Groovy: Maps deep nesting

I got a map matrix that looks like this:

def matrix = [
    field1:[role1:[state1:["f1r1s1",true],
                   state2:["f1r1s2",false]],
            role2:[state1:["f1r2s1",true],
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           ],
    field2:[role1:[state1:["f2r1s1",true],
                   state2:["f2r1s2",false]],
            role2:[state1:["f2r2s1",true],
                   state2:["f1r2s2",false]]
           ]
]

I am trying to get all fields where role is "role1" and state is "state1". Easy? Help pls.

---

matrix.values().role1.state1

works for this case, as you've only got a single level of unknown to search through.

---

You can do:

def map = matrix.inject([:]) { map, elem -> map << [ (elem.key): elem.value[ 'role1' ][ 'state1' ] ] }

to get your required result:

[field1:[f1r1s1, true], field2:[f2r1s1, true]]