Assigned domain class id wierdness with Grails
//in bootstrap
def it1 = new ItemType(id:4,name:'feature')
it1.save()
//domanin class
class ItemType {
    String name
    int id

    static constraints = {
        id(unique:true,blank:false)
        name(blank:false)
    }

    static mapping = {
        id column: 'ItemTypeId', generator:'assigned'
        name column: 'Name'
        version false
    }
}

//in bootstrap
def it1 = new ItemType(name:'feature')
it1.id=4
it1.save()
//domanin class
class ItemType {
    String name
    //int id

    static constraints = {
        id(unique:true,blank:false)
        name(blank:false)
    }

    static mapping = {
        id column: 'ItemTypeId', generator:'assigned'
        name column: 'Name'
        version false
    }
}