CODEWITHSUNDEEP
jsondictionarygroovy
Bnaffy
Bnaffy

Reputation: 129

Get the key from map of map

I have a map like so:

[One:[example:value1, example2:value2] ,Two[example 1:value3, example2:value4]]

I'm am matching value1 from a value in another map, but I need to get the keys,either One or Two depending on if it is a match.

So if I say:

if( value1.equals (otherMapValue))
    Return One

This map is from a json response so if there is a better way to do this besides a map I can change it. Sorry for the formatting I'm using my phone

Upvotes: 1

Views: 97

Answers (1)

dmahapatro
dmahapatro

Reputation: 50285

This should do:

def someMethod(valueFromOthermap) {
    def map = [
        One: [example1: 'value1', example2:'value2'],
        Two: [example1: 'value3', example2:'value4']
    ]

    map.findResults { k, v ->
        valueFromOthermap in v.values() ? k : null
    }
}

assert someMethod('value1') == ['One']

If you are looking for the first matching key instead of a list of keys, then use findResult instead of findResults, everything else remains unchanged.

UPDATE:
Regarding JSON to Map parsing, a JSON resonse can be easily parsed to Map as shown below: 

Map responseMap = new groovy.json.JsonSlurper().parseText( jsonResponseString )

Upvotes: 1

Related Questions