mod java code comments

docs/examples/JDBC/SpringJdbcTemplate/readme.md

@@ -1,11 +1,11 @@
 
 ## TDengine Spring JDBC Template Demo
 
-`Spring JDBC Template` 简化了原生 JDBC Connection 获取释放等操作，使得操作数据库更加方便。
+`Spring JDBC Template` simplifies the operations of acquiring and releasing native JDBC Connections, making database operations more convenient.
 
-### 配置
+### Configuration
 
-修改 `src/main/resources/applicationContext.xml` 文件中 TDengine 的配置信息：
+Modify the TDengine configuration in the `src/main/resources/applicationContext.xml` file:
 
 ```xml
 <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
@@ -20,13 +20,15 @@
 </bean>
 ```
 
-### 打包运行
+### Package and run
+
+Navigate to the `TDengine/tests/examples/JDBC/SpringJdbcTemplate` directory and execute the following commands to generate an executable jar file.
 
-进入 `TDengine/tests/examples/JDBC/SpringJdbcTemplate` 目录下，执行以下命令可以生成可执行 jar 包。
 ```shell
 mvn clean package
 ```
-打包成功之后，进入 `target/` 目录下，执行以下命令就可运行测试：
+After successfully packaging, navigate to the `target/` directory and execute the following commands to run the tests:
+
 ```shell
 java -jar target/SpringJdbcTemplate-1.0-SNAPSHOT-jar-with-dependencies.jar
-```
+```

docs/examples/JDBC/connectionPools/src/main/resources/log4j.properties

@@ -1,21 +1,21 @@
-### 设置###
+### Settings###
 log4j.rootLogger=debug,stdout,DebugLog,ErrorLog
-### 输出信息到控制抬 ###
+### Output information to the console ###
 log4j.appender.stdout=org.apache.log4j.ConsoleAppender
 log4j.appender.stdout.Target=System.out
 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
 log4j.appender.stdout.layout.ConversionPattern=[%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
-### 输出DEBUG 级别以上的日志到=logs/debug.log
+### Output logs of DEBUG level and above to logs/debug.log
 log4j.appender.DebugLog=org.apache.log4j.DailyRollingFileAppender
 log4j.appender.DebugLog.File=logs/debug.log
 log4j.appender.DebugLog.Append=true
 log4j.appender.DebugLog.Threshold=DEBUG 
 log4j.appender.DebugLog.layout=org.apache.log4j.PatternLayout
 log4j.appender.DebugLog.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
-### 输出ERROR 级别以上的日志到=logs/error.log
+### Output logs of ERROR level and above to logs/error.log
 log4j.appender.ErrorLog=org.apache.log4j.DailyRollingFileAppender
 log4j.appender.ErrorLog.File=logs/error.log 
 log4j.appender.ErrorLog.Append=true
 log4j.appender.ErrorLog.Threshold=ERROR 
 log4j.appender.ErrorLog.layout=org.apache.log4j.PatternLayout
-log4j.appender.ErrorLog.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
+log4j.appender.ErrorLog.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

docs/examples/JDBC/connectionPools/src/main/resources/proxool.xml

@@ -1,27 +1,28 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <something-else-entirely>
     <proxool>
+        <!-- Alias for the data source -->
         <alias>ds</alias>
-        <!--数据源的别名-->
+         <!-- URL connection string -->
         <driver-url>jdbc:TAOS-RS://127.0.0.1:6041/log</driver-url>
-        <!--url连接串-->
+        <!-- Driver class -->
         <driver-class>com.taosdata.jdbc.rs.RestfulDriver</driver-class>
-        <!--驱动类-->
+        
         <driver-properties>
             <property name="user" value="root"/>
             <property name="password" value="taosdata"/>
         </driver-properties>
-        <!--最大连接数(默认5个),超过了这个连接数,再有请求时,就排在队列中等候,最大的等待请求数由maximum-new-connections决定 -->
+         <!-- Maximum connection count (default is 5). If this number is exceeded, new requests will be queued. The maximum number of queued requests is determined by maximum-new-connections -->
         <maximum-connection-count>100</maximum-connection-count>
-        <!-- 定义连接池中的最大连接数 -->
+         <!-- Defines the maximum number of connections in the connection pool -->
         <maximum-active-time>100</maximum-active-time>
-        <!--最少保持的空闲连接数(默认2个)-->
+        <!-- Minimum number of idle connections to maintain (default is 2) -->
         <prototype-count>1</prototype-count>
-        <!--最小连接数(默认2个)-->
+        <!-- Minimum connection count (default is 2) -->
         <minimum-connection-count>5</minimum-connection-count>
-        <!--proxool自动侦察各个连接状态的时间间隔(毫秒),侦察到空闲的连接就马上回收,超时的销毁 默认30秒-->
+         <!-- Interval (in milliseconds) for Proxool to automatically check the status of each connection. Idle connections are immediately reclaimed, and timed-out connections are destroyed. Default is 30 seconds -->
         <house-keeping-sleep-time>30000</house-keeping-sleep-time>
-        <!--用于保持连接的测试语句 -->
+        <!-- Test statement used to maintain the connection -->
         <house-keeping-test-sql>select server_version()</house-keeping-test-sql>
     </proxool>
-</something-else-entirely>
+</something-else-entirely>

docs/examples/JDBC/consumer-demo/src/main/java/com/taosdata/Worker.java

@@ -35,17 +35,18 @@ public class Worker implements Runnable {
     public void run() {
         while (!Thread.interrupted()) {
             try {
-                // 控制请求频率
+                // Control request rate
                 if (semaphore.tryAcquire()) {
                     ConsumerRecords<Bean> records = consumer.poll(Duration.ofMillis(sleepTime));
                     pool.submit(() -> {
                         RateLimiter limiter = RateLimiter.create(rate);
                         try {
                             for (ConsumerRecord<Bean> record : records) {
-                                // 流量控制
+                                // Traffic control
                                 limiter.acquire();
-                                // 业务处理数据
+                                // Business data processing
-                                System.out.println("[" + LocalDateTime.now() + "] Thread id:" + Thread.currentThread().getId() + " -> " + record.value());
+                                System.out.println("[" + LocalDateTime.now() + "] Thread id:"
+                                        + Thread.currentThread().getId() + " -> " + record.value());
                             }
                         } finally {
                             semaphore.release();

docs/examples/JDBC/mybatisplus-demo/readme

@@ -1,14 +1,14 @@
-# 使用说明
+# Instructions
 
-## 创建使用db
+## Create and use the database
 ```shell
 $ taos
 
 > create database mp_test
 ```
 
-## 执行测试用例
+## Execute test cases
 
 ```shell
 $ mvn clean test
-```
+```

docs/examples/JDBC/springbootdemo/readme.md

@@ -1,6 +1,6 @@
 ## TDengine SpringBoot + Mybatis Demo
 
-## 需要提前创建 test 数据库
+## Need to create a test database in advance
 
 ```
 $ taos -s 'create database if not exists test'
@@ -8,7 +8,7 @@ $ taos -s 'create database if not exists test'
 $ curl http://localhost:8080/weather/init
 ```
 
-### 配置 application.properties
+### Configure application.properties
 ```properties
 # datasource config
 spring.datasource.driver-class-name=com.taosdata.jdbc.TSDBDriver
@@ -38,9 +38,9 @@ mybatis.mapper-locations=classpath:mapper/*.xml
 logging.level.com.taosdata.jdbc.springbootdemo.dao=debug
 ```
 
-### 主要功能
+### Main functions
 
-* 创建数据库和表
+* Create databases and tables
 ```xml
 <!-- weatherMapper.xml -->
  <update id="createDB" >
@@ -52,14 +52,14 @@ logging.level.com.taosdata.jdbc.springbootdemo.dao=debug
     </update>
 ```
 
-* 插入单条记录
+* Insert a single record
 ```xml
 <!-- weatherMapper.xml -->
     <insert id="insert" parameterType="Weather" >
         insert into test.weather (ts, temperature, humidity) values (now, #{temperature,jdbcType=INTEGER}, #{humidity,jdbcType=FLOAT})
     </insert>
 ```
-* 插入多条记录
+* Insert multiple records
 ```xml
 <!-- weatherMapper.xml -->
 <insert id="batchInsert" parameterType="java.util.List" >
@@ -69,7 +69,7 @@ logging.level.com.taosdata.jdbc.springbootdemo.dao=debug
     </foreach>
 </insert>
 ```
-* 分页查询
+* Pagination query
 ```xml
 <!-- weatherMapper.xml -->
 <?xml version="1.0" encoding="UTF-8"?>

docs/examples/JDBC/taosdemo/readme.md

@@ -1,11 +1,14 @@
 ```
 cd tests/examples/JDBC/taosdemo
 mvn clean package -Dmaven.test.skip=true
-# 先建表，再插入的
+# Create tables first, then insert data
 java -jar target/taosdemo-2.0.1-jar-with-dependencies.jar -host <hostname> -database <db name> -doCreateTable true -superTableSQL "create table weather(ts timestamp, f1 int) tags(t1 nchar(4))" -numOfTables 1000 -numOfRowsPerTable 100000000 -numOfThreadsForInsert 10 -numOfTablesPerSQL 10 -numOfValuesPerSQL 100
-# 不建表，直接插入的
+# Insert data directly without creating tables
 java -jar target/taosdemo-2.0.1-jar-with-dependencies.jar -host <hostname> -database <db name> -doCreateTable false -superTableSQL "create table weather(ts timestamp, f1 int) tags(t1 nchar(4))" -numOfTables 1000 -numOfRowsPerTable 100000000 -numOfThreadsForInsert 10 -numOfTablesPerSQL 10 -numOfValuesPerSQL 100
 ```
 
 如果发生错误 Exception in thread "main" java.lang.UnsatisfiedLinkError: no taos in java.library.path
 请检查是否安装 TDengine 客户端安装包或编译 TDengine 安装。如果确定已经安装过还出现这个错误，可以在命令行 java 后加 -Djava.library.path=/usr/lib 来指定寻找共享库的路径。
+
+
+If you encounter the error Exception in thread "main" `java.lang.UnsatisfiedLinkError: no taos in java.library.path`, please check whether the TDengine client package is installed or TDengine is compiled and installed. If you are sure it is installed and still encounter this error, you can add `-Djava.library.path=/usr/lib` after the `java` command to specify the path to the shared library.

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/TaosDemoApplication.java

@@ -24,14 +24,14 @@ public class TaosDemoApplication {
     private static final Logger logger = LogManager.getLogger(TaosDemoApplication.class);
 
     public static void main(String[] args) throws IOException {
-        // 读配置参数
+        // Read configuration parameters
         JdbcTaosdemoConfig config = new JdbcTaosdemoConfig(args);
         boolean isHelp = Arrays.asList(args).contains("--help");
         if (isHelp || config.host == null || config.host.isEmpty()) {
             JdbcTaosdemoConfig.printHelp();
             System.exit(0);
         }
-        // 初始化
+        //
         final DataSource dataSource = DataSourceFactory.getInstance(config.host, config.port, config.user,
                 config.password);
         if (config.executeSql != null && !config.executeSql.isEmpty()
@@ -50,7 +50,7 @@ public class TaosDemoApplication {
         final SuperTableService superTableService = new SuperTableService(dataSource);
         final SubTableService subTableService = new SubTableService(dataSource);
 
-        // 创建数据库
+        // create database
         long start = System.currentTimeMillis();
         Map<String, String> databaseParam = new HashMap<>();
         databaseParam.put("database", config.database);
@@ -81,13 +81,13 @@ public class TaosDemoApplication {
                     config.prefixOfFields, config.numOfTags, config.prefixOfTags);
         }
         /**********************************************************************************/
-        // 建表
+        // create table
         start = System.currentTimeMillis();
         if (config.doCreateTable) {
             superTableService.drop(superTableMeta.getDatabase(), superTableMeta.getName());
             superTableService.create(superTableMeta);
             if (!config.autoCreateTable) {
-                // 批量建子表
+                // create sub tables in batch
                 subTableService.createSubTable(superTableMeta, config.numOfTables, config.prefixOfTable,
                         config.numOfThreadsForCreate);
             }
@@ -95,7 +95,7 @@ public class TaosDemoApplication {
         end = System.currentTimeMillis();
         logger.info(">>> create table time cost : " + (end - start) + " ms.");
         /**********************************************************************************/
-        // 插入
+        // insert data
         long tableSize = config.numOfTables;
         int threadSize = config.numOfThreadsForInsert;
         long startTime = getProperStartTime(config.startTime, config.days);
@@ -111,10 +111,9 @@ public class TaosDemoApplication {
         end = System.currentTimeMillis();
         logger.info("insert " + affectedRows + " rows, time cost: " + (end - start) + " ms");
         /**********************************************************************************/
-        // 查询
 
         /**********************************************************************************/
-        // 删除表
+        // drop table
         if (config.dropTable) {
             superTableService.drop(config.database, config.superTable);
         }

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/SubTableMapper.java

@@ -9,21 +9,22 @@ import java.util.List;
 @Repository
 public interface SubTableMapper {
 
-    // 创建：子表
+    // Create: SubTable
     void createUsingSuperTable(SubTableMeta subTableMeta);
 
-    // 插入：一张子表多个values
+    // Insert: Multiple records into one SubTable
     int insertOneTableMultiValues(SubTableValue subTableValue);
 
-    // 插入：一张子表多个values, 自动建表
+    // Insert: Multiple records into one SubTable, auto create SubTables
     int insertOneTableMultiValuesUsingSuperTable(SubTableValue subTableValue);
 
-    // 插入：多张表多个values
+    // Insert: Multiple records into multiple SubTable
     int insertMultiTableMultiValues(List<SubTableValue> tables);
 
-    // 插入：多张表多个values，自动建表
+    // Insert: Multiple records into multiple SubTable, auto create SubTables
     int insertMultiTableMultiValuesUsingSuperTable(List<SubTableValue> tables);
 
-    //<!-- TODO:修改子表标签值 alter table ${tablename} set tag tagName=newTagValue-->
+    // <!-- TODO: Modify SubTable tag value: alter table ${tablename} set tag
+    // tagName=newTagValue-->
 
-}
+}

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/SuperTableMapper.java

@@ -6,24 +6,26 @@ import org.springframework.stereotype.Repository;
 @Repository
 public interface SuperTableMapper {
 
-    // 创建超级表 create table if not exists xxx.xxx (f1 type1, f2 type2, ... ) tags( t1 type1, t2 type2 ...)
+    // Create super table: create table if not exists xxx.xxx (f1 type1, f2 type2,
+    // ... ) tags( t1 type1, t2 type2 ...)
     void createSuperTable(SuperTableMeta tableMetadata);
 
-    // 删除超级表 drop table if exists xxx;
+    // Drop super table: drop table if exists xxx;
     void dropSuperTable(String database, String name);
 
-    //<!-- TODO:查询所有超级表信息 show stables -->
+    // <!-- TODO: Query all super table information show stables -->
 
-    //<!-- TODO:查询表结构 describe stable -->
+    // <!-- TODO: Query table structure describe stable -->
 
-    //<!-- TODO:增加列 alter table ${tablename} add column fieldName dataType -->
+    // <!-- TODO: Add column alter table ${tablename} add column fieldName dataType
+    // -->
 
-    //<!-- TODO:删除列 alter table ${tablename} drop column fieldName -->
+    // <!-- TODO: Drop column alter table ${tablename} drop column fieldName -->
 
-    //<!-- TODO:添加标签 alter table ${tablename} add tag new_tagName tag_type -->
+    // <!-- TODO: Add tag alter table ${tablename} add tag new_tagName tag_type -->
 
-    //<!-- TODO:删除标签 alter table ${tablename} drop tag_name -->
+    // <!-- TODO: Drop tag alter table ${tablename} drop tag_name -->
-
-    //<!-- TODO:修改标签名 alter table ${tablename} change tag old_tagName new_tagName -->
 
+    // <!-- TODO: Change tag name alter table ${tablename} change tag old_tagName
+    // new_tagName -->
 }

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/dao/TableMapper.java

@@ -9,19 +9,18 @@ import java.util.List;
 @Repository
 public interface TableMapper {
 
-    // 创建：普通表
+    // Create: Normal table
     void create(TableMeta tableMeta);
 
-    // 插入：一张表多个value
+    // Insert: Multiple records into one table
     int insertOneTableMultiValues(TableValue values);
 
-    // 插入: 一张表多个value，指定的列
+    // Insert: Multiple records into one table, specified columns
     int insertOneTableMultiValuesWithColumns(TableValue values);
 
-    // 插入：多个表多个value
+    // Insert: Multiple records into multiple tables
     int insertMultiTableMultiValues(List<TableValue> tables);
 
-    // 插入：多个表多个value, 指定的列
+    // Insert: Multiple records into multiple tables, specified columns
     int insertMultiTableMultiValuesWithColumns(List<TableValue> tables);
-
+}
-}

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/DatabaseService.java

@@ -14,12 +14,12 @@ public class DatabaseService {
         this.databaseMapper = new DatabaseMapperImpl(dataSource);
     }
 
-    // 建库，指定 name
+    // Create database with specified name
     public void createDatabase(String database) {
         databaseMapper.createDatabase(database);
     }
 
-    // 建库，指定参数 keep,days,replica等
+    // Create database with specified parameters such as keep, days, replica, etc.
     public void createDatabase(Map<String, String> map) {
         if (map.isEmpty())
             return;

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/SubTableService.java

@@ -27,7 +27,8 @@ public class SubTableService extends AbstractService {
         this.mapper = new SubTableMapperImpl(datasource);
     }
 
-    public void createSubTable(SuperTableMeta superTableMeta, long numOfTables, String prefixOfTable, int numOfThreadsForCreate) {
+    public void createSubTable(SuperTableMeta superTableMeta, long numOfTables, String prefixOfTable,
+            int numOfThreadsForCreate) {
         ExecutorService executor = Executors.newFixedThreadPool(numOfThreadsForCreate);
         for (long i = 0; i < numOfTables; i++) {
             long tableIndex = i;
@@ -35,54 +36,58 @@ public class SubTableService extends AbstractService {
         }
         executor.shutdown();
         try {
-            executor.awaitTermination(Long.MAX_VALUE,TimeUnit.NANOSECONDS);
+            executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
         } catch (InterruptedException e) {
             e.printStackTrace();
         }
     }
 
     public void createSubTable(SuperTableMeta superTableMeta, String tableName) {
-        // 构造数据
+        // Construct data
         SubTableMeta meta = SubTableMetaGenerator.generate(superTableMeta, tableName);
         createSubTable(meta);
     }
 
-    // 创建一张子表，可以指定database，supertable，tablename，tag值
+    // Create a sub-table, specifying database, super table, table name, and tag
+    // values
     public void createSubTable(SubTableMeta subTableMeta) {
         mapper.createUsingSuperTable(subTableMeta);
     }
 
     /*************************************************************************************************************************/
-    // 插入：多线程，多表
+    // Insert: Multi-threaded, multiple tables
     public int insert(List<SubTableValue> subTableValues, int threadSize, int frequency) {
         ExecutorService executor = Executors.newFixedThreadPool(threadSize);
         Future<Integer> future = executor.submit(() -> insert(subTableValues));
         executor.shutdown();
-        //TODO：frequency
+        // TODO：frequency
         return getAffectRows(future);
     }
 
-    // 插入：单表，insert into xxx values(),()...
+    // Insert: Single table, insert into xxx values(),()...
     public int insert(SubTableValue subTableValue) {
         return mapper.insertOneTableMultiValues(subTableValue);
     }
 
-    // 插入: 多表，insert into xxx values(),()... xxx values(),()...
+    // Insert: Multiple tables, insert into xxx values(),()... xxx values(),()...
     public int insert(List<SubTableValue> subTableValues) {
         return mapper.insertMultiTableMultiValues(subTableValues);
     }
 
-    // 插入：单表，自动建表, insert into xxx using xxx tags(...) values(),()...
+    // Insert: Single table, auto-create table, insert into xxx using xxx tags(...)
+    // values(),()...
     public int insertAutoCreateTable(SubTableValue subTableValue) {
         return mapper.insertOneTableMultiValuesUsingSuperTable(subTableValue);
     }
 
-    // 插入：多表，自动建表, insert into xxx using XXX tags(...) values(),()... xxx using XXX tags(...) values(),()...
+    // Insert: Multiple tables, auto-create tables, insert into xxx using XXX
+    // tags(...) values(),()... xxx using XXX tags(...) values(),()...
     public int insertAutoCreateTable(List<SubTableValue> subTableValues) {
         return mapper.insertMultiTableMultiValuesUsingSuperTable(subTableValues);
     }
 
-    public int insertMultiThreads(SuperTableMeta superTableMeta, int threadSize, long tableSize, long startTime, long gap, JdbcTaosdemoConfig config) {
+    public int insertMultiThreads(SuperTableMeta superTableMeta, int threadSize, long tableSize, long startTime,
+            long gap, JdbcTaosdemoConfig config) {
         List<FutureTask> taskList = new ArrayList<>();
         List<Thread> threads = IntStream.range(0, threadSize)
                 .mapToObj(i -> {
@@ -94,8 +99,7 @@ public class SubTableService extends AbstractService {
                                     startTime, config.timeGap,
                                     config.numOfRowsPerTable, config.numOfTablesPerSQL, config.numOfValuesPerSQL,
                                     config.order, config.rate, config.range,
-                                    config.prefixOfTable, config.autoCreateTable)
+                                    config.prefixOfTable, config.autoCreateTable));
-                    );
                     taskList.add(task);
                     return new Thread(task, "InsertThread-" + i);
                 }).collect(Collectors.toList());
@@ -126,7 +130,7 @@ public class SubTableService extends AbstractService {
     private class InsertTask implements Callable<Integer> {
 
         private final long startTableInd; // included
-        private final long endTableInd;   // excluded
+        private final long endTableInd; // excluded
         private final long startTime;
         private final long timeGap;
         private final long numOfRowsPerTable;
@@ -140,10 +144,10 @@ public class SubTableService extends AbstractService {
         private final boolean autoCreateTable;
 
         public InsertTask(SuperTableMeta superTableMeta, long startTableInd, long endTableInd,
-                          long startTime, long timeGap,
+                long startTime, long timeGap,
-                          long numOfRowsPerTable, long numOfTablesPerSQL, long numOfValuesPerSQL,
+                long numOfRowsPerTable, long numOfTablesPerSQL, long numOfValuesPerSQL,
-                          int order, int rate, long range,
+                int order, int rate, long range,
-                          String prefixOfTable, boolean autoCreateTable) {
+                String prefixOfTable, boolean autoCreateTable) {
             this.superTableMeta = superTableMeta;
             this.startTableInd = startTableInd;
             this.endTableInd = endTableInd;
@@ -159,7 +163,6 @@ public class SubTableService extends AbstractService {
             this.autoCreateTable = autoCreateTable;
         }
 
-
         @Override
         public Integer call() {
 
@@ -171,23 +174,27 @@ public class SubTableService extends AbstractService {
 
             int affectRows = 0;
             // row
-            for (long rowCnt = 0; rowCnt < numOfRowsPerTable; ) {
+            for (long rowCnt = 0; rowCnt < numOfRowsPerTable;) {
                 long rowSize = numOfValuesPerSQL;
                 if (rowCnt + rowSize > numOfRowsPerTable) {
                     rowSize = numOfRowsPerTable - rowCnt;
                 }
-                //table
+                // table
-                for (long tableCnt = startTableInd; tableCnt < endTableInd; ) {
+                for (long tableCnt = startTableInd; tableCnt < endTableInd;) {
                     long tableSize = numOfTablesPerSQL;
                     if (tableCnt + tableSize > endTableInd) {
                         tableSize = endTableInd - tableCnt;
                     }
                     long startTime = this.startTime + rowCnt * timeGap;
-//                    System.out.println(Thread.currentThread().getName() + " >>> " + "rowCnt: " + rowCnt + ", rowSize: " + rowSize + ", " + "tableCnt: " + tableCnt + ",tableSize: " + tableSize + ", " + "startTime: " + startTime + ",timeGap: " + timeGap + "");
+                    // System.out.println(Thread.currentThread().getName() + " >>> " + "rowCnt: " +
+                    // rowCnt + ", rowSize: " + rowSize + ", " + "tableCnt: " + tableCnt +
+                    // ",tableSize: " + tableSize + ", " + "startTime: " + startTime + ",timeGap: "
+                    // + timeGap + "");
                     /***********************************************/
-                    // 生成数据
+                    // Construct data
-                    List<SubTableValue> data = SubTableValueGenerator.generate(superTableMeta, prefixOfTable, tableCnt, tableSize, rowSize, startTime, timeGap);
+                    List<SubTableValue> data = SubTableValueGenerator.generate(superTableMeta, prefixOfTable, tableCnt,
-                    // 乱序
+                            tableSize, rowSize, startTime, timeGap);
+                    // disorder
                     if (order != 0)
                         SubTableValueGenerator.disrupt(data, rate, range);
                     // insert
@@ -205,5 +212,4 @@ public class SubTableService extends AbstractService {
         }
     }
 
-
 }

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/SuperTableService.java

@@ -14,7 +14,7 @@ public class SuperTableService {
         this.superTableMapper = new SuperTableMapperImpl(dataSource);
     }
 
-    // 创建超级表，指定每个field的名称和类型，每个tag的名称和类型
+    // Create super table, specifying the name and type of each field and each tag
     public void create(SuperTableMeta superTableMeta) {
         superTableMapper.createSuperTable(superTableMeta);
     }

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/TableService.java

@@ -11,15 +11,14 @@ public class TableService extends AbstractService {
 
     private TableMapper tableMapper;
 
-    //创建一张表
+    // Create a table
     public void create(TableMeta tableMeta) {
         tableMapper.create(tableMeta);
     }
 
-    //创建多张表
+    // Create multiple tables
     public void create(List<TableMeta> tables) {
         tables.stream().forEach(this::create);
     }
 
-
 }

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/data/FieldValueGenerator.java

@@ -11,7 +11,8 @@ public class FieldValueGenerator {
 
     public static Random random = new Random(System.currentTimeMillis());
 
-    // 生成start到end的时间序列，时间戳为顺序，不含有乱序，field的value为随机生成
+    // Generate a time series from start to end, timestamps are in order without
+    // disorder, field values are randomly generated
     public static List<RowValue> generate(long start, long end, long timeGap, List<FieldMeta> fieldMetaList) {
         List<RowValue> values = new ArrayList<>();
 
@@ -29,9 +30,12 @@ public class FieldValueGenerator {
         return values;
     }
 
-    // 生成start到end的时间序列，时间戳为顺序，含有乱序，rate为乱序的比例，range为乱序前跳范围，field的value为随机生成
+    // Generate a time series from start to end, timestamps are in order but include
+    // disorder, rate is the proportion of disorder, range is the jump range before
+    // disorder, field values are randomly generated
     public static List<RowValue> disrupt(List<RowValue> values, int rate, long range) {
-        long timeGap = (long) (values.get(1).getFields().get(0).getValue()) - (long) (values.get(0).getFields().get(0).getValue());
+        long timeGap = (long) (values.get(1).getFields().get(0).getValue())
+                - (long) (values.get(0).getFields().get(0).getValue());
         int bugSize = values.size() * rate / 100;
         Set<Integer> bugIndSet = new HashSet<>();
         while (bugIndSet.size() < bugSize) {

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/data/SubTableMetaGenerator.java

@@ -9,7 +9,7 @@ import java.util.List;
 
 public class SubTableMetaGenerator {
 
-    // 创建tableSize张子表，使用tablePrefix作为子表名的前缀，使用superTableMeta的元数据
+    // Create tableSize sub-tables, using tablePrefix as the prefix for sub-table names, and using the metadata from superTableMeta
     // create table xxx using XXX tags(XXX)
     public static List<SubTableMeta> generate(SuperTableMeta superTableMeta, int tableSize, String tablePrefix) {
         List<SubTableMeta> subTableMetaList = new ArrayList<>();

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/data/SuperTableMetaGenerator.java

@@ -10,10 +10,11 @@ import java.util.List;
 
 public class SuperTableMetaGenerator {
 
-    // 创建超级表，使用指定SQL语句
+    // Create super table using the specified SQL statement
     public static SuperTableMeta generate(String superTableSQL) {
         SuperTableMeta tableMeta = new SuperTableMeta();
-        // for example : create table superTable (ts timestamp, temperature float, humidity int) tags(location nchar(64), groupId int)
+        // for example : create table superTable (ts timestamp, temperature float,
+        // humidity int) tags(location nchar(64), groupId int)
         superTableSQL = superTableSQL.trim().toLowerCase();
         if (!superTableSQL.startsWith("create"))
             throw new RuntimeException("invalid create super table SQL");
@@ -54,8 +55,9 @@ public class SuperTableMetaGenerator {
         return tableMeta;
     }
 
-    // 创建超级表,指定field和tag的个数
+    // Create super table with specified number of fields and tags
-    public static SuperTableMeta generate(String database, String name, int fieldSize, String fieldPrefix, int tagSize, String tagPrefix) {
+    public static SuperTableMeta generate(String database, String name, int fieldSize, String fieldPrefix, int tagSize,
+            String tagPrefix) {
         if (fieldSize < 2 || tagSize < 1) {
             throw new RuntimeException("create super table but fieldSize less than 2 or tagSize less than 1");
         }
@@ -66,7 +68,8 @@ public class SuperTableMetaGenerator {
         List<FieldMeta> fields = new ArrayList<>();
         fields.add(new FieldMeta("ts", "timestamp"));
         for (int i = 1; i <= fieldSize; i++) {
-            fields.add(new FieldMeta(fieldPrefix + "" + i, TaosConstants.DATA_TYPES[i % TaosConstants.DATA_TYPES.length]));
+            fields.add(
+                    new FieldMeta(fieldPrefix + "" + i, TaosConstants.DATA_TYPES[i % TaosConstants.DATA_TYPES.length]));
         }
         tableMetadata.setFields(fields);
         // tags

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/service/data/TagValueGenerator.java

@@ -9,7 +9,7 @@ import java.util.List;
 
 public class TagValueGenerator {
 
-    // 创建标签值：使用tagMetas
+    // Create tag values using tagMetas
     public static List<TagValue> generate(List<TagMeta> tagMetas) {
         List<TagValue> tagValues = new ArrayList<>();
         for (int i = 0; i < tagMetas.size(); i++) {

docs/examples/JDBC/taosdemo/src/main/java/com/taosdata/taosdemo/utils/TimeStampUtil.java

@@ -41,17 +41,17 @@ public class TimeStampUtil {
         if (start == 0)
             start = now - size * timeGap;
 
-        // 如果size小于1异常
+        // If size is less than 1, throw an exception
         if (size < 1)
             throw new IllegalArgumentException("size less than 1.");
-        // 如果timeGap为1，已经超长，需要前移start
+        // If timeGap is 1 and it exceeds the limit, move start forward
         if (start + size > now) {
             start = now - size;
             return new TimeTuple(start, now, 1);
         }
         long end = start + (long) (timeGap * size);
         if (end > now) {
-            //压缩timeGap
+            // Compress timeGap
             end = now;
             double gap = (end - start) / (size * 1.0f);
             if (gap < 1.0f) {

docs/examples/JDBC/taosdemo/src/main/resources/log4j.properties

@@ -1,21 +1,21 @@
-### 设置###
+### Settings ###
 log4j.rootLogger=info,stdout
-### 输出信息到控制抬 ###
+### Output information to the console ###
 log4j.appender.stdout=org.apache.log4j.ConsoleAppender
 log4j.appender.stdout.Target=System.out
 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
 log4j.appender.stdout.layout.ConversionPattern=[%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
-### 输出DEBUG 级别以上的日志到=logs/debug.log
+### Output logs of DEBUG level and above to logs/debug.log ###
 log4j.appender.DebugLog=org.apache.log4j.DailyRollingFileAppender
 log4j.appender.DebugLog.File=logs/debug.log
 log4j.appender.DebugLog.Append=true
 log4j.appender.DebugLog.Threshold=DEBUG 
 log4j.appender.DebugLog.layout=org.apache.log4j.PatternLayout
 log4j.appender.DebugLog.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
-### 输出ERROR 级别以上的日志到=logs/error.log
+### Output logs of ERROR level and above to logs/error.log ###
 log4j.appender.ErrorLog=org.apache.log4j.DailyRollingFileAppender
 log4j.appender.ErrorLog.File=logs/error.log 
 log4j.appender.ErrorLog.Append=true
 log4j.appender.ErrorLog.Threshold=ERROR 
 log4j.appender.ErrorLog.layout=org.apache.log4j.PatternLayout
-log4j.appender.ErrorLog.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
+log4j.appender.ErrorLog.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n