Add getAllValues to fflib_ArrayUtils

Signed-off-by: WimVelzeboer <wimvelzeboer@protonmail.com>

sfdx-source/apex-extensions/main/default/classes/utils/fflib_ArrayUtils.cls

@@ -73,6 +73,26 @@ public class fflib_ArrayUtils
 		return objects.get(0);
 	}
 
+	/**
+	 * Gets all String values for the given Ids
+	 *
+	 * @param stringsByIds the data map to process
+	 * @param idsToRetrieve The keys for which to retrieve their string values
+	 *
+	 * @return Returns all the values for the provided keys
+	 */
+	public static Set<String> getAllValues(Map<Id, String> stringsByIds, Set<Id> idsToRetrieve)
+	{
+		Set<String> result = new Set<String>();
+		for (Id id : idsToRetrieve)
+		{
+			if (stringsByIds.containsKey(id) == false) continue;
+
+			result.add(stringsByIds.get(id));
+		}
+		return result;
+	}
+
 	/**
 	 * Validates if a list is empty
 	 *

sfdx-source/apex-extensions/tests/classes/utils/fflib_ArrayUtilsTest.cls

@@ -238,6 +238,27 @@ private class fflib_ArrayUtilsTest
         System.assertEquals(8, result, 'Did not return the last value in the list of objects');
     }
 
+    @IsTest
+    static void itShouldReturnAllValuesForTheGivenIds()
+    {
+        // GIVEN a map with String by Ids
+        Id accountIdA = fflib_IDGenerator.generate(Schema.Account.SObjectType);
+        Id accountIdB = fflib_IDGenerator.generate(Schema.Account.SObjectType);
+        Id accountIdC = fflib_IDGenerator.generate(Schema.Account.SObjectType);
+        Map<Id, String> stringsByIds = new Map<Id, String>
+        {
+                accountIdA => 'Account A',
+                accountIdB => 'Account B',
+                accountIdC => 'Account C'
+        };
+
+        // WHEN we retrieve a sub-set of Ids
+        Set<String> result = fflib_ArrayUtils.getAllValues(stringsByIds, new Set<Id> {accountIdA, accountIdB});
+
+        // THEN we get the values of the provide sub-set Ids
+        System.assert(result.containsAll(new Set<String>{'Account A', 'Account B'}));
+    }
+
     private static List<Datetime> generateDateTimes()
     {
         return new List<Datetime>