Grails mapping sort on multiple fields :: Groovy sort on multiple map entries

Question

Stumped on this one. In Grails it seems one cannot define a default sort on multiple columns in domain mapping a la static mapping = { sort \'prop1 desc, prop2 asc\' }, or

Answer 1

Here is a Groovy solution. Still essentially implementing a Comparator though.

list.sort { map1, map2 -> map1.rowNum <=> map2.rowNum ?: map1.position <=> map2.position }

Answer 2

You can use String.format if you know max length. I assumed max 10 lenght:

list.sort { String.format('%010d%010d', it.rowNum, it.position) }

Answer 3

Thanks to the link from GreenGiant, we see that the issue is closed as fixed as of version 2.3.

There is also example code:

static mapping =
    { sort([lastname:'asc', name:'asc']) }

It is working for me in 2.4.3