The ""not-null property reference ..." exception occurs when Hibernate
tries to save to the DB and finds a "dependent object" missing. I
would expect it to be caused by the save(), though the error won't
appear until the session is flushed (as farf as I know).
Are you saying that if you remove the line
buyVacationHomeService.callRealtor() // Error occurs here
you don't get the exception?
Try changing the save() to save(flush:true) & see what happens.
--
Jonathan Rosenberg
Founder & Executive Director
Tabby's Place, a Cat Sanctuary
http://www.tabbysplace.org/On Tue, Mar 27, 2012 at 1:22 PM, ChrisGen <
[hidden email]> wrote:
> I'm receiving a "not-null property references a null or transient value"
> error on an object that failed validation. The error occurs whenever I call
> a Service. The Service method just contains a "println". Can someone
> explain to me why this happens? Why does the error go away if I comment out
> the Service call?
>
> I'm pretty new to Grails, and this is my first post in this forum. Glad to
> take any suggestions anyone has.
>
> Here's my setup:
>
> ========= ./controllers/hello/VacationController.groovy ===============
> class VacationController {
>
> def buyVacationHomeService
>
> def index = {
> // Initial data setup
> def child = new Child()
> def parent = new Parent(pets:5)
> parent.addToChildren(child).save()
>
> // Recreate issue
> def currParent = Parent.get(1)
> currParent.pets = 50 // Make sure we fail validation
> currParent.removeFromChildren(Child.get(1))
>
> if (currParent.validate()) {
> println "Valid"
> } else {
> println "Invalid" // This will always happen
> }
>
> buyVacationHomeService.callRealtor() // Error occurs here
> }
> }
>
> ========= ./domain/hello/Parent.groovy ===============
> class Parent {
>
> Integer pets
> static hasMany = [ children:Child ]
>
> static constraints = {
> pets(range:0..5)
> }
>
> static mapping = {
> children cascade: "all-delete-orphan"
> }
> }
>
> ========= ./domain/hello/Child.groovy ===============
> class Child {
> static belongsTo = [ myParent: Parent ]
> }
>
> ========= ./services/hello/BuyVacationHomeService.groovy ===============
> class BuyVacationHomeService {
> def callRealtor() {
> println "callRealtor()"
> }
> }
>
> ========= ./views/vacation/index.gsp ===============
> <html><head><title>Title</title></head><body>Body</body></html>
>
>
>
> --
> View this message in context:
http://grails.1312388.n4.nabble.com/Call-to-Service-causes-not-null-property-references-a-null-or-transient-value-tp4509578p4509578.html> Sent from the Grails - user mailing list archive at Nabble.com.
>
> ---------------------------------------------------------------------
> To unsubscribe from this list, please visit:
>
>
http://xircles.codehaus.org/manage_email>
>
---------------------------------------------------------------------
To unsubscribe from this list, please visit:
http://xircles.codehaus.org/manage_email
Locked
