sesame

SPARQL Construct Clause to include predicate literals

╄→гoц情女王★ 提交于 2021-01-27 18:11:21
问题 I'm trying to use SPARQL CONSTRUCT to strip a set of data from dbpedia - I'm only interested in a set of Artists, and I want Sesame as small as possible for speed. What I thought I could do is use CONSTRUCT to get every predicate for a given artist. I can get the first CONSTRUCT clause working to make sure I get type "Person", but that only gives me triples satisfying that clause - I want their names, labels, birthPlaces etc to. My query below is trying to capture Monet's name in the second

Kong身份验证原理

孤街醉人 提交于 2020-08-19 02:55:11
前言 上游服务(代理的API或微服务)的流量通常由各种Kong身份验证插件的应用程序和配置控制。 Kong的 service 概念与上游服务是一对一映射,因此可以通过在 service 上配置认证插件来控制访问上游服务的权限。 核心概念 service:上游服务的抽象,与上游服务是一对一映射, 比如后端微服务,API等。 consumer:消费者的核心原则是您可以将插件附加到他们,从而自定义请求行为,消费者可以代表一个用户,一个应用程序等。 通用认证 最常见的情况是要求进行身份验证,并且不允许访问任何未经身份验证的请求。 为此,可以使用任何身份验证插件。 这些插件的通用方案/流程如下: 将认证插件应用到 service ,或全局应用。 创建一个 consumer 。 为 consumer 配置凭据。 有任何请求进入,Kong都会检查提供的凭据(取决于身份验证类型),并且如果无法验证将阻止该请求。 匿名访问 Kong可以配置给定服务同时允许身份验证和匿名访问。一种可能的应用场景是,允许低频访问的匿名,而高频访问的必须验证。因此所有的认证插件都有一个 config.anonymous 的配置。 要实现匿名访问,首先要创建一个不添加任何凭据的 consumer ,然后添加一个认证插件,设置认证插件的 config.anonymous 为 consumer 的id。以Key认证为例

variable 'x' in projection not present in GROUP BY

∥☆過路亽.° 提交于 2020-04-16 02:23:09
问题 I want to count municipalities and what I have in parentheses work. However, I want to get another variable too, but when I am adding it to SELECT, I am getting: org.openrdf.query.MalformedQueryException: variable 'region_name' in projection not present in GROUP BY. In my query I have: "SELECT ?region_name (COUNT(?municipality) AS ?count) " + What am I missing? Notice that I do not have anything like GROUP anywhere in my project, I think it is happening internally of Sesame. I just saw that

variable 'x' in projection not present in GROUP BY

▼魔方 西西 提交于 2020-04-16 02:21:48
问题 I want to count municipalities and what I have in parentheses work. However, I want to get another variable too, but when I am adding it to SELECT, I am getting: org.openrdf.query.MalformedQueryException: variable 'region_name' in projection not present in GROUP BY. In my query I have: "SELECT ?region_name (COUNT(?municipality) AS ?count) " + What am I missing? Notice that I do not have anything like GROUP anywhere in my project, I think it is happening internally of Sesame. I just saw that

Querying a repository in Open RDF and displaying the results

柔情痞子 提交于 2020-01-24 15:17:07
问题 I have loaded an RDF data-store into an OpenRDF Repository, and then I am trying to query the Repository and retrieve certain data based on the query. I am running a very simple query to get all the subjects predicates and the objects. But when I am trying to print the query results it is just showing the first triple. I am giving the code of the method which is doing the query work only, please check and let me know what is wrong.- private static void queryingRDF(Repository repo) { try{

Sparql - delete queries stop working after update

淺唱寂寞╮ 提交于 2020-01-23 17:46:25
问题 I've created an application, which works with openrdf sesame and owlim module. Recently, I needed to update licence key to owlim (I received a key for the newest owlim version), so I was forced to update sesame as well. Application was build with sesame 2.6.0 and owlim 4.3, now updated to sesame 2.6.8 and owlim 5.2 There are issues with delete sparql queries, which works in older version, so I got a hunch, that update is the problem. Here is one such query: PREFIX oporg: <http://sesame

How to iterate over CONSTRUCT output from rdflib?

独自空忆成欢 提交于 2020-01-07 03:05:28
问题 This is a follow-up question from How to prevent triples from getting mixed up while uploading to Dydra programmatically? I've created a new graph using SPARQL CONSTRUCT query. I now want to iterate over it so that I can add the statements to an RDFlib graph and then insert the data into another triplestore. I have the following questions: If SPARQL CONSTRUCT returns a graph, do I still need to iterate over the statements and add them to an RDFlib graph? I probably need to do so to be able to

How to INSERT all triples from an RDFlib graph into another repository without iterating through every triple?

橙三吉。 提交于 2020-01-06 21:58:54
问题 This question is related to What URI to use for a Sesame repository while executing a SPARQL ADD query. I'm trying to INSERT all triples from a Sesame repository into another (Dydra). There are a couple of ways to do it, such as using SERVICE clause or Dydra's GUI. However, Dydra restricts the use of SERVICE and I want an efficient way to insert the data programmatically. This is the code I have right now: queryStringUpload = 'INSERT {?s ?p ?o} WHERE GRAPH %s {?s ?p ?o}' % dataGraph sparql =

Querying a Sesame triplestore using JavaScript [closed]

主宰稳场 提交于 2020-01-06 19:09:43
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . I am trying to find out if one can query a graph in Sesame triplestore using JavaScript and extract the result as SPARQL/JSON. I want to extract Lat/Long values and plot on a map using leaflet.js. The follow up question is at Querying Sesame triplestore using JavaScript 回答1: Yes,

Querying a Sesame triplestore using JavaScript [closed]

末鹿安然 提交于 2020-01-06 19:07:02
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . I am trying to find out if one can query a graph in Sesame triplestore using JavaScript and extract the result as SPARQL/JSON. I want to extract Lat/Long values and plot on a map using leaflet.js. The follow up question is at Querying Sesame triplestore using JavaScript 回答1: Yes,