[neo4j] Exception persisting nodes with duplicate unique keys

Hi there,
I am trying to use the unique entity support of Spring Data Neo4j. I have annotated a field with @Indexed(unique=true)

I found that this is working, since no duplicate nodes are being created in the database. But I cannot catch the exception while persisting it.
I want to do something like the following

try
{
u1.persist();
}
catch (SomeException e)
{
System.out.println(e.getMessage());
}

Does anybody have any idea, how to do this ?

Thanks
Faisal

Neo4j's unique indexes work like that, if the entity is already in the graph you get it back, otherwise it is created for you.

It is rather a "getOrCreate()" operation. Not so much we can do in the SDN world about it.

You can compare the object on your side but they should be equal anyway.

Michael