Fix real name update.

src/main/java/fr/xephi/authme/datasource/CacheDataSource.java

@@ -230,6 +230,15 @@ public class CacheDataSource implements DataSource {
         cachedAuths.invalidate(oldOne);
     }
 
+    @Override
+    public boolean updateRealName(String user, String realName) {
+        boolean result = source.updateRealName(user, realName);
+        if (result) {
+            cachedAuths.refresh(user);
+        }
+        return result;
+    }
+
     @Override
     public List<PlayerAuth> getAllAuths() {
         return source.getAllAuths();

src/main/java/fr/xephi/authme/datasource/DataSource.java

@@ -204,6 +204,7 @@ public interface DataSource {
      */
     void updateName(String oldOne, String newOne);
 
+    boolean updateRealName(String user, String realName);
     /**
      * Method getAllAuths.
      *

src/main/java/fr/xephi/authme/datasource/FlatFile.java

@@ -716,6 +716,11 @@ public class FlatFile implements DataSource {
         this.removeAuth(oldOne);
     }
 
+    @Override
+    public boolean updateRealName(String user, String realName) {
+        return false;
+    }
+
     @Override
     public List<PlayerAuth> getAllAuths() {
         BufferedReader br = null;

src/main/java/fr/xephi/authme/datasource/MySQL.java

@@ -885,6 +885,21 @@ public class MySQL implements DataSource {
         }
     }
 
+    @Override
+    public boolean updateRealName(String user, String realName) {
+        try (Connection con = getConnection()) {
+            String sql = "UPDATE " + tableName + " SET " + col.REAL_NAME + "=? WHERE " + col.NAME + "=?;";
+            PreparedStatement pst = con.prepareStatement(sql);
+            pst.setString(1, realName);
+            pst.setString(2, user);
+            pst.executeUpdate();
+            return true;
+        } catch (SQLException ex) {
+            logSqlException(ex);
+        }
+        return false;
+    }
+
     @Override
     public List<PlayerAuth> getAllAuths() {
         List<PlayerAuth> auths = new ArrayList<>();

src/main/java/fr/xephi/authme/datasource/SQLite.java

@@ -593,6 +593,20 @@ public class SQLite implements DataSource {
         }
     }
 
+    @Override
+    public boolean updateRealName(String user, String realName) {
+        String sql = "UPDATE " + tableName + " SET " + col.REAL_NAME + "=? WHERE " + col.NAME + "=?;";
+        try(PreparedStatement pst = con.prepareStatement(sql)) {
+            pst.setString(1, realName);
+            pst.setString(2, user);
+            pst.executeUpdate();
+            return true;
+        } catch (SQLException ex) {
+            logSqlException(ex);
+        }
+        return false;
+    }
+
     @Override
     public List<PlayerAuth> getAllAuths() {
         List<PlayerAuth> auths = new ArrayList<>();