async-mysql-client

Asynchronous mysql client.

Get it from maven:

<dependency>
  <groupId>io.github.laplacedemon</groupId>
  <artifactId>async-mysql-client</artifactId>
  <version>0.1.0</version>
</dependency>

Base

Create a asyncMySQL :

AsyncMySQL asyncMySQL = AsyncMySQL.create();

Create a config :

Config config = asyncMySQL.makeConfig("192.168.56.101", 3306, "root", "123456");

Connection

Get useful MySQL connections asynchronously :

asyncMySQL.connect(config, (Connection con) -> {
    System.out.println("Connection completed!");
});

asyncMySQL.start();

Asynchronous execution of sql statement

Query sql statement :

final String sql = "select 1+1,1+2,2+3,3+5";

asyncMySQL.connect(config, (Connection con) -> {
    System.out.println("Connection completed!");
    AsyncPreparedStatement asyncPS = con.prepareStatement(sql);
    con.executeQuery(asyncPS, (ResultSet resultset)->{
        System.out.println("查询完成！");
        printResultSet(resultset);
    });
});

asyncMySQL.start();

Written sql statement :

final String sql = "INSERT INTO `testdb`.`t_student` (`name`, `age`) VALUES ('xiaoming04', '4')";

asyncMySQL.connect(config, (Connection con) -> {
    System.out.println("Connection completed!");
    con.executeUpdate(sql, (long count, long id)->{
        printResultSet(count, id);
    });
});

asyncMySQL.start();

Connection Pool

final String sql = "select 1+1,1+2,2+3,3+5";

final ConnectionPool cp = asyncMySQL.createPool(config, 10);

cp.get(con -> {
    System.out.println("Number of idle connections:" 
                        + cp.getFreeConnectionCount());
    con.executeQuery(sql, r -> {
        printResultSet(r);
    });
});
System.out.println("Number of idle connections:" + cp.getFreeConnectionCount());

asyncMySQL.start();

asyncMySQL.createPool(config, 10, (ConnectionPool cp)->{
    cp.get(con -> {
        System.out.println("Number of idle connections:"
                            + cp.getFreeConnectionCount());
        con.executeQuery(sql, r -> {
            printResultSet(r);
        });
    });
    
    System.out.println("Number of idle connections:" + cp.getFreeConnectionCount());
});

asyncMySQL.start();

Use transaction

asyncMySQL.connect(config, (Connection con) -> {
    con.beginTxn(() -> {
        con.executeUpdate("INSERT INTO `testdb`.`t_student` (`name`, `age`) VALUES ('xiaohong01', 12)", (long count0, long id0)->{
            System.out.println("Completion of transaction 1...");

            con.executeUpdate("INSERT INTO `testdb`.`t_student` (`name`, `age`) VALUES ('xiaohong02', 13)",(long count1, long id1) -> {
                System.out.println("Completion of transaction 2...");
                
                con.endTxn(()->{
                    System.out.println("End of transaction");
                });
            });
        });
    });
});

asyncMySQL.start();