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Jul 22nd, 2017
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Java 5 1.65 KB | None | 0 0
  1. import java.sql.Connection;
  2. import java.sql.DriverManager;
  3. import java.sql.PreparedStatement;
  4. import java.sql.SQLException;
  5.  
  6. public class H2 {
  7.     private static final String FILLER = "ABCDEFGHIJKLMNOPRSTUWYZabcdefghijklmnoprstuwyz1234567890";
  8.     private static final int NUMBER_OF_INSERTIONS = 100000;
  9.  
  10.     /**
  11.      * @param args
  12.      * @throws SQLException
  13.      */
  14.     public static void main(final String[] args) throws SQLException {
  15.         // final Connection connection =
  16.         // DriverManager.getConnection("jdbc:h2:db/TEST;DB_CLOSE_ON_EXIT=TRUE",
  17.         // "sa", null);
  18.         final Connection connection = DriverManager.getConnection(
  19.                 "jdbc:h2:tcp://localhost/~/test", "sa", null);
  20.         connection.createStatement().executeUpdate("DROP TABLE IF EXISTS data");
  21.         connection
  22.                 .createStatement()
  23.                 .executeUpdate(
  24.                         "CREATE TABLE `data` (`id` IDENTITY NOT NULL, `timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, `name` varchar(128) DEFAULT NULL,`author` varchar(128) DEFAULT NULL, `notes` varchar(128) DEFAULT NULL);");
  25.         final PreparedStatement preparedStatement = connection
  26.                 .prepareStatement("INSERT INTO data (name, author, notes) VALUES(?,?,?)");
  27.  
  28.         int numberOfInsertions = NUMBER_OF_INSERTIONS;
  29.         final long startTime = System.currentTimeMillis();
  30.  
  31.         while (numberOfInsertions-- > 0) {
  32.             preparedStatement.setString(1, FILLER);
  33.             preparedStatement.setString(2, FILLER);
  34.             preparedStatement.setString(3, FILLER);
  35.             preparedStatement.executeUpdate();
  36.         }
  37.  
  38.         final long stopTime = System.currentTimeMillis();
  39.         final long deltaSeconds = (stopTime - startTime) / 1000L;
  40.  
  41.         preparedStatement.close();
  42.         connection.close();
  43.  
  44.         System.out.println(NUMBER_OF_INSERTIONS / deltaSeconds + "/s");
  45.     }
  46. }
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