Passing parameters to cypher query in @Query in Spring Data Neo4J
neo4j, spring-data-neo4j
Solution
I'm not sure how that would be supported. It would have to convert the User into a map to be used as parameter, usually when you pass in an entity it is converted into the internal node-id for that entity.
Why don't you just do `template.save(user)` ?
You can try to pass in the parameters individually.
@Query("MERGE (n:User:_User { username: {0}, password: {1}, roles: {2} }) RETURN n")
User registerUser(String name, String password, Collection<String> roles);
Problem
I have a User domain which: 1) String username, 2) String password, 3) Roles [] roles (Roles is enum). A method in my UserRepository is as follows: ``` @Query("MERGE (n:User:_User { username: \"{0}.username\", password: \"{0}.password\", roles: \"{0}.roles\" }) RETURN n") User registerUser(User user); ``` This throws `org.springframework.core.convert.ConversionFailedException` as it cannot convert String to Roles, which is an enum. If I get rid of the quotes around {0}.roles then it will throw this: ``` org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is org.neo4j.helpers.ThisShouldNotHappenError: Developer: Andres claims that: Need something with properties ``` It would be ideal if the User argument can be serialized directly into a MERGE query or any way to parse this Roles []. Can anyone help me with this please? I was using SDN 3.1.0 and Neo4J 2.0.3. Update1: Ideally, it'd be great to do something like: ``` @Query("MERGE (n:User:_User {0}) RETURN n") User registerUser(User user); ```