org.neo4j.ogm.metadata.MappingException: Null key for a Map not allowed in JSON (use a converting NullKeySerializer?)

Spring JIRA | Liliana Ziolek | 2 years ago
  1. 0

    Spring Data Neo4j 4 - No Identity Field Found For Class

    Stack Overflow | 11 months ago | David Vincent
    org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.neo4j.ogm.metadata.MappingException: No identity field found for class: com.david.duck.model.Master
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  3. 0

    GitHub comment 57#150011365

    GitHub | 1 year ago | frant-hartm
    org.neo4j.ogm.metadata.MappingException: No identity field found for class: com.example.entity.Address
  4. 0

    SDN4 - MappingException thrown when using an interface as the end of a RelationshipEntity

    Stack Overflow | 1 year ago | simonl
    org.neo4j.ogm.metadata.MappingException: No identity field found for class: com.sdn4demo.entity.Node

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    Root Cause Analysis

    1. org.neo4j.ogm.metadata.MappingException

      Null key for a Map not allowed in JSON (use a converting NullKeySerializer?)

      at org.neo4j.ogm.session.request.SessionRequestHandler.execute()
    2. org.neo4j.ogm
      ConvertibleIntegrationTest.shouldSaveAndRetrieveEnums
      1. org.neo4j.ogm.session.request.SessionRequestHandler.execute(SessionRequestHandler.java:98)
      2. org.neo4j.ogm.session.delegates.SaveDelegate.save(SaveDelegate.java:66)
      3. org.neo4j.ogm.session.delegates.SaveDelegate.save(SaveDelegate.java:41)
      4. org.neo4j.ogm.session.Neo4jSession.save(Neo4jSession.java:370)
      5. org.neo4j.ogm.integration.convertible.ConvertibleIntegrationTest.shouldSaveAndRetrieveEnums(ConvertibleIntegrationTest.java:66)
      5 frames