQL端点? [英] How to create a SPARQL endpoint using Virtuoso?
问题描述
我刚刚设置了Virtuoso，并使用以下代码将本地计算机上存在的OWL文件(使用Protege软件创建)加载到Virtuoso中:
I have just setup Virtuoso and I have loaded an OWL file (created with Protege software) present on my local machine in to Virtuoso using the following code:
SQL> DB.DBA.RDF_LOAD_RDFXML_MT (file_to_string_output ('antibiotics.owl'), '', 'http://myexample.com');
现在，我的问题是如何访问URI myexample.com?如何在Virtuoso中创建SPARQL端点，以便对其进行查询?
Now, my question is how do I access the URI myexample.com ? How do I create a SPARQL endpoint in Virtuoso so that I can query it?
推荐答案
无需创建sparql端点，因为它已经存在. 检查Virtuoso实例sparql端点 http://cname:port/sparql 上插入的RDF数据(通常: http://localhost:8890/sparql ).要进行一些测试查询，请使用Virtuoso(指挥)的Web界面 http://localhost:8890/conductor 并转到链接的数据"标签. 输入查询，例如:
No need to create a sparql endpoint, since it's already there. Check the inserted RDF data on your Virtuoso instance sparql endpoint http://cname:port/sparql (usually: http://localhost:8890/sparql). To do some test queries, use the web interface of Virtuoso (the conductor) http://localhost:8890/conductor and go to the 'Linked Data' tab. Enter a query like:
SELECT ?s ?p ?o
FROM <http://myexample.com>
WHERE {?s ?p ?o}
LIMIT 1000
开始.
您还可以通过在sparql查询前面添加'SPARQL'，直接从vsql命令行进行查询. 要直接通过html获取请求以特定格式获取结果，请执行以下操作:
You can also query directly from the vsql command line by adding 'SPARQL ' in front of your sparql query. To get results in a specific format directly via html get request:
http://localhost:8890/sparql?query=(YourQueryUriEncodedWithout())&format=json
有关更详细的答案，请参阅此处的文档: http://docs.openlinksw.com/virtuoso/rdfsparql.html
For a more detailed answer, consult the documentation here: http://docs.openlinksw.com/virtuoso/rdfsparql.html
景点:
16.2.3.15. SPARQL Endpoint with JSON/P Output Option: Curl Example
16.2.5. SPARQL Inline in SQL
如果您仍然想要自己的端点:
If you still want your own endpoint:
16.2.3.4.6. Creating and Using a SPARQL-WebID based Endpoint
最诚挚的问候...
这篇关于如何使用Virtuoso创建SPARQL端点?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
