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polardb
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‎docs/polardbSide.md‎

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## 1.格式：
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```
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CREATE TABLE tableName(
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colName cloType,
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...
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PRIMARY KEY(keyInfo),
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PERIOD FOR SYSTEM_TIME
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)WITH(
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type='polardb',
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url='jdbcUrl',
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userName='dbUserName',
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password='dbPwd',
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tableName='tableName',
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cache ='LRU',
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cacheSize ='10000',
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cacheTTLMs ='60000',
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parallelism ='1',
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partitionedJoin='false'
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);
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```
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# 2.支持版本
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mysql-8.0.16
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## 3.表结构定义
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|参数名称|含义|
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|----|---|
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| tableName | polardb表名称|
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| colName | 列名称|
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| colType | 列类型 [colType支持的类型](colType.md)|
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| PERIOD FOR SYSTEM_TIME | 关键字表明该定义的表为维表信息|
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| PRIMARY KEY(keyInfo) | 维表主键定义;多个列之间用逗号隔开|
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## 4.参数
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|参数名称|含义|是否必填|默认值|
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|----|---|---|----|
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| type | 表明维表的类型 polardb |是||
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| url | 连接polardb数据库 jdbcUrl |是||
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| userName | ploardb连接用户名 |是||
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| password | ploardb连接密码|是||
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| tableName | ploardb表名称|是||
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| cache | 维表缓存策略(NONE/LRU)|否|NONE|
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| partitionedJoin | 是否在維表join之前先根据 設定的key 做一次keyby操作(可以減少维表的数据缓存量)|否|false|
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----------
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> 缓存策略
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* NONE: 不做内存缓存
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* LRU:
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* cacheSize: 缓存的条目数量
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* cacheTTLMs:缓存的过期时间(ms)
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* cacheMode: (unordered|ordered)异步加载是有序还是无序,默认有序。
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* asyncCapacity:异步请求容量，默认1000
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* asyncTimeout：异步请求超时时间，默认10000毫秒
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## 5.样例
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```
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create table sideTable(
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channel varchar,
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xccount int,
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PRIMARY KEY(channel),
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PERIOD FOR SYSTEM_TIME
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)WITH(
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type='polardb',
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url='jdbc:mysql://xxx.xxx.xxx:3306/test?charset=utf8',
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userName='dtstack',
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password='abc123',
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tableName='sidetest',
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cache ='LRU',
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cacheSize ='10000',
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cacheTTLMs ='60000',
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cacheMode='unordered',
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asyncCapacity='1000',
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asyncTimeout='10000'
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parallelism ='1',
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partitionedJoin='false'
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);
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```

‎docs/polardbSink.md‎

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## 1.格式：
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```
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CREATE TABLE tableName(
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colName colType,
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...
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colNameX colType
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)WITH(
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type ='polardb',
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url ='jdbcUrl',
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userName ='userName',
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password ='pwd',
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tableName ='tableName',
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parallelism ='parllNum'
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);
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```
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## 2.支持版本
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mysql-8.0.16
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## 3.表结构定义
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|参数名称|含义|
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|----|---|
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| tableName| polardb表名称|
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| colName | 列名称|
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| colType | 列类型 [colType支持的类型](colType.md)|
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## 4.参数：
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|参数名称|含义|是否必填|默认值|
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|----|----|----|----|
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|type |表名 输出表类型 polardb|是||
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|url | 连接polardb数据库 jdbcUrl |是||
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|userName | polardb连接用户名 |是||
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| password | polardb连接密码|是||
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| tableName | polardb表名称|是||
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| parallelism | 并行度设置|否|1|
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## 5.样例：
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```
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CREATE TABLE MyResult(
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channel VARCHAR,
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pv VARCHAR
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)WITH(
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type ='polardb',
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url ='jdbc:mysql://xxx.xxx.xxx:3306/test?charset=utf8',
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userName ='dtstack',
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password ='abc123',
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tableName ='pv2',
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parallelism ='1'
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);
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```

‎polardb/polardb-side/polardb-all-side/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>sql.side.polardb</artifactId>
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<groupId>com.dtstack.flink</groupId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>sql.side.all.polardb</artifactId>
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<name>polardb-all-side</name>
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<packaging>jar</packaging>
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<properties>
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<sql.side.polardb.core.version>1.0-SNAPSHOT</sql.side.polardb.core.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.dtstack.flink</groupId>
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<artifactId>sql.side.polardb.core</artifactId>
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<version>${sql.side.polardb.core.version}</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>1.4</version>
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<executions>
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<artifactSet>
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<excludes>
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</excludes>
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</artifactSet>
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<filters>
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<filter>
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<artifact>*:*</artifact>
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<excludes>
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<exclude>META-INF/*.SF</exclude>
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<exclude>META-INF/*.DSA</exclude>
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<exclude>META-INF/*.RSA</exclude>
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</excludes>
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</filter>
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</filters>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<artifactId>maven-antrun-plugin</artifactId>
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<version>1.2</version>
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<executions>
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<execution>
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<id>copy-resources</id>
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<!-- here the phase you need -->
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<phase>package</phase>
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<goals>
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<goal>run</goal>
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</goals>
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<configuration>
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<tasks>
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<copy todir="${basedir}/../../../plugins/polardballside">
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<fileset dir="target/">
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<include name="${project.artifactId}-${project.version}.jar"/>
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</fileset>
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</copy>
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<move file="${basedir}/../../../plugins/polardballside/${project.artifactId}-${project.version}.jar"
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tofile="${basedir}/../../../plugins/polardballside/${project.name}-${git.branch}.jar"/>
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</tasks>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

‎polardb/polardb-side/polardb-all-side/src/main/java/com/dtstack/flink/sql/side/polardb/PolardbAllReqRow.java‎

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package com.dtstack.flink.sql.side.polardb;
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import com.dtstack.flink.sql.side.FieldInfo;
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import com.dtstack.flink.sql.side.JoinInfo;
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import com.dtstack.flink.sql.side.SideTableInfo;
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import com.dtstack.flink.sql.side.rdb.all.RdbAllReqRow;
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import com.dtstack.flink.sql.util.DtStringUtil;
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import com.google.common.collect.Maps;
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import org.apache.flink.api.java.typeutils.RowTypeInfo;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.util.List;
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import java.util.Map;
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public class PolardbAllReqRow extends RdbAllReqRow {
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private static final long serialVersionUID = 2098635140857937717L;
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private static final Logger LOG = LoggerFactory.getLogger(PolardbAllReqRow.class);
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private static final String POLARDB_DRIVER = "com.mysql.cj.jdbc.Driver";
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public PolardbAllReqRow(RowTypeInfo rowTypeInfo, JoinInfo joinInfo, List<FieldInfo> outFieldInfoList, SideTableInfo sideTableInfo) {
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super(new PolardbAllSideInfo(rowTypeInfo, joinInfo, outFieldInfoList, sideTableInfo));
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}
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@Override
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public Connection getConn(String dbURL, String userName, String password) {
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try {
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Class.forName(POLARDB_DRIVER);
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//add param useCursorFetch=true
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Map<String, String> addParams = Maps.newHashMap();
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addParams.put("useCursorFetch", "true");
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String targetDbUrl = DtStringUtil.addJdbcParam(dbURL, addParams, true);
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return DriverManager.getConnection(targetDbUrl, userName, password);
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} catch (Exception e) {
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LOG.error("", e);
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throw new RuntimeException("", e);
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}
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}
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@Override
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public int getFetchSize() {
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return Integer.MIN_VALUE;
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}
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}

‎polardb/polardb-side/polardb-all-side/src/main/java/com/dtstack/flink/sql/side/polardb/PolardbAllSideInfo.java‎

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package com.dtstack.flink.sql.side.polardb;
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import com.dtstack.flink.sql.side.FieldInfo;
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import com.dtstack.flink.sql.side.JoinInfo;
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import com.dtstack.flink.sql.side.SideTableInfo;
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import com.dtstack.flink.sql.side.rdb.all.RdbAllSideInfo;
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import org.apache.flink.api.java.typeutils.RowTypeInfo;
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import java.util.List;
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public class PolardbAllSideInfo extends RdbAllSideInfo {
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public PolardbAllSideInfo(RowTypeInfo rowTypeInfo, JoinInfo joinInfo, List<FieldInfo> outFieldInfoList, SideTableInfo sideTableInfo) {
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super(rowTypeInfo, joinInfo, outFieldInfoList, sideTableInfo);
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}
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}
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‎polardb/polardb-side/polardb-async-side/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>sql.side.polardb</artifactId>
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<groupId>com.dtstack.flink</groupId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>sql.side.async.polardb</artifactId>
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<name>polardb-async-side</name>
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<packaging>jar</packaging>
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<properties>
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<sql.side.polardb.core.version>1.0-SNAPSHOT</sql.side.polardb.core.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>com.dtstack.flink</groupId>
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<artifactId>sql.side.polardb.core</artifactId>
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<version>${sql.side.polardb.core.version}</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>1.4</version>
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<executions>
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<artifactSet>
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<excludes>
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</excludes>
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</artifactSet>
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<filters>
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<filter>
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<artifact>*:*</artifact>
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<excludes>
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<exclude>META-INF/*.SF</exclude>
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<exclude>META-INF/*.DSA</exclude>
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<exclude>META-INF/*.RSA</exclude>
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</excludes>
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</filter>
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</filters>
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</configuration>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<artifactId>maven-antrun-plugin</artifactId>
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<version>1.2</version>
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<executions>
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<execution>
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<id>copy-resources</id>
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<!-- here the phase you need -->
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<phase>package</phase>
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<goals>
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<goal>run</goal>
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</goals>
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<configuration>
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<tasks>
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<copy todir="${basedir}/../../../plugins/polardbasyncside">
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<fileset dir="target/">
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<include name="${project.artifactId}-${project.version}.jar"/>
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</fileset>
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</copy>
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<move file="${basedir}/../../../plugins/polardbasyncside/${project.artifactId}-${project.version}.jar"
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tofile="${basedir}/../../../plugins/polardbasyncside/${project.name}-${git.branch}.jar"/>
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</tasks>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

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