所以我们一直在开发一些基于图的分析工具,在后台使用neo4j作为持久化引擎。作为其中的一部分,我们正在开发适合我们领域的图数据模型,我们希望在应用层使用它来限制节点的类型,或确保某些类型的节点必须具有某些属性。正常数据模型限制。
这就是背景,我要问的是是否有一些标准方法来表示图形数据库的数据模型?也许相当于 xsd 的图形?
最佳答案
Neo4j 中有一个支持强模式定义的开源项目:Structr( http://structr.org ,请参见实际操作: http://vimeo.com/structr/videos )
使用 Structr,您可以定义数据模型的图内模式,包括
目前正在向架构中添加对方法(自定义操作)的支持。
可以使用编辑器或直接通过 REST 编辑模式,修改数据模型的 JSON 表示:
{
"query_time": "0.001618446",
"result_count": 4,
"result": [
{
"name": "Whisky",
"extendsClass": null,
"relatedTo": [
{
"id": "96d05ddc9f0b42e2801f06afb1374458",
"name": "Flavour"
},
{
"id": "28f85dca915245afa3782354ea824130",
"name": "Location"
}
],
"relatedFrom": [],
"id": "df9f9431ed304b0494da84ef63f5f2d8",
"type": "SchemaNode",
"_name": "String"
},
{
"name": "Flavour",
...
},
{
"name": "Location",
...
},
{
"name": "Region",
...
}
],
"serialization_time": "0.000829985"
}
{
"query_time": "0.001466743",
"result_count": 3,
"result": [
{
"name": null,
"sourceId": "28f85dca915245afa3782354ea824130",
"targetId": "e4139c5db45a4c1cbfe5e358a84b11ed",
"sourceMultiplicity": null,
"targetMultiplicity": "1",
"sourceNotion": null,
"targetNotion": null,
"relationshipType": "LOCATED_IN",
"sourceJsonName": null,
"targetJsonName": null,
"id": "d43902ad7348498cbdebcd92135926ea",
"type": "SchemaRelationship",
"relType": "IS_RELATED_TO"
},
{
"name": null,
"sourceId": "df9f9431ed304b0494da84ef63f5f2d8",
"targetId": "96d05ddc9f0b42e2801f06afb1374458",
"sourceMultiplicity": null,
"targetMultiplicity": "1",
"sourceNotion": null,
"targetNotion": null,
"relationshipType": "HAS_FLAVOURS",
"sourceJsonName": null,
"targetJsonName": null,
"id": "bc9a6308d1fd4bfdb64caa355444299d",
"type": "SchemaRelationship",
"relType": "IS_RELATED_TO"
},
{
"name": null,
"sourceId": "df9f9431ed304b0494da84ef63f5f2d8",
"targetId": "28f85dca915245afa3782354ea824130",
"sourceMultiplicity": null,
"targetMultiplicity": "1",
"sourceNotion": null,
"targetNotion": null,
"relationshipType": "PRODUCED_IN",
"sourceJsonName": null,
"targetJsonName": null,
"id": "a55fb5c3cc29448e99a538ef209b8421",
"type": "SchemaRelationship",
"relType": "IS_RELATED_TO"
}
],
"serialization_time": "0.000403616"
}
您可以通过基于图内模式动态配置的 RESTful API 访问存储在 Neo4j 中的节点和关系作为 JSON 对象。
$ curl try.structr.org:8082/structr/rest/whiskies?name=Ardbeg
{
"query_time": "0.001267211",
"result_count": 1,
"result": [
{
"flavour": {
"name": "J",
"description": "Full-Bodied, Dry, Pungent, Peaty and Medicinal, with Spicy, Feinty Notes.",
"id": "626ba892263b45e29d71f51889839ebc",
"type": "Flavour"
},
"location": {
"region": {
"name": "Islay",
"id": "4c7dd3fe2779492e85bdfe7323cd78ee",
"type": "Region"
},
"whiskies": [
...
],
"name": "Port Ellen",
"latitude": null,
"longitude": null,
"altitude": null,
"id": "47f90d67e1954cc584c868e7337b6cbb",
"type": "Location"
},
"name": "Ardbeg",
"id": "2db6b3b41b70439dac002ba2294dc5e7",
"type": "Whisky"
}
],
"serialization_time": "0.010824154"
}
在 UI 中,还有一个数据编辑 (CRUD) 工具,以及支持在 Neo4j 上创建 Web 应用程序的 CMS 组件。
免责声明:我是 Structr 的开发人员和该项目的创始人。
关于graph - 如何表示图的数据模型,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23762424/