GPMONGODB-83: NullPointer on Dynamic Properties on Domain Class with Unique Constraint

[graemerocher]

Original Reporter: kensipe
Environment: Mac OSX (Lion), JDK 1.6, Grails 1.3.7
Version: 1.0.0.M6
Migrated From: http://jira.grails.org/browse/GPMONGODB-83

with a User domain class with the following constraint:
{code}
import org.bson.types.ObjectId

class User {

ObjectId id
String name
List<String> roles = []
Address address

static constraints = {

}

static embedded = ['address']

static mapping = {
    name index: true, indexAttributes: [unique: true, dropDups: true]
}

def addRole(Role role) {
    roles << role.toString()
}

def boolean hasRole(String role) {
    roles.contains(role)
}

def boolean hasRole(Role role) {
    hasRole(role.toString())
}

}
{code}

if the follow code is executed (ex. BootStrap)

{code}
def user = new User(name: 'ken')
user['foo'] = "xxx"
user.save(flush: true)
{code}

The first go works... the second will fail with a NPE bring down the web app. The issues is reported as the line with the save... it appears to me that the save is attempted, however based on the constraints the user object will not exist, take seems to be followed by the setting of the dynamic property causing the problem. I tried to get the source code but the source link for github is incorrect. My take on it... if the object is null, there none of the dynamic properties matter. let me know if you need more.

[graemerocher]

burtbeckwith said:

[graemerocher]

kensipe said:
added all code for User. let me know if you need Address... however it just has 4 String properties. What may not have been communicated before is that this class has an embedded type, however the issue is still on setting the dynamic property on the "second" run of the save user. If you need me to, I have this separated into a sharable grails app. I can provide a drop of the entire project if needed.