Example usage for io.vertx.sqlclient Pool getConnection

Introduction

In this page you can find the example usage for io.vertx.sqlclient Pool getConnection.

Prototype

void getConnection(Handler<AsyncResult<SqlConnection>> handler);

Source Link

Document

Get a connection from the pool.

Usage

From source file:examples.SqlClientExamples.java

License:Apache License

public void usingConnections01(Vertx vertx, Pool pool) {

    pool.getConnection(ar1 -> {
        if (ar1.succeeded()) {
            SqlConnection connection = ar1.result();

            connection.query("SELECT * FROM users WHERE id='julien'", ar2 -> {
                if (ar1.succeeded()) {
                    connection.query("SELECT * FROM users WHERE id='paulo'", ar3 -> {
                        // Do something with rows and return the connection to the pool
                        connection.close();
                    });/*from w w w.  j  a v  a  2s.  c o  m*/
                } else {
                    // Return the connection to the pool
                    connection.close();
                }
            });
        }
    });
}

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From source file:examples.SqlClientExamples.java

License:Apache License

public void transaction01(Pool pool) {
    pool.getConnection(res -> {
        if (res.succeeded()) {

            // Transaction must use a connection
            SqlConnection conn = res.result();

            // Begin the transaction
            Transaction tx = conn.begin();

            // Various statements
            conn.query("INSERT INTO Users (first_name,last_name) VALUES ('Julien','Viet')", ar1 -> {
                if (ar1.succeeded()) {
                    conn.query("INSERT INTO Users (first_name,last_name) VALUES ('Emad','Alblueshi')", ar2 -> {
                        if (ar2.succeeded()) {
                            // Commit the transaction
                            tx.commit(ar3 -> {
                                if (ar3.succeeded()) {
                                    System.out.println("Transaction succeeded");
                                } else {
                                    System.out.println("Transaction failed " + ar3.cause().getMessage());
                                }//from w  w w. java2s.  c  o m
                                // Return the connection to the pool
                                conn.close();
                            });
                        } else {
                            // Return the connection to the pool
                            conn.close();
                        }
                    });
                } else {
                    // Return the connection to the pool
                    conn.close();
                }
            });
        }
    });
}

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