Get fieldnames from List

Question

I have the next problem, when I get the output susc I get the next line:

12:59:48:144 USER_DEBUG [32]|DEBUG|Susc: DopplerListSubscriber__c:{Id=a0246000001nTMeAAM, Contact__c=00346000002O4YvAAK, DopplerList__c=a0046000001OvCGAA0}

The issue comes here, when I need to access this iterated List and read the fieldnames Contact__c without adding in an explicit way the fieldname to the susc.Contact__c call.

Here is the code:

Map<String, String> LookupFieldsMap = DopplerListCriteriasUtil.getAvailableLookupObjects();

// Build query with the availableLookups and Fields Mapping
List<DopplerListSubscriber__c> sobjList = Database.query(DopplerSQLBuilder.buildSOSQLDopplerListSubscriber(listId));

Map<String, String> dopplerWrapper = new Map<String, String>();

    for (DopplerListSubscriber__c susc : sobjList) {
        for (String loField : LookupFieldsMap.values()) {

            System.debug('Susc: ' + susc);
            System.debug('LookupFields: ' + loField);
        }
    }

How can I access the susc item List Array to get the fields without naming them, since if I do this I do see them:

String asd = susc.Contact__c;

Answer 1

Here is the way in case you don't trust Sobject class:-

Account acc = new Account(Name='Ashwani', AccountNumber='1234567');
String accString = JSON.serialize(acc);
Map<String,Object> attributes = (Map<String,Object>)JSON.deserializeUntyped(accString

for (DopplerListSubscriber__c susc : sobjList) 
{
     for (String loField : LookupFieldsMap.values()) 
     {

          Boolean shouldDoLogic = attributes.containsKey(loField);
          if(shouldDoLogic)
          {
                // Go Ahead
          }
     }
}

If you trust:

for (DopplerListSubscriber__c susc : sobjList) 
    {
         for (String loField : LookupFieldsMap.values()) 
         {

              Boolean shouldDoLogic = susc. getPopulatedFieldsAsMap.containsKey(loField);
              if(shouldDoLogic)
              {
                    // Go Ahead
              }
         }
    }

You can tweak the above logic to get the desired result.