Example usage for io.vertx.pgclient PgConnection cancelRequest

Introduction

In this page you can find the example usage for io.vertx.pgclient PgConnection cancelRequest.

Prototype

PgConnection cancelRequest(Handler<AsyncResult<Void>> handler);

Source Link

Document

Send a request cancellation message to tell the server to cancel processing request in this connection.

Usage

From source file:examples.PgClientExamples.java

License:Apache License

public void cancelRequest(PgConnection connection) {
    connection.query("SELECT pg_sleep(20)", ar -> {
        if (ar.succeeded()) {
            // imagine this is a long query and is still running
            System.out.println("Query success");
        } else {/* w  w  w  .j  a v a2  s .  c  o m*/
            // the server will abort the current query after cancelling request
            System.out.println("Failed to query due to " + ar.cause().getMessage());
        }
    });
    connection.cancelRequest(ar -> {
        if (ar.succeeded()) {
            System.out.println("Cancelling request has been sent");
        } else {
            System.out.println("Failed to send cancelling request");
        }
    });
}

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