bidirectional-relation

Neo4j Bidirectional Relationship

August 30, 2023 by Tarik

No, there isn’t. All relationships in neo4j have a direction, starting and ending at a given node. There are a small number of workarounds. Firstly, as you’ve suggested, we can either have two relationships, one going from A to B and the other from B to A. Alternatively, when writing our MATCH query, we can … Read more

Jackson – serialization of entities with birectional relationships (avoiding cycles)

April 28, 2023 by Tarik

Jackson 2.0 does support full cyclic object references. See “Jackson 2.0 released” (section ‘Handle Any Object Graphs, even Cyclic ones!’) for an example. Basically, you will need to use new @JsonIdentityInfo for types that require id/idref style handling. In your case this would be both Parent and Child types (if one extends the other, just … Read more