I am trying to implement multiGet operation in Spring on Redis, it throws me an error - redis

Question

I am trying to execute multiGet function in Spring on Redis. It throws me an error. I have implemented get function successfully but while implementing multiGet it asks me for a Collection as second parameter. I am not sure what to enter? Can someone please guide me here.
Here is my code for multiGet()
Method definition:
#Override
public User findById_MultiGet(String id) {
return (User)hashOperations.multiGet("USER", id);
}
Code In Controller :
#GetMapping("Map/MultiGet/{id}")
public User allMultiGet(#PathVariable("id") final String id) {
// MultiGet function
return userRepository.findById_MultiGet(id);
}
Error for above multiget method is multiget(Object, Collection) type not (String,String) type
Below code for Get function is working.
public User findById(String id) {
return (User)hashOperations.get("USER", id);
}
Code In Controller for Get function :
#GetMapping("Map/Get/{id}")
public User allGet(#PathVariable("id") final String id) {
// Get function
return userRepository.findById(id);
}

Answer 1

For multiGet the second parameter should be a Collection like a List (in case you want the values of the list returned as result on the same positions as their belonging keys in the input list) or a Set.
In your example this would be something like this:
List<Object> values = hashOperations.multiGet("USER", Arrays.asList("id", "name"));
Object id = values.get(0);
Object name = values.get(1);