comparing maps and setting the values of one map to anothe rmap - groovy

Question

I have two maps as below(these are the logs of my output...sorry for the bad groovy)
map1 = [
[ "name1":value1, "name2":value2, "name3":value3 ],
[ "name1":value1, "name2":value20, "name3":value30 ]
]
map2 = [
[ "name1":value1, "name2":value4, "name3":value5, "name4":value6 ],
[ "name1":value1, "name2":value7, "name3":value8, "name4":value9 ]
]
I need to set the values of name2 and name3 of map1 to name2 and name3 of map2 when "name1":value1 in both the maps
Required output:
map2 = [
[ "name1":value1, "name2":value2, "name3":value3, "name4":value6 ],
[ "name1":value1, "name2":value20, "name3":value30, "name4":value9 ]
]
I tried looping through both of them, but there is an overwrite(as it is a map) and the result is as below
map2 = [
[ "name1":value1, "name2":value20, "name3":value30, "name4":value9 ],
[ "name1":value1, "name2":value20, "name3":value30, "name4":value9 ]
]

Answer 1

First of all, they (map1 and map2) are lists and not maps.
Taking into consideration, the cardinality of both the lists are same, simplistically you can achieve the same by:
list2.eachWithIndex{item, i ->
if(list2[i].name1 == list1[i].name1){
list2[i].name2 = list1[i].name2
list2[i].name3 = list1[i].name3
}
}
assert list2 == [
[ "name1":'value1', "name2":'value2', "name3":'value3', "name4":'value6' ],
[ "name1":'value1', "name2":'value20', "name3":'value30', "name4":'value9' ]
]