1 files changed, 13 insertions, 0 deletions
diff --git a/src/main/java/design/persistence/PersonalDatabase.java b/src/main/java/design/persistence/PersonalDatabase.java
index a045d59..886bd0b 100644
--- a/src/main/java/design/persistence/PersonalDatabase.java
+++ b/src/main/java/design/persistence/PersonalDatabase.java
@@ -8,8 +8,21 @@ public interface PersonalDatabase {
     PersonalDatabase INSTANCE = new JSONPersonalDatabase("data/personaldb.json");
 
     Golfer[] getGolfers();
+
     Golfer getGolfer(String name);
+
     void addGolfer(Golfer golfer) throws IOException;
+
     void removeGolfer(Golfer golfer) throws IOException;
+
     void updateGolfer(Golfer golfer) throws IOException;
+
+    default Golfer loadOrCreateGolfer(String username, String fullNameIfNew, String pwIfNew) throws IOException {
+        Golfer g = getGolfer(username);
+        if (g != null)
+            return g;
+        g = new Golfer(fullNameIfNew, username, pwIfNew);
+        addGolfer(g);
+        return g;
+    }
 }