CODEWITHSUNDEEP
propertiesneo4j
user2315094
user2315094

Reputation: 809

map literals neo4j 2.01

I'm using neo4j 2.01 Could you please tell me how to make this map literals work?

neo4j-sh (?)$ MERGE (n:person {name:'Alice', age:38, address:{city:'London', residential:true}}) RETURN n;

MatchError: Map(city -> London, residential -> true) (of class scala.collection.immutable.Map$Map2)

Thank you in advance for your kind help. Marco

Upvotes: 1

Views: 75

Answers (1)

Stefan Armbruster
Stefan Armbruster

Reputation: 39915

Map literals are only allowed in the RETURN clause. Neo4j properties on nodes are either primitives, Strings or arrays of them. If you want to store a more complex value with a node, decompose the complex value into a set of nodes and relationships and attach it to your entity node with a relationship:

MERGE (n:person {name:'Alice', age:38})-[:LIVES_IN]->(a:address {city:'London', residential:true}}) RETURN n,a;

Even the residential flag is implicitly encoded into the relationship as LIVES_IN, so you might omit it and rely on verbose relationship types.

To use map literals in RETURN:

match (n:person)-[:LIVES_IN]->(a:address) return {name:n.name, age:n.age, address:a}

Upvotes: 1

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