Added public method to QueryUtils.cls that accepts a string of the SObject API name and returns back a query string with all fields for the SObject.

Author: jongpie

src/classes/QueryUtils.cls

@@ -1,4 +1,24 @@
 public class QueryUtils {
+	public static String getSObjectQuery(String sobjectApiName) {
+		Schema.SObjectType sobjectType = Schema.getGlobalDescribe().get(sobjectAPIName);
+        
+        List<String> fields = new List<String>();
+        Map<String, Schema.SObjectField> fieldMap = sobjectType.getDescribe().fields.getMap();
+		 for(Schema.SObjectField sobjectField : fieldMap.values()) {
+			fields.add(sobjectField.getDescribe().getName());
+		 }
+        
+        return buildQuery(sobjectApiName, fields);
+	}
+    
+    private static String buildQuery(String sobjectApiName, List<String> fields) {
+        String queryFields = String.join(fields, ', ' );
+        String query = 'SELECT ' + queryFields
+			+ ' FROM ' + sobjectApiName;
+        
+        return query;
+    }
+
 	private static String getQueryFields(List<Schema.FieldSetMember> fieldSet) {
 		String queryFields = '';
 		for(Schema.FieldSetMember field : fieldSet) {