Java Code Examples for org.apache.ibatis.mapping.BoundSql#getSql()

@Override
public Object intercept(Invocation invocation) throws Throwable {

    //获取方法的第0个参数，也就是MappedStatement。@Signature注解中的args中的顺序
    MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
    //获取sql命令操作类型
    SqlCommandType sqlCommandType = mappedStatement.getSqlCommandType();
    final Object[] queryArgs = invocation.getArgs();
    final Object parameter = queryArgs[1];

    BoundSql boundSql = mappedStatement.getBoundSql(parameter);
    String sql = boundSql.getSql();

    if (SqlCommandType.DELETE.equals(sqlCommandType)) {
        //格式化sql
        sql = sql.replace("\n", "");
        if (!sql.toLowerCase().contains(SQL_DELETE_WHERE)) {
            sql = sql.replace(" ", "");
            logger.warn("删除语句中没有where条件,sql为:{}", sql);
            throw new SQLException("删除语句中没有where条件");
        }
        return invocation.proceed();
    }

    return null;
}
 

@Override
public int doUpdate(MappedStatement ms, Object parameterObject) throws SQLException {
  final Configuration configuration = ms.getConfiguration();
  final StatementHandler handler = configuration.newStatementHandler(this, ms, parameterObject, RowBounds.DEFAULT, null, null);
  final BoundSql boundSql = handler.getBoundSql();
  final String sql = boundSql.getSql();
  final Statement stmt;
  if (sql.equals(currentSql) && ms.equals(currentStatement)) {
    int last = statementList.size() - 1;
    stmt = statementList.get(last);
    BatchResult batchResult = batchResultList.get(last);
    batchResult.addParameterObject(parameterObject);
  } else {
    Connection connection = getConnection(ms.getStatementLog());
    stmt = handler.prepare(connection);
    currentSql = sql;
    currentStatement = ms;
    statementList.add(stmt);
    batchResultList.add(new BatchResult(ms, sql, parameterObject));
  }
  handler.parameterize(stmt);
  handler.batch(stmt);
  return BATCH_UPDATE_RETURN_VALUE;
}
 

@Override
public Object intercept(Invocation invocation) throws Throwable {
    StatementHandler statementHandler = (StatementHandler) invocation.getTarget();
    BoundSql boundSql = statementHandler.getBoundSql();
    if (log.isDebugEnabled()) {
        log.debug("raw SQL : " + boundSql.getSql());
    }
    if (boundSql.getSql() == null || boundSql.getSql().isEmpty() || boundSql.getSql().contains(" limit ")) {
        return invocation.proceed();
    }
    MetaObject metaStatementHandler = null;
    RowBounds rowBounds = (RowBounds) metaStatementHandler.getValue("delegate.rowBounds");
    if (rowBounds == null || rowBounds == RowBounds.DEFAULT) {
        return invocation.proceed();
    }
    String originalSql = (String) metaStatementHandler.getValue("delegate.boundSql.sql");
    metaStatementHandler.setValue("delegate.boundSql.sql",
            getLimitString(originalSql, rowBounds.getOffset(), rowBounds.getLimit()));
    metaStatementHandler.setValue("delegate.rowBounds.offset", RowBounds.NO_ROW_OFFSET);
    metaStatementHandler.setValue("delegate.rowBounds.limit", RowBounds.NO_ROW_LIMIT);
    if (log.isDebugEnabled()) {
        log.debug("pagination SQL : " + boundSql.getSql());
    }
    return invocation.proceed();
}
 

private Statement prepareStatement(StatementHandler handler, Log statementLog) throws SQLException {
  Statement stmt;
  //得到绑定的SQL语句
  BoundSql boundSql = handler.getBoundSql();
  String sql = boundSql.getSql();
  //如果缓存中已经有了，直接得到Statement
  if (hasStatementFor(sql)) {
    stmt = getStatement(sql);
  } else {
    //如果缓存没有找到，则和SimpleExecutor处理完全一样，然后加入缓存
    Connection connection = getConnection(statementLog);
    stmt = handler.prepare(connection);
    putStatement(sql, stmt);
  }
  handler.parameterize(stmt);
  return stmt;
}
 

private void bindingLog(Invocation invocation) throws SQLException {

        Object[] args = invocation.getArgs();
        MappedStatement ms = (MappedStatement) args[0];
        Object parameterObject = args[1];
        StatementType statementType = ms.getStatementType();
        if (StatementType.PREPARED == statementType || StatementType.CALLABLE == statementType) {
            Log statementLog = ms.getStatementLog();
            if (isDebugEnable(statementLog)) {
                BoundSql boundSql = ms.getBoundSql(parameterObject);

                String sql = boundSql.getSql();
                List<String> parameterList = getParameters(ms, parameterObject, boundSql);
                debug(statementLog, "==> BindingLog: " + bindLogFormatter.format(sql, parameterList));
            }
        }
    }
 

/**
 * 通过命名空间方式获取sql
 * @param session
 * @param namespace
 * @param params
 * @return
 */
public static String getNamespaceSql(SqlSession session, String namespace, Object params) {
    Configuration configuration = session.getConfiguration();
    MappedStatement mappedStatement = configuration.getMappedStatement(namespace);
    TypeHandlerRegistry typeHandlerRegistry = mappedStatement.getConfiguration().getTypeHandlerRegistry();
    BoundSql boundSql = mappedStatement.getBoundSql(params);
    List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
    String sql = boundSql.getSql();
    if (parameterMappings != null) {
        for (int i = 0; i < parameterMappings.size(); i++) {
            ParameterMapping parameterMapping = parameterMappings.get(i);
            if (parameterMapping.getMode() != ParameterMode.OUT) {
                Object value;
                String propertyName = parameterMapping.getProperty();
                if (boundSql.hasAdditionalParameter(propertyName)) {
                    value = boundSql.getAdditionalParameter(propertyName);
                } else if (params == null) {
                    value = null;
                } else if (typeHandlerRegistry.hasTypeHandler(params.getClass())) {
                    value = params;
                } else {
                    MetaObject metaObject = configuration.newMetaObject(params);
                    value = metaObject.getValue(propertyName);
                }
                JdbcType jdbcType = parameterMapping.getJdbcType();
                if (value == null && jdbcType == null) jdbcType = configuration.getJdbcTypeForNull();
                sql = replaceParameter(sql, value, jdbcType, parameterMapping.getJavaType());
            }
        }
    }
    return sql;
}
 

@Override
public Object intercept(Invocation invocation) throws Throwable {
    StatementHandler statementHandler = (StatementHandler) PluginUtils.realTarget(invocation.getTarget());
    MetaObject metaObject = SystemMetaObject.forObject(statementHandler);
    this.sqlParser(metaObject);
    // 先判断是不是SELECT操作
    MappedStatement mappedStatement = (MappedStatement) metaObject.getValue("delegate.mappedStatement");
    if (!SqlCommandType.SELECT.equals(mappedStatement.getSqlCommandType())) {
        return invocation.proceed();
    }

    BoundSql boundSql = (BoundSql) metaObject.getValue("delegate.boundSql");
    String originalSql = boundSql.getSql();
    Object parameterObject = boundSql.getParameterObject();

    //查找参数中包含DataScope类型的参数
    DataScope dataScope = findDataScopeObject(parameterObject);

    if (dataScope == null) {
        return invocation.proceed();
    } else {
        String scopeName = dataScope.getScopeName();
        List<Integer> deptIds = dataScope.getDeptIds();
        if(StrUtil.isNotBlank(scopeName) && CollectionUtil.isNotEmpty(deptIds)){
            String join = CollectionUtil.join(deptIds, ",");
            originalSql = "select * from (" + originalSql + ") temp_data_scope where temp_data_scope." + scopeName + " in (" + join + ")";
            metaObject.setValue("delegate.boundSql.sql", originalSql);
        }
        return invocation.proceed();
    }
}
 

@Override
public String getPageSql(MappedStatement ms, BoundSql boundSql, Object parameterObject, RowBounds rowBounds, CacheKey pageKey) {
    String sql = boundSql.getSql();
    Page page = getLocalPage();
    //支持 order by
    String orderBy = page.getOrderBy();
    if (StringUtil.isNotEmpty(orderBy)) {
        pageKey.update(orderBy);
        sql = OrderByParser.converToOrderBySql(sql, orderBy);
    }
    if (page.isOrderByOnly()) {
        return sql;
    }
    return getPageSql(sql, page, pageKey);
}
 

@Override
public String getCountSql(MappedStatement ms, BoundSql boundSql, Object parameterObject, RowBounds rowBounds, CacheKey countKey) {
    String sql = boundSql.getSql();
    String cacheSql = CACHE_COUNTSQL.get(sql);
    if (cacheSql != null) {
        return cacheSql;
    } else {
        cacheSql = sql;
    }
    cacheSql = replaceSql.replace(cacheSql);
    cacheSql = countSqlParser.getSmartCountSql(cacheSql);
    cacheSql = replaceSql.restore(cacheSql);
    CACHE_COUNTSQL.put(sql, cacheSql);
    return cacheSql;
}
 

@Override
public Object intercept(Invocation invocation) throws Throwable {

    StatementHandler statementHandler = (StatementHandler) invocation.getTarget();
    BoundSql boundSql = statementHandler.getBoundSql();

    String sql = boundSql.getSql();
    if (StringUtils.isBlank(sql)) {
        return invocation.proceed();
    }

    //select sql do 
    if (sql.matches(SQL_SELECT_REGEX) && !Pattern.matches(SQL_COUNT_REGEX, sql)) {
        Object obj = FieldUtils.readField(statementHandler, "delegate", true);
        // 反射获取 RowBounds 对象。
        RowBounds rowBounds = (RowBounds) FieldUtils.readField(obj, "rowBounds", true);

        // 分页参数存在且不为默认值时进行分页SQL构造
        if (rowBounds != null && rowBounds != RowBounds.DEFAULT) {
            FieldUtils.writeField(boundSql, "sql", newSql(sql, rowBounds), true);

            // 一定要还原否则将无法得到下一组数据(第一次的数据被缓存了)
            FieldUtils.writeField(rowBounds, "offset", RowBounds.NO_ROW_OFFSET, true);
            FieldUtils.writeField(rowBounds, "limit", RowBounds.NO_ROW_LIMIT, true);
        }
    }

    return invocation.proceed();
}
 

@Override
public void replace(Connection connection, MetaObject metaObject, MappedStatement mappedStatement, BoundSql boundSql) {
    if (mappedStatement.getSqlCommandType() == SqlCommandType.SELECT ||
            mappedStatement.getSqlCommandType() == SqlCommandType.DELETE) {
        String sql = boundSql.getSql();

        Matcher matcher = SqlUtils.PATTERN_PLACEHOLDER.matcher(sql);
        Iterator<ParameterMapping> iterator = boundSql.getParameterMappings().iterator();
        MetaObject parameterMetaObject = MyBatisUtils.getMetaObject(boundSql.getParameterObject());
        boolean isUpperCase = Character.isUpperCase(sql.charAt(0));

        int offset = 0;
        StringBuilder sqlBuilder = new StringBuilder();
        while (matcher.find() & iterator.hasNext()) {
            try {
                if (parameterMetaObject.getValue(iterator.next().getProperty()) != null) continue;
            } catch (Exception ignored) {
                continue;
            }
            iterator.remove();

            String substring = sql.substring(offset, matcher.end());
            int before = substring.length();
            substring = substring.replaceFirst(" ?!= *\\?$| ?<> *\\?$",
                    isUpperCase ? " IS NOT NULL" : " is not null");
            if (substring.length() == before) {
                substring = substring.replaceFirst(" ?= *\\?$", isUpperCase ? " IS NULL" : " is null");
            }
            sqlBuilder.append(substring);
            offset = matcher.end();
        }
        sqlBuilder.append(sql, offset, sql.length());
        metaObject.setValue("delegate.boundSql.sql", sqlBuilder.toString());
    }
}
 

@Override
public void replace(Connection connection, MetaObject metaObject, MappedStatement mappedStatement, BoundSql boundSql) {
    String sql = boundSql.getSql();
    if (sql.contains("#t")) {
        Class<?> entityType = MapperUtils.getEntityTypeFromMapper
                (mappedStatement.getId().substring(0, mappedStatement.getId().lastIndexOf('.')));
        metaObject.setValue("delegate.boundSql.sql", sql.replace("#t",
                EntityUtils.getTableName(entityType, configuration.getNameAdaptor())));
    }
}
 

@Override
public Object intercept(Invocation invocation) throws Throwable {
    Object[] args = invocation.getArgs();
    MappedStatement mappedStatement = (MappedStatement) args[0];
    Object parameter = args[1];
    //从当前线程获取需要进行数据权限控制的业务
    DataPermission dataPermission = DPHelper.getLocalDataPermissions();
    //判断有没有进行数据权限控制，是不是最高权限的管理员（这里指的是数据权限的白名单用户）
    if (dataPermission != null && dataPermission.getAdmin() == false) {
        BoundSql boundSql = mappedStatement.getBoundSql(parameter);
        String sql = boundSql.getSql();
        //获得方法类型
        Select select = (Select) CCJSqlParserUtil.parse(sql);
        select.getSelectBody().accept(new SelectVisitorImpl());
        //判断当前sql是否被修改
        if (DPHelper.getChangeTable()) {
            //访问各个visitor
            //TODO:解析动态sql会失败
            BoundSql newBoundSql = new BoundSql(mappedStatement.getConfiguration(), select.toString(), boundSql
                    .getParameterMappings(), parameter);
            String newMsId = mappedStatement.getId() + DATA_PERMISSION;
            MappedStatement newMs = copyFromMappedStatement(mappedStatement, new BoundSqlSqlSource(newBoundSql), newMsId);
            args[0] = newMs;
            DPHelper.clearChangeTable();
        }
    }
    return invocation.proceed();
}
 

@Override
public String getCountSql(MappedStatement ms, BoundSql boundSql, Object parameterObject, RowBounds rowBounds, CacheKey countKey) {
    String sql = boundSql.getSql();
    sql = replaceSql.replace(sql);
    sql = countSqlParser.getSmartCountSql(sql);
    sql = replaceSql.restore(sql);
    return sql;
}
 

@Override
public Object intercept(Invocation invocation) throws Throwable {
    StatementHandler statementHandler = (StatementHandler) PluginUtils.realTarget(invocation.getTarget());
    MetaObject metaStatementHandler = SystemMetaObject.forObject(statementHandler);
    MappedStatement mappedStatement = (MappedStatement) metaStatementHandler.getValue("delegate.mappedStatement");

    if (!SqlCommandType.SELECT.equals(mappedStatement.getSqlCommandType())) {
        return invocation.proceed();
    }

    BoundSql boundSql = (BoundSql) metaStatementHandler.getValue("delegate.boundSql");
    String originalSql = boundSql.getSql();
    Object parameterObject = boundSql.getParameterObject();

    //查找参数中包含DataScope类型的参数
    DataScope dataScope = findDataScopeObject(parameterObject);

    if (dataScope == null) {
        return invocation.proceed();
    } else {
        String scopeName = dataScope.getScopeName();
        List<Integer> deptIds = dataScope.getDeptIds();
        String join = CollectionKit.join(deptIds, ",");
        originalSql = "select * from (" + originalSql + ") temp_data_scope where temp_data_scope." + scopeName + " in (" + join + ")";
        metaStatementHandler.setValue("delegate.boundSql.sql", originalSql);
        return invocation.proceed();
    }
}
 

@Override
public Object intercept(Invocation invocation) throws Throwable {
	StatementHandler statementHandler = (StatementHandler) PluginUtils.realTarget(invocation.getTarget());
	MetaObject metaObject = SystemMetaObject.forObject(statementHandler);
	this.sqlParser(metaObject);
	// 先判断是不是SELECT操作
	MappedStatement mappedStatement = (MappedStatement) metaObject.getValue("delegate.mappedStatement");
	if (!SqlCommandType.SELECT.equals(mappedStatement.getSqlCommandType())) {
		return invocation.proceed();
	}

	BoundSql boundSql = (BoundSql) metaObject.getValue("delegate.boundSql");
	String originalSql = boundSql.getSql();
	Object parameterObject = boundSql.getParameterObject();

	//查找参数中包含DataScope类型的参数
	DataScope dataScope = findDataScopeObject(parameterObject);

	if (dataScope == null) {
		return invocation.proceed();
	} else {
		String scopeName = dataScope.getScopeName();
		List<Integer> deptIds = dataScope.getDeptIds();
		if (StrUtil.isNotBlank(scopeName) && CollectionUtil.isNotEmpty(deptIds)) {
			String join = CollectionUtil.join(deptIds, ",");
			originalSql = "select * from (" + originalSql + ") temp_data_scope where temp_data_scope." + scopeName + " in (" + join + ")";
			metaObject.setValue("delegate.boundSql.sql", originalSql);
		}
		return invocation.proceed();
	}
}
 

@Override
public void inbound(HandlerContext ctx) throws Throwable {
    ExecutorInvocation executorInvocation = (ExecutorInvocation) ctx.getPipeline().getTarget();
    MappedStatement mappedStatement = executorInvocation.getMappedStatement();

    if (!MybatisUtils.isQueryStatement(mappedStatement) || !MybatisUtils.isPreparedStatement(mappedStatement) || !isEnableLikeEscape()) {
        Pipelines.skipHandler(ctx, true);
        return;
    }

    // notice: the sqlcontext, sqlrequest is not null
    SqlRequestContext sqlContext = SqlRequestContextHolder.getInstance().get();
    LikeEscaper likeEscaper = getLikeEscaper(mappedStatement, sqlContext.getRequest(), executorInvocation);
    if (Objects.isNull(likeEscaper)) {
        logger.warn("Can't find a suitable LikeEscaper for the sql request: {}, statement id: {}", sqlContext.getRequest(), mappedStatement.getId());
        Pipelines.skipHandler(ctx, true);
        return;
    }
    sqlContext.getRequest().setLikeEscaper(likeEscaper);
    BoundSql boundSql = executorInvocation.getBoundSql();
    String sql = boundSql.getSql();
    Pair<List<Integer>, List<Integer>> pair = LikeEscapers.findEscapedSlots(sql);
    if (Emptys.isEmpty(pair.getKey()) && Emptys.isEmpty(pair.getValue())) {
        Pipelines.skipHandler(ctx, true);
        return;
    }

    String newSql = LikeEscapers.insertLikeEscapeDeclares(sql, pair.getValue(), likeEscaper);
    sqlContext.getRequest().setLikeParameterIndexes(pair.getKey());
    if (logger.isDebugEnabled()) {
        SqlDmlFormatter sqlDmlFormatter = new SqlDmlFormatter();
        logger.debug("After like escape, the sql {} become: {}", sqlDmlFormatter.format(sql), sqlDmlFormatter.format(newSql));
    }
    // rebuild a BoundSql
    boundSql = MybatisUtils.rebuildBoundSql(newSql, mappedStatement.getConfiguration(), boundSql);
    executorInvocation.setBoundSql(boundSql);
    sqlContext.set(MybatisSqlRequestContextKeys.LIKE_ESCAPE_PARAMETERS_INDEXES, pair.getKey());
    sqlContext.set(MybatisSqlRequestContextKeys.LIKE_ESCAPER, likeEscaper);
    Pipelines.inbound(ctx);
}
 

@Override
public Object intercept(Invocation invocation) throws Throwable {
    StatementHandler handler = (StatementHandler) invocation.getTarget();

    // 获取MappedStatement,Configuration对象
    MetaObject metaObject =
            MetaObject.forObject(handler, new DefaultObjectFactory(), new DefaultObjectWrapperFactory(), new DefaultReflectorFactory());
    MappedStatement mappedStatement = (MappedStatement) metaObject.getValue("delegate.mappedStatement");
    String statement = mappedStatement.getId();
    if (!isPageSql(statement,metaObject.getValue("boundSql.parameterObject"))) {
        return invocation.proceed();
    }

    Configuration configuration = (Configuration) metaObject.getValue("delegate.configuration");
    Executor executor = (Executor) metaObject.getValue("delegate.executor");

    // 获取分页参数
    BoundSql boundSql = handler.getBoundSql();
    QPageQuery pageQuery = (QPageQuery) boundSql.getParameterObject();
    String countStatement = buildCountStatement(statement);
    List<Integer> counts = executor.query(configuration.
            getMappedStatement(countStatement), pageQuery, RowBounds.DEFAULT, null);

    int count = 0;
    if (counts != null && !counts.isEmpty()) {
        count = counts.get(0) == null ? 0 : counts.get(0);
    }

    if (pageQuery.getPagination() == null) {
        pageQuery.setPagination(new Pagination());
    }
    pageQuery.getPagination().setTotalRecord(count);

    String sql = boundSql.getSql();
    if (logger.isDebugEnabled()) {
        logger.debug("raw SQL : " + sql);
    }

    if (sql == null || sql.isEmpty() || sql.contains(" limit ")) {
        return invocation.proceed();
    }

    String originalSql = (String) metaObject.getValue("delegate.boundSql.sql");
    metaObject.setValue("delegate.boundSql.sql",
            getLimitString(originalSql, pageQuery.getPagination().getStart(),
                    pageQuery.getPagination().getSize()));
    metaObject.setValue("delegate.rowBounds.offset", RowBounds.NO_ROW_OFFSET);
    metaObject.setValue("delegate.rowBounds.limit", RowBounds.NO_ROW_LIMIT);

    if (logger.isDebugEnabled()) {
        logger.debug("pagination SQL : " + sql);
    }
    return invocation.proceed();
}
 

public Object intercept(Invocation invocation) throws Throwable {
	Object result = null;

	if (invocation.getTarget() instanceof RoutingStatementHandler) {
		RoutingStatementHandler statementHandler = (RoutingStatementHandler) invocation.getTarget();
		StatementHandler delegate = (StatementHandler) ReflectionUtil.getFieldValue(statementHandler, "delegate");
		BoundSql boundSql = delegate.getBoundSql();

		// 拦截到的prepare方法参数是一个Connection对象
		Connection connection = (Connection) invocation.getArgs()[0];
		String sql = boundSql.getSql();

		// 1、 如果前端有指定路由则，优先采用指定的路由
		if (RouterContext.containsKey(RouterConsts.ROUTER_KEY) && !hasAnnotation(sql)) {
			RouterInfo routerInfo = RouterContext.get(RouterConsts.ROUTER_KEY);
			sql = new StringBuilder(routerInfo.getSqlrouter()).append(sql).toString();

			// 利用反射设置当前BoundSql对应的sql属性为我们建立好的分页Sql语句
			ReflectionUtil.setFieldValue(boundSql, "sql", sql);
		}

		// 2、如果没有路由信息，对只读事物添加读取从库的路由
		if (!hasAnnotation(sql) && connection.isReadOnly()) {

			// 获取当前要执行的Sql语句，也就是我们直接在Mapper映射语句中写的Sql语句
			sql = msHint.genRouteInfo(MasterSlaveHint.SLAVE, sql);

			// 利用反射设置当前BoundSql对应的sql属性为我们建立好的分页Sql语句
			ReflectionUtil.setFieldValue(boundSql, "sql", sql);
		}

		result = invocation.proceed();

		// if (isDML(sql) &&
		// !RouterContext.containsKey(RouterConsts.ROUTER_KEY)) {
		// 如果更改执行的是DML语句，则设置后续的CRUD路由到master
		// String appName = PropertiesUtil.get("app.name");
		// //TODO这里可能需要针对应用来进行主从路由，存在一条链路路由到多个应用的不同DB中
		// RouterContext.put(RouterConsts.ROUTER_KEY,
		// msHint.getRouteMasterHint());
		// }

	} else {
		result = invocation.proceed();
	}

	return result;
}
 

@Override
@SuppressWarnings("unchecked")
public Object intercept(Invocation invocation) throws Throwable {
    Executor executor = MyBatisUtils.getRealTarget(invocation.getTarget());
    Object[] args = invocation.getArgs();
    MappedStatement mappedStatement = (MappedStatement) args[MAPPED_STATEMENT_INDEX];

    // 查询操作或者存储过程，无需分页
    if (SqlCommandType.SELECT != mappedStatement.getSqlCommandType()
            || StatementType.CALLABLE == mappedStatement.getStatementType()) {
        return invocation.proceed();
    }

    Object parameterObject = invocation.getArgs()[PARAMETER_INDEX];

    // 不包含PageableRequest或者Pageable参数时，无需分页
    PageableRequest<?> pageableRequest = MyBatisUtils.findPageableRequest(parameterObject).orElse(null);
    if (null == pageableRequest || pageableRequest.getPageable() == null ||
            pageableRequest.getPageable().getPageSize() < 0) {
        return invocation.proceed();
    }

    Connection connection = executor.getTransaction().getConnection();

    DbType dbType = this.dbType == null ? JdbcUtils.getDbType(connection) : this.dbType;
    DbDialect dialect = Optional.ofNullable(this.dbDialect).orElseGet(() -> JdbcUtils.getDialect(dbType));

    // 针对定义了rowBounds，做为mapper接口方法的参数
    BoundSql boundSql = mappedStatement.getBoundSql(parameterObject);
    String originalSql = boundSql.getSql();

    // 查询总记录数
    long total = 0;
    if (pageableRequest.isQueryTotalCount()) {
        String countSql = dialect.buildCountSql(boundSql.getSql());

        total = this.queryTotal(countSql, mappedStatement, boundSql, connection);

        if (total <= 0) {
            return null;
        }
    }

    Pageable pageable = pageableRequest.getPageable();
    String buildSql = concatOrderBy(originalSql, pageable);
    String paginationSql = dialect.buildPaginationSql(buildSql, pageable.getOffset(), pageable.getPageSize());

    BoundSql newBs = MyBatisUtils.copyFromBoundSql(mappedStatement, boundSql, paginationSql, parameterObject);
    MappedStatement newMs = MyBatisUtils.copyFromMappedStatement(mappedStatement, new BoundSqlSqlSource(newBs));
    args[MAPPED_STATEMENT_INDEX] = newMs;
    args[ROWBOUNDS_INDEX] = RowBounds.DEFAULT;

    Object result = invocation.proceed();
    pageableRequest.setTotal(total);
    pageableRequest.setRecords((List) result);
    return result;
}