package com.alibaba.datax.plugin.reader.dmreader;
/**
* Des: 常量
* Author: SiQiangMing 2022/9/8 18:09
*/
public class Constant {
public static final int DEFAULT_FETCH_SIZE = 1000;
}
package com.alibaba.datax.plugin.reader.dmreader;
import com.alibaba.datax.common.exception.DataXException;
import com.alibaba.datax.common.plugin.RecordSender;
import com.alibaba.datax.common.spi.Reader;
import com.alibaba.datax.common.util.Configuration;
import com.alibaba.datax.plugin.rdbms.reader.CommonRdbmsReader;
import com.alibaba.datax.plugin.rdbms.util.DBUtilErrorCode;
import com.alibaba.datax.plugin.rdbms.util.DataBaseType;
import java.util.List;
/**
* Des: 达梦读取插件
* Author: SiQiangMing 2022/9/8 16:13
*/
public class DmReader extends Reader {
private static final DataBaseType DATABASE_TYPE = DataBaseType.Dm;
/**
* Des: 静态内部类,执行job相关操作
* Author: SiQiangMing 2022/9/8 18:09
*/
public static class Job extends Reader.Job {
private Configuration originalConfig;
private CommonRdbmsReader.Job commonRdbmsReaderMaster;
@Override
public void init() {
this.originalConfig = super.getPluginJobConf();
int fetchSize = this.originalConfig.getInt(com.alibaba.datax.plugin.rdbms.reader.Constant.FETCH_SIZE,
Constant.DEFAULT_FETCH_SIZE);
if (fetchSize < 1) {
throw DataXException.asDataXException(DBUtilErrorCode.REQUIRED_VALUE,
String.format("您配置的fetchSize有误,根据DataX的设计,fetchSize : [%d] 设置值不能小于 1.", fetchSize));
}
this.originalConfig.set(com.alibaba.datax.plugin.rdbms.reader.Constant.FETCH_SIZE, fetchSize);
this.commonRdbmsReaderMaster = new CommonRdbmsReader.Job(DATABASE_TYPE);
this.commonRdbmsReaderMaster.init(this.originalConfig);
}
@Override
public void post() {
this.commonRdbmsReaderMaster.post(this.originalConfig);
}
@Override
public void destroy() {
this.commonRdbmsReaderMaster.destroy(this.originalConfig);
}
@Override
public List split(int adviceNumber) {
return this.commonRdbmsReaderMaster.split(this.originalConfig, adviceNumber);
}
}
/**
* Des: 静态内部类,执行job相关操作
* Author: SiQiangMing 2022/9/8 18:11
*/
public static class Task extends Reader.Task {
private Configuration readerSliceConfig;
private CommonRdbmsReader.Task commonRdbmsReaderSlave;
@Override
public void init() {
this.readerSliceConfig = super.getPluginJobConf();
this.commonRdbmsReaderSlave = new CommonRdbmsReader.Task(DATABASE_TYPE, super.getTaskGroupId(), super.getTaskId());
this.commonRdbmsReaderSlave.init(this.readerSliceConfig);
}
@Override
public void startRead(RecordSender recordSender) {
int fetchSize = this.readerSliceConfig.getInt(com.alibaba.datax.plugin.rdbms.reader.Constant.FETCH_SIZE);
this.commonRdbmsReaderSlave.startRead(this.readerSliceConfig, recordSender,
super.getTaskPluginCollector(), fetchSize);
}
@Override
public void post() {
this.commonRdbmsReaderSlave.post(this.readerSliceConfig);
}
@Override
public void destroy() {
this.commonRdbmsReaderSlave.destroy(this.readerSliceConfig);
}
}
}
8、plugin.json,这里面的name就是插件名,别和其他的重复了就行,后面要用
{
"name": "dmreader",
"class": "com.alibaba.datax.plugin.reader.dmreader.DmReader",
"description": "useScene: prod. mechanism: Jdbc connection using the database, execute select sql, retrieve data from the ResultSet. warn: The more you know about the database, the less problems you encounter.",
"developer": "SiQiangMing"
}
例如,你想myuser使用mypassword从任何主机连接到mysql服务器的话。
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%'IDENTIFIED BY 'mypassword' WI
TH GRANT OPTION;
如果你想允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器,并使用mypassword作
在 Service Pack 4 (SP 4), 是运行 Microsoft Windows Server 2003、 Microsoft Windows Storage Server 2003 或 Microsoft Windows 2000 服务器上您尝试安装 Microsoft SQL Server 2000 通过卷许可协议 (VLA) 媒体。 这样做, 收到以下错误信息CD KEY的 SQ
OS 7 has a new method that allows you to draw a view hierarchy into the current graphics context. This can be used to get an UIImage very fast.
I implemented a category method on UIView to get the vi
方法一:
在my.ini的[mysqld]字段加入:
skip-grant-tables
重启mysql服务,这时的mysql不需要密码即可登录数据库
然后进入mysql
mysql>use mysql;
mysql>更新 user set password=password('新密码') WHERE User='root';
mysq
背景
2014年11月12日,ASP.NET之父、微软云计算与企业级产品工程部执行副总裁Scott Guthrie,在Connect全球开发者在线会议上宣布,微软将开源全部.NET核心运行时,并将.NET 扩展为可在 Linux 和 Mac OS 平台上运行。.NET核心运行时将基于MIT开源许可协议发布,其中将包括执行.NET代码所需的一切项目——CLR、JIT编译器、垃圾收集器(GC)和核心