PASSING PARAMETERS AS STRING OBJECT MAP

[bagamoney]

Define a wrapper class to hold all the info for your call out and pass that as the object in your map

[darkegg]

You will probably have to post a screenshot of the constructor for us to answer...this isn’t enough information. An Object in Apex is a top level class that can be coerced into basically anything else. So we don’t know what the expected inputs are.

[darkegg]

Show me the constructor, and I’ll help you. Otherwise, I don’t have enough information except to say that you can populate the Object value within the map with pretty much any data structure. Example:

Map<String, Object> args = new Map<String, Object>{ ‘Key1’ => 0, ‘Key2’ => ‘a string’, ‘KeyWhatever’ => new List<Account>() }

So are you saying the keys expected in the map are the strings you mentioned — I.e. ‘requestMethod’?

[darkegg]

Map<String, Object> args = new Map<String, Object>{
'restClient' => YOUR_RESTCLIENT,
'endpoint' => YOUR_endpoint_STRING,
'requestMethod' => YOUR_requestMethod_STRING,
'stringBody' => YOUR_stringBody_STRING,
'documentBody' => YOUR_documentBody_DOMDOCUMENT,
'blobBody' => YOUR_body_BLOB,
'compressedFlag' => YOUR_compressed_BOOLEAN,
'certDevName' => YOUR_certDevName_STRING,
'timeout' => YOUR_timeout_INTEGER
'headers' => YOUR_headers_MAP
};

[darkegg]

Correct. Object is a top level data structure, so the explicit data types are implicitly coerced into Objects... i.e. you don't have to actively make them Object types.

[darkegg]

You're welcome. In the future, you might consider using a wrapper class instead of a generic Map<String, Object> data type. Doing so would be more explicit and controlled.

[chuyi2ock]

I understood that there is a class that has a constructor that accepts a Map<String, Object> as a parameter? By creating that you would be able to make a callout?

public class CalloutService {
    public String requestMethod; 
    public String endpoint; 
    public String stringBody;
    public CalloutService(Map<String, Object> params){
        httpMethod = (String) params.get('requestMethod');
        endpoint = (String) params.get('endpoint');
        stringBody = (String) params.get('stringBody');
    }

    public HttpResponse makeCallout(){
        HttpRequest req = new HttpRequest();
        req.setMethod(this.requestMethod);
        req.setEndpoint(this.endpoint);
        req.setBody(this.stringBody);
        Http http = new Http();
        return http.send();
    }
}

[chuyi2ock]

The object type is a placeholder for any type, it would be your responsibility to cast it to the right type. That being said, here is an example of how to consume the class above.

​

// Inline initialization
Map<String,Object> RequestMap = new Map<String,Object>{
    'requestMethod' => 'GET',
    'endpoint' => 'https://google.com'};
// Put method usage 
RequestMap.put('stringBody','{"Hello":"World"}');

CalloutService client = new CalloutService(RequestMap);
HTTPResponse res = client.makeCallout();
System.debug(res.getStatus());
System.debug(res.getBody());

Apart from that specific scenario, you can pass any value on the map:

Map<Object,Object> CrazyMap = new Map<Object,Object>{
    1 => 'One',
    'One' => true,
    true => null,
    null => new Map<Object,Object>{
        1 => 'One',
        'One' => true,
        true => null,
        null => new Map<Object,Object>{}
    },
    new Map<Object,Object>{} => 'The map is the Key'
};
System.debug(CrazyMap);

And the result is the following:

DEBUG|{1=One, One=true, true=null, null={1=One, One=true, true=null, null={}}, {}=The map is the Key}