Double saved

[AmaliaMV]

I want to save an object, but first I need to get its ID to update another property of the same object. I am doing this:

        if (instance.validate()) {
            instance.save()  // now I have an id
            instance.code = String.format("%014d", instance.id)
            instance.save()
        }

The domain object is

class Product {

    final static String DEFAULT_CODE = "XXXX-XXXX-XXXX"

    String code = DEFAULT_CODE
    String description

    static constraints = {
        code size: 14..14
    }
}

But when I get the object from the data base, the code property doesn't have the new value. I created an integration test to show this:

void "test double saved"() {
        given:
        RestBuilder rest = new RestBuilder()

        when: "save a new product"
        RestResponse response = rest.post("http://localhost:${serverPort}/product") {
            json([
                description: "screw"
            ])
        }

        then: "the code will be different to default value"
        response.status == 201
        Product product = Product.getAll().first()
        product
        product.code != Product.DEFAULT_CODE

        cleanup:
        Product.withNewSession {
            Product.withNewTransaction {
                Product.getAll()*.delete()
            }
        }
    }

The second call to save() is ignored.

Here is the sample app: https://github.com/AmaliaMV/neo4j-doubleSaved

The versions I am using are:

grailsVersion=3.3.5
gormVersion=6.1.10.BUILD-SNAPSHOT
grailsNeo4jPluginVersion=6.2.0.BUILD-SNAPSHOT

However, I checked that this is happening too if I use hibernate instead of neo4j.