change

src/connector/jdbc/src/main/java/TdEngineSuperDataGen.java

@@ -14,54 +14,54 @@ import org.apache.commons.codec.digest.DigestUtils;
 
 public class TdEngineSuperDataGen {
 
-	public static void main(String[] args) throws ClassNotFoundException, SQLException {
-		Class.forName("com.taosdata.jdbc.TSDBDriver");
-		String url = "jdbc:TAOS://127.0.0.1:6030/test?user=root&password=taosdata";
-		Connection conn = DriverManager.getConnection(url);
-		Statement stmt = conn.createStatement();
-		// create database
-		stmt.executeUpdate("create database if not exists hdb");
-		// use database
-		stmt.executeUpdate("use hdb");
-		stmt.executeUpdate("drop table if exists sdata");
-		// create table
-		stmt.executeUpdate(
-				"create table if not exists sdata (uptime timestamp, id int, x int , y int ,cmt binary(100)) tags(location nchar(100),tname nchar(100))");
+    public static void main(String[] args) throws ClassNotFoundException, SQLException {
+        Class.forName("com.taosdata.jdbc.TSDBDriver");
+        String url = "jdbc:TAOS://127.0.0.1:6030/test?user=root&password=taosdata";
+        Connection conn = DriverManager.getConnection(url);
+        Statement stmt = conn.createStatement();
+        // create database
+        stmt.executeUpdate("create database if not exists hdb");
+        // use database
+        stmt.executeUpdate("use hdb");
+        stmt.executeUpdate("drop table if exists sdata");
+        // create table
+        stmt.executeUpdate(
+                "create table if not exists sdata (uptime timestamp, id int, x int , y int ,cmt binary(100)) tags(location nchar(100),tname nchar(100))");
 
-		ZoneId zoneId = ZoneId.systemDefault();
-		Map<String, String> table = new HashMap<>();
-		table.put("dt001", "beijing");
-		table.put("dt002", "shanghai");
-		table.put("dt003", "chongqing");
-		table.put("dt004", "xian");
-		for (Entry<String, String> kv : table.entrySet()) {
-			LocalDateTime d = LocalDateTime.now().minusMonths(2);
-			long rowCount = LocalDateTime.now().atZone(zoneId).toEpochSecond() - d.atZone(zoneId).toEpochSecond();
-			Random r = new Random();
-			StringBuilder sb = null;
-			long startTime = System.currentTimeMillis();
-			try {
-				for (long i = 0; i < rowCount; i++) {
-					sb = new StringBuilder("insert into " + kv.getKey() + " using sdata tags(" + kv.getValue() + ","
-							+ kv.getKey() + ") values('");
-					d = d.plusSeconds(1);
-					sb.append(d.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.MS")));
-					sb.append("'," + i + "," + r.nextInt(100) + "," + r.nextInt(100) + ",'");
-					sb.append(DigestUtils.md5Hex(d.toString()));
-					sb.append("')");
-					stmt.executeUpdate(sb.toString());
-				}
-			} catch (SQLException e) {
-				System.out.println(d);
-				System.out.println(sb.toString());
-				e.printStackTrace();
-			}
-			long endTime = System.currentTimeMillis();
-			System.out.println("generate data execute time:" + (endTime - startTime) + "ms, resultset rows " + rowCount
-					+ ", " + rowCount * 1000 / (endTime - startTime) + " rows/sec");
-		}
-		stmt.close();
-		conn.close();
-	}
+        ZoneId zoneId = ZoneId.systemDefault();
+        Map<String, String> table = new HashMap<>();
+        table.put("dt001", "beijing");
+        table.put("dt002", "shanghai");
+        table.put("dt003", "chongqing");
+        table.put("dt004", "xian");
+        for (Entry<String, String> kv : table.entrySet()) {
+            LocalDateTime d = LocalDateTime.now().minusMonths(2);
+            long rowCount = LocalDateTime.now().atZone(zoneId).toEpochSecond() - d.atZone(zoneId).toEpochSecond();
+            Random r = new Random();
+            StringBuilder sb = null;
+            long startTime = System.currentTimeMillis();
+            try {
+                for (long i = 0; i < rowCount; i++) {
+                    sb = new StringBuilder("insert into " + kv.getKey() + " using sdata tags(" + kv.getValue() + "," + kv.getKey() + ") values('");
+                    d = d.plusSeconds(1);
+                    sb.append(d.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.MS")));
+                    sb.append("'," + i + "," + r.nextInt(100) + "," + r.nextInt(100) + ",'");
+                    sb.append(DigestUtils.md5Hex(d.toString()));
+                    sb.append("')");
+                    System.out.println("SQL >>> " + sb.toString());
+                    stmt.executeUpdate(sb.toString());
+                }
+            } catch (SQLException e) {
+                System.out.println(d);
+                System.out.println(sb.toString());
+                e.printStackTrace();
+            }
+            long endTime = System.currentTimeMillis();
+            System.out.println("generate data execute time:" + (endTime - startTime) + "ms, resultset rows " + rowCount
+                    + ", " + rowCount * 1000 / (endTime - startTime) + " rows/sec");
+        }
+        stmt.close();
+        conn.close();
+    }
 
 }