examples.JDBCDataSourceExamples.java Source code

Introduction

Here is the source code for examples.JDBCDataSourceExamples.java

Source

/*
 * Copyright (c) 2011-2016 The original author or authors
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Apache License v2.0 which accompanies this distribution.
 *
 *      The Eclipse Public License is available at
 *      http://www.eclipse.org/legal/epl-v10.html
 *
 *      The Apache License v2.0 is available at
 *      http://www.opensource.org/licenses/apache2.0.php
 *
 * You may elect to redistribute this code under either of these licenses.
 */

package examples;

import io.vertx.core.json.JsonObject;
import io.vertx.servicediscovery.ServiceDiscovery;
import io.vertx.servicediscovery.Record;
import io.vertx.servicediscovery.ServiceReference;
import io.vertx.servicediscovery.types.JDBCDataSource;
import io.vertx.ext.jdbc.JDBCClient;

/**
 * @author <a href="http://escoffier.me">Clement Escoffier</a>
 */
public class JDBCDataSourceExamples {

    public void example1(ServiceDiscovery discovery) {
        Record record = JDBCDataSource.createRecord("some-data-source-service", // The service name
                new JsonObject().put("url", "some jdbc url"), // The location
                new JsonObject().put("some-metadata", "some-value") // Some metadata
        );

        discovery.publish(record, ar -> {
            // ...
        });
    }

    public void example2(ServiceDiscovery discovery) {
        // Get the record
        discovery.getRecord(new JsonObject().put("name", "some-data-source-service"), ar -> {
            if (ar.succeeded() && ar.result() != null) {
                // Retrieve the service reference
                ServiceReference reference = discovery.getReferenceWithConfiguration(ar.result(), // The record
                        new JsonObject().put("username", "clement").put("password", "*****")); // Some additional metadata

                // Retrieve the service object
                JDBCClient client = reference.get();

                // ...

                // when done
                reference.release();
            }
        });
    }

    public void example3(ServiceDiscovery discovery) {
        JDBCDataSource.<JsonObject>getJDBCClient(discovery,
                new JsonObject().put("name", "some-data-source-service"),
                new JsonObject().put("username", "clement").put("password", "*****"), // Some additional metadata
                ar -> {
                    if (ar.succeeded()) {
                        JDBCClient client = ar.result();

                        // ...

                        // Dont' forget to release the service
                        ServiceDiscovery.releaseServiceObject(discovery, client);

                    }
                });
    }

}