Grails 3.2-通过分页和一对多关联进行选择

Question

Grails 3.2 comes with some major updates to GORM. How would one do a query like:

def c = Cat.createCriteria()
List<Cat> data = c.listDistinct(){
    createAlias('furType', 'ft)
    createAlias('kittens', 'kitten')
    createAlias('kitten.furType', 'kft')
    or {
        ilike('ft.color', 'orange')
        ilike('kft.color', 'orange')
    }
    maxResults 10
    firstResult 10
}

Currently this query only shows 5 results instead of 10 when each cat has two kittens.

Edit: Edited example to show how duplicate Cats can get called.

Answer 1

Try this.

def c = Cat.createCriteria()
List<Cat> data = c.listDistinct(max: 10, offset: 10){
    createAlias('kittens', 'kitten')
    createAlias('kitten.furType', 'kft')
    ilike('kft.color', 'orange')
}

A better way, if you are paginating by creating links, you can create links in the following format

http://example.com/controller/action?offset=10

and then in your controller action, you can do the following

params.max = 10
def c = Cat.createCriteria()
List<Cat> data = c.listDistinct(params){
    createAlias('kittens', 'kitten')
    createAlias('kitten.furType', 'kft')
    ilike('kft.color', 'orange')
}