作为树中的子节点返回关系(Neo4j Cypher)
有没有办法将关系检索为树的子元素 这是我掌握的基本数据:作为树中的子节点返回关系(Neo4j Cypher),neo4j,cypher,neo4j-apoc,Neo4j,Cypher,Neo4j Apoc,有没有办法将关系检索为树的子元素 这是我掌握的基本数据: CREATE (:Customer {id:1, name:'Customer 1'})<-[:CREATED_BY]-(c:Category {id:1, name:'Category 1'}) WITH c as category, range(2, 7) as subCatIds FOREACH (s IN subCatIds | CREATE (category)<-[:SUBCATEGORY_OF]-(:Catego
CREATE (:Customer {id:1, name:'Customer 1'})<-[:CREATED_BY]-(c:Category {id:1, name:'Category 1'})
WITH c as category, range(2, 7) as subCatIds
FOREACH (s IN subCatIds | CREATE (category)<-[:SUBCATEGORY_OF]-(:Category {id:s, name:'SubCategory '+s}))
WITH category, range(1, 5) as attTypeIds
FOREACH (a IN attTypeIds | CREATE (category)-[:HAS_ATTRIBUTE {name:'Attribute '+a, required: (a%2=0)}]->(:AttributeType {id:a, name:'AttributeType '+a}))
WITH category
MATCH p = (:AttributeType)<-[:HAS_ATTRIBUTE]-(category)<-[:SUBCATEGORY_OF]-(:Category)
RETURN p
CREATE(:Customer{id:1,name:'Customer 1'})您可以尝试将路径组合到单个列表中:
MATCH (:Customer {id:1})<-[:CREATED_BY]-(c:Category {id:1}),
SubCatsP = (c)<-[:SUBCATEGORY_OF*0..1]-(:Category),
AttP = (c)-[:HAS_ATTRIBUTE]->(att:AttributeType)
WITH COLLECT(SubCatsP) + COLLECT(AttP) as category
CALL apoc.convert.toTree(category) yield value
RETURN value
MATCH(:Customer{id:1})将路径与+组合就是答案
MATCH (:Customer {id:1})<-[:CREATED_BY]-(c:Category {id:1}),
SubCatsP = (c)<-[:SUBCATEGORY_OF*0..1]-(:Category),
AttP = (c)-[:HAS_ATTRIBUTE]->(att:AttributeType)
WITH COLLECT(SubCatsP) as category, RELATIONSHIPS(AttP) as attributes
CALL apoc.convert.toTree(category) yield value
RETURN value, attributes
{
id: 1,
name: 'Category 1',
SUBCATEGORY_OF:[
{id:2, name: 'Subcategory 2'}, ...
]
HAS_ATTRIBUTE:[
{name: 'Attribute 1', required: false, att: {name:'AttributeType 5',id:5}}, ...
<OR>
{name: 'Attribute 1', required: false, att.name:'AttributeType 5',att.id:5}, ...
]
}
MATCH (:Customer {id:1})<-[:CREATED_BY]-(c:Category {id:1}),
SubCatsP = (c)<-[:SUBCATEGORY_OF*0..1]-(:Category),
AttP = (c)-[:HAS_ATTRIBUTE]->(att:AttributeType)
WITH COLLECT(SubCatsP) + COLLECT(AttP) as category
CALL apoc.convert.toTree(category) yield value
RETURN value