SHA256
19 12 25
Добавил таблицу для хранения блоков
This commit is contained in:
AidarKC
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package shine.db.dao;
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import shine.db.SqliteDbController;
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import shine.db.entities.BlockEntry;
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import java.sql.*;
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/**
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* DAO для таблицы blocks.
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*
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* Правило:
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* - методы с Connection НЕ закрывают соединение
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* - методы без Connection сами открывают и закрывают соединение
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*
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* Важно:
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* - PRIMARY KEY выбран: (loginId, blockchainId, blockGlobalNumber, blockLineIndex, blockLineNumber)
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* Это означает: в рамках одной цепочки и одного globalNumber, каждая линия/номер уникальны.
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*/
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public final class BlocksDAO {
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private static volatile BlocksDAO instance;
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private final SqliteDbController db = SqliteDbController.getInstance();
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private BlocksDAO() { }
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public static BlocksDAO getInstance() {
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if (instance == null) {
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synchronized (BlocksDAO.class) {
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if (instance == null) instance = new BlocksDAO();
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}
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}
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return instance;
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}
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// -------------------- INSERT --------------------
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/** Вставка с внешним соединением. Соединение НЕ закрывает. */
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public void insert(Connection c, BlockEntry e) throws SQLException {
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String sql = """
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INSERT INTO blocks (
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loginId,
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blockchainId,
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blockGlobalNumber,
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blockGlobalPreHashe,
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blockLineIndex,
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blockLineNumber,
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blockLinePreHashe,
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msgType,
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blockByte,
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toLoginId,
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toBlockchainId,
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toBlockGlobalNumber,
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toBlockHashe
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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""";
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try (PreparedStatement ps = c.prepareStatement(sql)) {
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int i = 1;
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ps.setLong(i++, e.getLoginId());
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ps.setLong(i++, e.getBlockchainId());
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ps.setInt(i++, e.getBlockGlobalNumber());
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ps.setString(i++, nn(e.getBlockGlobalPreHashe()));
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ps.setInt(i++, e.getBlockLineIndex());
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ps.setInt(i++, e.getBlockLineNumber());
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ps.setString(i++, nn(e.getBlockLinePreHashe()));
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ps.setInt(i++, e.getMsgType());
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byte[] bytes = e.getBlockByte();
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if (bytes != null) ps.setBytes(i++, bytes);
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else ps.setNull(i++, Types.BLOB);
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ps.setLong(i++, e.getToLoginId());
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ps.setInt(i++, e.getToBlockchainId());
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ps.setInt(i++, e.getToBlockGlobalNumber());
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ps.setString(i++, nn(e.getToBlockHashe()));
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ps.executeUpdate();
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}
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}
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/** Вставка без внешнего соединения. Сам открывает/закрывает. */
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public void insert(BlockEntry e) throws SQLException {
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try (Connection c = db.getConnection()) {
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insert(c, e);
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}
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}
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// -------------------- UPSERT (SAVE) --------------------
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/**
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* Сохранить (upsert) с внешним соединением. Соединение НЕ закрывает.
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* Если запись с таким PK уже есть — обновляем поля.
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*/
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public void upsert(Connection c, BlockEntry e) throws SQLException {
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String sql = """
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INSERT INTO blocks (
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loginId,
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blockchainId,
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blockGlobalNumber,
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blockGlobalPreHashe,
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blockLineIndex,
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blockLineNumber,
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blockLinePreHashe,
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msgType,
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blockByte,
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toLoginId,
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toBlockchainId,
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toBlockGlobalNumber,
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toBlockHashe
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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ON CONFLICT(loginId, blockchainId, blockGlobalNumber, blockLineIndex, blockLineNumber)
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DO UPDATE SET
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blockGlobalPreHashe = excluded.blockGlobalPreHashe,
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blockLinePreHashe = excluded.blockLinePreHashe,
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msgType = excluded.msgType,
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blockByte = excluded.blockByte,
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toLoginId = excluded.toLoginId,
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toBlockchainId = excluded.toBlockchainId,
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toBlockGlobalNumber = excluded.toBlockGlobalNumber,
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toBlockHashe = excluded.toBlockHashe
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""";
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try (PreparedStatement ps = c.prepareStatement(sql)) {
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int i = 1;
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ps.setLong(i++, e.getLoginId());
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ps.setLong(i++, e.getBlockchainId());
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ps.setInt(i++, e.getBlockGlobalNumber());
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ps.setString(i++, nn(e.getBlockGlobalPreHashe()));
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ps.setInt(i++, e.getBlockLineIndex());
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ps.setInt(i++, e.getBlockLineNumber());
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ps.setString(i++, nn(e.getBlockLinePreHashe()));
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ps.setInt(i++, e.getMsgType());
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byte[] bytes = e.getBlockByte();
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if (bytes != null) ps.setBytes(i++, bytes);
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else ps.setNull(i++, Types.BLOB);
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ps.setLong(i++, e.getToLoginId());
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ps.setInt(i++, e.getToBlockchainId());
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ps.setInt(i++, e.getToBlockGlobalNumber());
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ps.setString(i++, nn(e.getToBlockHashe()));
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ps.executeUpdate();
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}
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}
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/** Сохранить (upsert) без внешнего соединения. Сам открывает/закрывает. */
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public void upsert(BlockEntry e) throws SQLException {
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try (Connection c = db.getConnection()) {
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upsert(c, e);
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}
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}
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// -------------------- SELECT --------------------
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/**
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* Получить блок по PK с внешним соединением. Соединение НЕ закрывает.
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*/
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public BlockEntry getByPk(Connection c,
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long loginId,
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long blockchainId,
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int blockGlobalNumber,
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int blockLineIndex,
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int blockLineNumber) throws SQLException {
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String sql = """
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SELECT
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loginId,
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blockchainId,
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blockGlobalNumber,
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blockGlobalPreHashe,
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blockLineIndex,
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blockLineNumber,
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blockLinePreHashe,
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msgType,
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blockByte,
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toLoginId,
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toBlockchainId,
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toBlockGlobalNumber,
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toBlockHashe
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FROM blocks
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WHERE
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loginId = ?
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AND blockchainId = ?
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AND blockGlobalNumber = ?
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AND blockLineIndex = ?
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AND blockLineNumber = ?
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""";
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try (PreparedStatement ps = c.prepareStatement(sql)) {
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ps.setLong(1, loginId);
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ps.setLong(2, blockchainId);
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ps.setInt(3, blockGlobalNumber);
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ps.setInt(4, blockLineIndex);
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ps.setInt(5, blockLineNumber);
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try (ResultSet rs = ps.executeQuery()) {
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if (!rs.next()) return null;
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return mapRow(rs);
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}
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}
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}
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/** Получить блок по PK без внешнего соединения. Сам открывает/закрывает. */
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public BlockEntry getByPk(long loginId,
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long blockchainId,
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int blockGlobalNumber,
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int blockLineIndex,
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int blockLineNumber) throws SQLException {
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try (Connection c = db.getConnection()) {
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return getByPk(c, loginId, blockchainId, blockGlobalNumber, blockLineIndex, blockLineNumber);
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}
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}
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// -------------------- UPDATE --------------------
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/**
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* Обновить (строго UPDATE) по PK с внешним соединением. Соединение НЕ закрывает.
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* Если строки нет — updateCount будет 0.
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*/
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public int update(Connection c, BlockEntry e) throws SQLException {
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String sql = """
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UPDATE blocks
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SET
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blockGlobalPreHashe = ?,
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blockLinePreHashe = ?,
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msgType = ?,
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blockByte = ?,
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toLoginId = ?,
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toBlockchainId = ?,
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toBlockGlobalNumber = ?,
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toBlockHashe = ?
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WHERE
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loginId = ?
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AND blockchainId = ?
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AND blockGlobalNumber = ?
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AND blockLineIndex = ?
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AND blockLineNumber = ?
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""";
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try (PreparedStatement ps = c.prepareStatement(sql)) {
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int i = 1;
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ps.setString(i++, nn(e.getBlockGlobalPreHashe()));
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ps.setString(i++, nn(e.getBlockLinePreHashe()));
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ps.setInt(i++, e.getMsgType());
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byte[] bytes = e.getBlockByte();
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if (bytes != null) ps.setBytes(i++, bytes);
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else ps.setNull(i++, Types.BLOB);
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ps.setLong(i++, e.getToLoginId());
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ps.setInt(i++, e.getToBlockchainId());
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ps.setInt(i++, e.getToBlockGlobalNumber());
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ps.setString(i++, nn(e.getToBlockHashe()));
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ps.setLong(i++, e.getLoginId());
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ps.setLong(i++, e.getBlockchainId());
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ps.setInt(i++, e.getBlockGlobalNumber());
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ps.setInt(i++, e.getBlockLineIndex());
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ps.setInt(i++, e.getBlockLineNumber());
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return ps.executeUpdate();
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}
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}
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/** Обновить без внешнего соединения. Сам открывает/закрывает. */
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public int update(BlockEntry e) throws SQLException {
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try (Connection c = db.getConnection()) {
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return update(c, e);
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}
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}
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// -------------------- DELETE (на всякий) --------------------
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/** Удалить по PK с внешним соединением. Соединение НЕ закрывает. */
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public int deleteByPk(Connection c,
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long loginId,
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long blockchainId,
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int blockGlobalNumber,
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int blockLineIndex,
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int blockLineNumber) throws SQLException {
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String sql = """
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DELETE FROM blocks
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WHERE
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loginId = ?
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AND blockchainId = ?
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AND blockGlobalNumber = ?
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AND blockLineIndex = ?
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AND blockLineNumber = ?
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""";
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try (PreparedStatement ps = c.prepareStatement(sql)) {
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ps.setLong(1, loginId);
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ps.setLong(2, blockchainId);
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ps.setInt(3, blockGlobalNumber);
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ps.setInt(4, blockLineIndex);
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ps.setInt(5, blockLineNumber);
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return ps.executeUpdate();
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}
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}
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/** Удалить по PK без внешнего соединения. Сам открывает/закрывает. */
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public int deleteByPk(long loginId,
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long blockchainId,
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int blockGlobalNumber,
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int blockLineIndex,
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int blockLineNumber) throws SQLException {
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try (Connection c = db.getConnection()) {
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return deleteByPk(c, loginId, blockchainId, blockGlobalNumber, blockLineIndex, blockLineNumber);
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}
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}
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// -------------------- MAPPER --------------------
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private BlockEntry mapRow(ResultSet rs) throws SQLException {
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BlockEntry e = new BlockEntry();
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e.setLoginId(rs.getLong("loginId"));
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e.setBlockchainId(rs.getLong("blockchainId"));
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e.setBlockGlobalNumber(rs.getInt("blockGlobalNumber"));
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e.setBlockGlobalPreHashe(rs.getString("blockGlobalPreHashe"));
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e.setBlockLineIndex(rs.getInt("blockLineIndex"));
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e.setBlockLineNumber(rs.getInt("blockLineNumber"));
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e.setBlockLinePreHashe(rs.getString("blockLinePreHashe"));
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e.setMsgType(rs.getInt("msgType"));
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e.setBlockByte(rs.getBytes("blockByte"));
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e.setToLoginId(rs.getLong("toLoginId"));
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e.setToBlockchainId(rs.getInt("toBlockchainId"));
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e.setToBlockGlobalNumber(rs.getInt("toBlockGlobalNumber"));
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e.setToBlockHashe(rs.getString("toBlockHashe"));
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return e;
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}
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private static String nn(String s) { return s == null ? "" : s; }
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}
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