small cleanup

common/src/main/java/me/lucko/luckperms/data/Datastore.java

@@ -12,13 +12,13 @@ public abstract class Datastore {
     protected final LuckPermsPlugin plugin;
 
     @Getter
-    public String name;
+    public final String name;
 
     @Getter
     @Setter
     private boolean acceptingLogins;
 
-    public Datastore(LuckPermsPlugin plugin, String name) {
+    protected Datastore(LuckPermsPlugin plugin, String name) {
         this.plugin = plugin;
         this.name = name;
         this.acceptingLogins = true;

common/src/main/java/me/lucko/luckperms/data/methods/MySQLDatastore.java

@@ -13,7 +13,7 @@ public class MySQLDatastore extends SQLDatastore {
     private static final String CREATETABLE_USERS = "CREATE TABLE IF NOT EXISTS `lp_users` (`uuid` VARCHAR(36) NOT NULL, `name` VARCHAR(16) NOT NULL, `perms` TEXT NOT NULL, PRIMARY KEY (`uuid`)) ENGINE=InnoDB DEFAULT CHARSET=latin1;";
     private static final String CREATETABLE_GROUPS = "CREATE TABLE IF NOT EXISTS `lp_groups` (`name` VARCHAR(36) NOT NULL, `perms` TEXT NULL, PRIMARY KEY (`name`)) ENGINE=InnoDB DEFAULT CHARSET=latin1;";
 
-    private MySQLConfiguration configuration;
+    private final MySQLConfiguration configuration;
     private HikariDataSource hikari;
 
     public MySQLDatastore(LuckPermsPlugin plugin, MySQLConfiguration configuration) {

common/src/main/java/me/lucko/luckperms/data/methods/SQLDatastore.java

@@ -39,9 +39,9 @@ public abstract class SQLDatastore extends Datastore {
     private static final String UUIDCACHE_SELECT = "SELECT uuid FROM lp_uuid WHERE name=?";
     private static final String UUIDCACHE_UPDATE = "UPDATE lp_uuid SET uuid=? WHERE name=?";
 
-    private Gson gson;
+    private final Gson gson;
 
-    public SQLDatastore(LuckPermsPlugin plugin, String name) {
+    SQLDatastore(LuckPermsPlugin plugin, String name) {
         super(plugin, name);
         gson = new Gson();
     }
@@ -317,7 +317,7 @@ public abstract class SQLDatastore extends Datastore {
     }
 
     private class Closer {
-        private List<AutoCloseable> objects = new ArrayList<>();
+        private final List<AutoCloseable> objects = new ArrayList<>();
 
         public void add(AutoCloseable a) {
             objects.add(a);

common/src/main/java/me/lucko/luckperms/data/methods/SQLiteDatastore.java

@@ -13,7 +13,7 @@ public class SQLiteDatastore extends SQLDatastore {
     private static final String CREATETABLE_USERS = "CREATE TABLE IF NOT EXISTS `lp_users` (`uuid` VARCHAR(36) NOT NULL, `name` VARCHAR(16) NOT NULL, `perms` TEXT NOT NULL, PRIMARY KEY (`uuid`));";
     private static final String CREATETABLE_GROUPS = "CREATE TABLE IF NOT EXISTS `lp_groups` (`name` VARCHAR(36) NOT NULL, `perms` TEXT NULL, PRIMARY KEY (`name`));";
 
-    private File file;
+    private final File file;
     private Connection connection = null;
 
     public SQLiteDatastore(LuckPermsPlugin plugin, File file) {