[英]Extract all parents of a given node
我正在尝试使用EBI-RDF sparql端点提取每个给定GO ID(节点)的所有父级 ,我是基于这 两个类似的问题来制定查询的,下面是两个说明问题的示例:
示例1 ( 链接到结构 ):
biological_process (GO:0008150)
|__ metabolic process (GO:0008152)
|__ methylation (GO:0032259)
在此示例中,使用以下查询:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX dcterms: <http://purl.org/dc/terms/>
PREFIX dbpedia2: <http://dbpedia.org/property/>
PREFIX dbpedia: <http://dbpedia.org/>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX obo: <http://purl.obolibrary.org/obo/>
SELECT (count(?mid) as ?depth)
(group_concat(distinct ?midId ; separator = " / ") AS ?treePath)
FROM <http://rdf.ebi.ac.uk/dataset/go>
WHERE {
obo:GO_0032259 rdfs:subClassOf* ?mid .
?mid rdfs:subClassOf* ?class .
?mid <http://www.geneontology.org/formats/oboInOwl#id> ?midId.
}
GROUP BY ?treePath
ORDER BY ?depth
我得到了预期的结果,没有任何问题:
c | treePath
--|-------------------------------------
6 | GO:0008150 / GO:0008152 / GO:0032259
但是,当该术语存在于多个分支(例如GO:0007267
)中时(如下例所示),以前的方法不起作用:
示例2 ( 链接到结构 )
biological_process (GO:0008150)
|__ cellular_process (GO:0009987)
| |__ cell communication (GO:0007154)
| |__ cell-cell signaling (GO:0007267)
|
|__ signaling (GO:0023052)
|__ cell-cell signaling (GO:0007267)
结果:
c | treePath
--|---------------------------------------------------------------
15| GO:0007154 / GO:0007267 / GO:0008150 / GO:0009987 / GO:0023052
我想要得到的是以下内容:
GO:0008150 / GO:0009987 / GO:0007154 / GO:0007267
GO:0008150 / GO:0023052 / GO:0007267
我了解的是,在幕后,我正在计算每个级别的深度并使用它来构造路径,当我们拥有一个仅属于一个分支的元素时,这种方法可以很好地工作。
SELECT (count(?mid) as ?depth) ?midId
FROM <http://rdf.ebi.ac.uk/dataset/go>
WHERE {
obo:GO_0032259 rdfs:subClassOf* ?mid .
?mid rdfs:subClassOf* ?class .
?mid <http://www.geneontology.org/formats/oboInOwl#id> ?midId.
}
GROUP BY ?midId
ORDER BY ?depth
结果:
depth | midId
------|------------
1 | GO:0008150
2 | GO:0008152
3 | GO:0032259
在第二个示例中,一切都错了,我不知道为什么,无论如何,我可以确定问题的一部分是具有相同深度/级别的术语,但是我不知道如何解决这个问题。
depth | midId
------|------------
2 | GO:0008150
2 | GO:0009987
2 | GO:0023052
3 | GO:0007154
6 | GO:0007267
感谢@AKSW,我找到了使用HyperGraphQL (用于在Web上查询和提供链接数据的GraphQL接口)的不错的解决方案。
我将在此处保留详细答案,这可能会对某人有所帮助。
如本教程所述将其链接到EBI Sparql端点
我使用的config.json
文件:
{ "name": "ebi-hgql", "schema": "ebischema.graphql", "server": { "port": 8081, "graphql": "/graphql", "graphiql": "/graphiql" }, "services": [ { "id": "ebi-sparql", "type": "SPARQLEndpointService", "url": "http://www.ebi.ac.uk/rdf/services/sparql", "graph": "http://rdf.ebi.ac.uk/dataset/go", "user": "", "password": "" } ] }
这是我的ebischema.graphql
文件的样子(因为我只需要Class
, id
, label
和subClassOf
):
type __Context { Class: _@href(iri: "http://www.w3.org/2002/07/owl#Class") id: _@href(iri: "http://www.geneontology.org/formats/oboInOwl#id") label: _@href(iri: "http://www.w3.org/2000/01/rdf-schema#label") subClassOf: _@href(iri: "http://www.w3.org/2000/01/rdf-schema#subClassOf") } type Class @service(id:"ebi-sparql") { id: [String] @service(id:"ebi-sparql") label: [String] @service(id:"ebi-sparql") subClassOf: [Class] @service(id:"ebi-sparql") }
我开始测试一些简单的查询,但是不断得到空的响应。 这个问题的答案解决了我的问题。
最后,我构造了查询以获取树
使用此查询:
{ Class_GET_BY_ID(uris:[ "http://purl.obolibrary.org/obo/GO_0032259", "http://purl.obolibrary.org/obo/GO_0007267"]) { id label subClassOf { id label subClassOf { id label } } } }
我得到了一些有趣的结果:
{ "extensions": {}, "data": { "@context": { "_type": "@type", "_id": "@id", "id": "http://www.geneontology.org/formats/oboInOwl#id", "label": "http://www.w3.org/2000/01/rdf-schema#label", "Class_GET_BY_ID": "http://hypergraphql.org/query/Class_GET_BY_ID", "subClassOf": "http://www.w3.org/2000/01/rdf-schema#subClassOf" }, "Class_GET_BY_ID": [ { "id": [ "GO:0032259" ], "label": [ "methylation" ], "subClassOf": [ { "id": [ "GO:0008152" ], "label": [ "metabolic process" ], "subClassOf": [ { "id": [ "GO:0008150" ], "label": [ "biological_process" ] } ] } ] }, { "id": [ "GO:0007267" ], "label": [ "cell-cell signaling" ], "subClassOf": [ { "id": [ "GO:0007154" ], "label": [ "cell communication" ], "subClassOf": [ { "id": [ "GO:0009987" ], "label": [ "cellular process" ] } ] }, { "id": [ "GO:0023052" ], "label": [ "signaling" ], "subClassOf": [ { "id": [ "GO:0008150" ], "label": [ "biological_process" ] } ] } ] } ] }, "errors": [] }
编辑
这正是我想要的,但是我注意到我无法添加另一个这样的子级别:
{
Class_GET_BY_ID(uris:[
"http://purl.obolibrary.org/obo/GO_0032259",
"http://purl.obolibrary.org/obo/GO_0007267"]) {
id
label
subClassOf {
id
label
subClassOf {
id
label
subClassOf { # <--- 4th sublevel
id
label
}
}
}
}
}
我创建了一个新问题: 端点返回Content-Type:text / html,SELECT查询无法识别
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