Grails包括createCriteria中的闭包

Question

I have a grails application in which I now need to do a search. I have created a closure which contains the common conditions.

def criteria = {
        if(pageSize){
            delegate.maxResults( pageSize )
        }
        if(offset){
            delegate.firstResult( offset )
        }
    ........
}

And then i want to use this inside create criteria alone with some specific conditions

objects = DomainObkect.createCriteria().list {

                    ne "booleanCheck", true
                    eq "value", value
                    criteria
                } 

Is there a way for this to take effect? Now the criteria options are not being executed

Thanks in Advance

Answer 1

Sure. Something like:

Closure searchRestriction = { builder ->
            if(pageSize){
                builder.maxResults( pageSize )
            }
            if(offset){
                builder.firstResult( offset )
            }
        }
        def criteria = DomainObkect.createCriteria()
        objects = criteria.list {
            ne "booleanCheck", true
            eq "value", value
            searchRestriction(criteria)
        }

Answer 2

This question is asked earlier as well Reusing part of Grails criteria closure

You can use namedqueries and you delegate criterias as well. Some of the blogs that you can check http://www.tothenew.com/blog/grails-data-binding-criteria-reuse/ http://www.tothenew.com/blog/reusing-grails-criteria-for-multiple-domains-using-closure-delegate/