MongoDB Polymorphism

    interface Profile {
        Integer getDuration()
    }

    import org.bson.types.ObjectId
    class Profile1 implements Profile {
        ObjectId id
        String profileName
        String type
        Date effectiveStartDate
        Date effectiveEndDate

        Integer getDuration(){
            effectiveEndDate - effectiveStartDate
        }

        static mapWith = "mongo"
    }

    import org.bson.types.ObjectId
    class Profile2 implements Profile{
        ObjectId id
        String profileName
        String type
        Date effectiveStartDate
        Date effectiveEndDate

        static mapWith = "mongo"

        Integer getDuration(){
            effectiveEndDate - effectiveStartDate
        }
    }
    class User {
        ObjectId id

        static mapWith = "mongo"
        static embedded = ['profiles']

        String email
        List<Profile> profiles
    }

    class UserController {

        def index() {
            def profile1 = new Profile1(type: 'Individual',
                                        profileName: 'IndividualProfile',
                                        effectiveStartDate: new Date(),
                                        effectiveEndDate: new Date() + 100) as Profile
            def profile2 = new Profile2(type: 'Company',
                                        profileName: 'CompanyProfile',
                                        effectiveStartDate: new Date(),
                                        effectiveEndDate: new Date() + 50) as Profile

            println profile1.duration //prints 100
            println profile2.duration //prints 50

            def user = new User(profiles: [profile1, profile2], email: 'abc@gmail.com').save(flush: true)

            render user as JSON
        }
    }

    //db.user.find()
    {
        "_id" : ObjectId("51ba8d55892cb98368b2f1e5"),
        "email" : "abc@gmail.com",
        "profiles" : [{
                "effectiveEndDate" : ISODate("2013-09-22T03:26:13.396Z"),
                "effectiveStartDate" : ISODate("2013-06-14T03:26:13.396Z"),
                "profileName" : "IndividualProfile",
                "type" : "Individual"
            },
            {
                "effectiveEndDate" : ISODate("2013-08-03T03:26:13.423Z"),
                "effectiveStartDate" : ISODate("2013-06-14T03:26:13.423Z"),
                "profileName" : "CompanyProfile",
                "type" : "Company"
            }
        ],
        "version" : 0
    }

    //Browser Render:
{
    "class": "com.example.User",
    "id": {
        "class": "org.bson.types.ObjectId",
        "inc": 1756557797,
        "machine": -1993557629,
        "new": false,
        "time": 1371180373000,
        "timeSecond": 1371180373
    },
    "email": "abc@gmail.com"
}