@author jamie12221 date 2019-05-22 02:18

@author Oliver Gierke

@author Junwen Chen

chen junwen <p> a iterator,like jdbc result set

Abstract implementation of the {@link RexCallImplementor} interface. <p>It is not always safe to execute the {@link RexCall} directly due to the spec

实际包含运行状态的session实现 本对象封装 1.selector 2.读写通道 4.session创建时间 sessionId就是connectionId @param <T> 子类 @author jamie12221 date 2019-05-10 13:21

chen junwen <p> a iterator,transform text to object

Base class for all the type coercion rules. If you want to have a custom type coercion rules, inheriting this class is not necessary, but would have s

数据包 上下文 #{@link io.mycat.MycatDataContext} 日志 #{@link org.slf4j.MDC} 事务 #{@link io.mycat.TransactionSession} 异常埋点 执行耗时 监控不同数据包的发送次数 @author wangzihao

Adds the node to the page replacement policy.

@author jamie12221

reference from com.alibaba.polardbx.optimizer.core.planner.rule.CBOPushAggRule#tryPushAgg com.alibaba.polardbx.optimizer.core.planner.rule.CBOPushAggR

Implementation of Context that precedes field references with their "table alias" based on the current sub-query's FROM clause.

A SqlShuttle to replace references to a column of a table alias with the expression from the select item that is the source of that column. ANTI- and

@author Junwen Chen

@author jamie12221

Lightweight container that supports resource injection @author wangzihao 2016/11/11/011

@author jamie12221 date 2019-05-22 11:50

HandshakeResponse41 https://dev.mysql.com/doc/internals/en/connection-phase-packets.html <pre> 4 capability flags, CLIENT_PROTOCOL_

AuthSwitchRequest https://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchRequest <pre> 1 [

参考 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor

Convertlet that handles {@code AVG} and {@code VARIANCE} windowed aggregate functions.

@author jamie12221 date 2019-05-10 22:24 向mysql服务器创建连接

@author jamie12221 date 2019-05-20 11:52 mysql响应报文解析器

@author jamie12221 date 2019-05-20 20:13

后端session管理器 @param <T> session实现 @param <KEY> 根据此key查询session

@author Weiqing Xu @author Junwen Chen