Removed unused Table code

- Deprecated Table#execute and Table#executeUnsafe
- Removed Table#addColumns and Table#removeColumns
- Removed now unused tables.move.TransferTable

Plan/common/src/main/java/com/djrapitops/plan/system/database/databases/sql/tables/Table.java

@@ -55,7 +55,7 @@ public abstract class Table {
 
     protected void createTable(String sql) throws DBInitException {
         try {
-            execute(sql);
+            db.execute(sql);
         } catch (DBOpException e) {
             throw new DBInitException("Failed to create table: " + tableName, e);
         }
@@ -82,7 +82,9 @@ public abstract class Table {
      *
      * @param statementString Statement to execute in the database.
      * @return true if rows were updated.
+     * @deprecated Use {@code db.execute(statements)}
      */
+    @Deprecated
     protected boolean execute(String statementString) {
         return db.execute(statementString);
     }
@@ -91,7 +93,9 @@ public abstract class Table {
      * Used to execute statements while possible exceptions are suppressed.
      *
      * @param statements SQL statements to setUp
+     * @deprecated Use {@code db.executeUnsafe(statements)}
      */
+    @Deprecated
     protected void executeUnsafe(String... statements) {
         db.executeUnsafe(statements);
     }
@@ -113,28 +117,7 @@ public abstract class Table {
      * Removes all data from the table.
      */
     public void removeAllData() {
-        execute("DELETE FROM " + tableName);
+        db.execute("DELETE FROM " + tableName);
-    }
-
-    protected void addColumns(String... columnInfo) {
-        for (int i = 0; i < columnInfo.length; i++) {
-            columnInfo[i] = "ALTER TABLE " + tableName + " ADD " + (supportsMySQLQueries ? "" : "COLUMN ") + columnInfo[i];
-        }
-        executeUnsafe(columnInfo);
-    }
-
-    protected void removeColumns(String... columnNames) {
-        if (supportsMySQLQueries) {
-            StringBuilder sqlBuild = new StringBuilder();
-            sqlBuild.append("ALTER TABLE ").append(tableName);
-            for (int i = 0; i < columnNames.length; i++) {
-                sqlBuild.append(" DROP COLUMN ").append(columnNames[i]);
-                if (i < columnNames.length - 1) {
-                    sqlBuild.append(",");
-                }
-            }
-            executeUnsafe(sqlBuild.toString());
-        }
     }
 
     @Override

Plan/common/src/main/java/com/djrapitops/plan/system/database/databases/sql/tables/move/TransferTable.java

@@ -1,50 +0,0 @@
-/*
- *  This file is part of Player Analytics (Plan).
- *
- *  Plan is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU Lesser General Public License v3 as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  Plan is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public License
- *  along with Plan. If not, see <https://www.gnu.org/licenses/>.
- */
-package com.djrapitops.plan.system.database.databases.sql.tables.move;
-
-import com.djrapitops.plan.system.database.databases.sql.SQLDB;
-import com.djrapitops.plan.system.database.databases.sql.statements.TableSqlParser;
-import com.djrapitops.plan.system.database.databases.sql.tables.Table;
-
-/**
- * Abstract table used for transferring a whole table to a new table.
- *
- * @author Rsl1122
- */
-public class TransferTable extends Table {
-
-    public TransferTable(SQLDB db) {
-        super("", db);
-    }
-
-    @Override
-    public void createTable() {
-        throw new IllegalStateException("Method not supposed to be used on this table.");
-    }
-
-    protected void renameTable(String from, String to) {
-        String sql = supportsMySQLQueries ?
-                "RENAME TABLE " + from + " TO " + to :
-                "ALTER TABLE " + from + " RENAME TO " + to;
-        execute(sql);
-    }
-
-    protected void dropTable(String name) {
-        execute(TableSqlParser.dropTable(name));
-    }
-
-}