examples.MSSQLClientExamples Maven / Gradle / Ivy
/*
* Copyright (c) 2011-2019 Contributors to the Eclipse Foundation
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
* which is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
*/
package examples;
import io.vertx.core.Vertx;
import io.vertx.core.net.PemTrustOptions;
import io.vertx.docgen.Source;
import io.vertx.mssqlclient.MSSQLBuilder;
import io.vertx.mssqlclient.MSSQLConnectOptions;
import io.vertx.mssqlclient.MSSQLConnection;
import io.vertx.sqlclient.*;
import io.vertx.sqlclient.data.NullValue;
import java.util.Map;
import java.util.stream.Collector;
import java.util.stream.Collectors;
@Source
public class MSSQLClientExamples {
public void gettingStarted() {
// Connect options
MSSQLConnectOptions connectOptions = new MSSQLConnectOptions()
.setPort(1433)
.setHost("the-host")
.setDatabase("the-db")
.setUser("user")
.setPassword("secret");
// Pool options
PoolOptions poolOptions = new PoolOptions()
.setMaxSize(5);
// Create the client pool
Pool client = MSSQLBuilder.pool()
.with(poolOptions)
.connectingTo(connectOptions)
.build();
// A simple query
client
.query("SELECT * FROM users WHERE id='julien'")
.execute()
.onComplete(ar -> {
if (ar.succeeded()) {
RowSet result = ar.result();
System.out.println("Got " + result.size() + " rows ");
} else {
System.out.println("Failure: " + ar.cause().getMessage());
}
// Now close the pool
client.close();
});
}
public void configureFromDataObject(Vertx vertx) {
// Data object
MSSQLConnectOptions connectOptions = new MSSQLConnectOptions()
.setPort(1433)
.setHost("the-host")
.setDatabase("the-db")
.setUser("user")
.setPassword("secret");
// Pool Options
PoolOptions poolOptions = new PoolOptions().setMaxSize(5);
// Create the pool from the data object
Pool pool = MSSQLBuilder.pool()
.with(poolOptions)
.connectingTo(connectOptions)
.using(vertx)
.build();
pool.getConnection()
.onComplete(ar -> {
// Handling your connection
});
}
public void configureFromUri(Vertx vertx) {
// Connection URI
String connectionUri = "sqlserver://dbuser:[email protected]:1433/mydb";
// Create the pool from the connection URI
Pool pool = MSSQLBuilder.pool()
.connectingTo(connectionUri)
.using(vertx)
.build();
// Create the connection from the connection URI
MSSQLConnection.connect(vertx, connectionUri)
.onComplete(res -> {
// Handling your connection
});
}
public void connecting01(Vertx vertx) {
// Connect options
MSSQLConnectOptions connectOptions = new MSSQLConnectOptions()
.setPort(1433)
.setHost("the-host")
.setDatabase("the-db")
.setUser("user")
.setPassword("secret");
// Pool options
PoolOptions poolOptions = new PoolOptions()
.setMaxSize(5);
// Create the pooled client
Pool client = MSSQLBuilder.pool()
.with(poolOptions)
.connectingTo(connectOptions)
.using(vertx)
.build();
}
public void connecting02(Vertx vertx) {
// Connect options
MSSQLConnectOptions connectOptions = new MSSQLConnectOptions()
.setPort(1433)
.setHost("the-host")
.setDatabase("the-db")
.setUser("user")
.setPassword("secret");
// Pool options
PoolOptions poolOptions = new PoolOptions()
.setMaxSize(5);
// Create the pooled client
Pool client = MSSQLBuilder.pool()
.with(poolOptions)
.connectingTo(connectOptions)
.using(vertx)
.build();
}
public void connecting03(Pool pool) {
// Close the pool and all the associated resources
pool.close();
}
public void connecting04(Vertx vertx) {
// Connect options
MSSQLConnectOptions connectOptions = new MSSQLConnectOptions()
.setPort(1433)
.setHost("the-host")
.setDatabase("the-db")
.setUser("user")
.setPassword("secret");
// Pool options
PoolOptions poolOptions = new PoolOptions()
.setMaxSize(5);
// Create the pooled client
Pool client = MSSQLBuilder.pool()
.with(poolOptions)
.connectingTo(connectOptions)
.using(vertx)
.build();
// Get a connection from the pool
client.getConnection().compose(conn -> {
System.out.println("Got a connection from the pool");
// All operations execute on the same connection
return conn
.query("SELECT * FROM users WHERE id='julien'")
.execute()
.compose(res -> conn
.query("SELECT * FROM users WHERE id='emad'")
.execute())
.onComplete(ar -> {
// Release the connection to the pool
conn.close();
});
}).onComplete(ar -> {
if (ar.succeeded()) {
System.out.println("Done");
} else {
System.out.println("Something went wrong " + ar.cause().getMessage());
}
});
}
public void reconnectAttempts(MSSQLConnectOptions options) {
// The client will try to connect at most 3 times at a 1 second interval
options
.setReconnectAttempts(2)
.setReconnectInterval(1000);
}
public void collector01Example(SqlClient client) {
// Create a collector projecting a row set to a map
Collector> collector = Collectors.toMap(
row -> row.getLong("id"),
row -> row.getString("last_name"));
// Run the query with the collector
client.query("SELECT * FROM users")
.collecting(collector)
.execute()
.onComplete(ar -> {
if (ar.succeeded()) {
SqlResult> result = ar.result();
// Get the map created by the collector
Map map = result.value();
System.out.println("Got " + map);
} else {
System.out.println("Failure: " + ar.cause().getMessage());
}
});
}
public void collector02Example(SqlClient client) {
// Create a collector projecting a row set to a (last_name_1,last_name_2,...)
Collector collector = Collectors.mapping(
row -> row.getString("last_name"),
Collectors.joining(",", "(", ")")
);
// Run the query with the collector
client.query("SELECT * FROM users")
.collecting(collector)
.execute()
.onComplete(ar -> {
if (ar.succeeded()) {
SqlResult result = ar.result();
// Get the string created by the collector
String list = result.value();
System.out.println("Got " + list);
} else {
System.out.println("Failure: " + ar.cause().getMessage());
}
});
}
enum Color {
red, green, blue
}
public void enumeratedType01Example(SqlClient client) {
client
.preparedQuery("INSERT INTO colors VALUES (@p1)")
.execute(Tuple.of(Color.red))
.onComplete(res -> {
// ...
});
}
public void enumeratedType02Example(SqlClient client) {
client
.preparedQuery("SELECT color FROM colors")
.execute()
.onComplete(res -> {
if (res.succeeded()) {
RowSet rows = res.result();
for (Row row : rows) {
System.out.println(row.get(Color.class, "color"));
}
}
});
}
public void transparentNullHandling(SqlClient client) {
Tuple tuple = Tuple.tuple()
.addInteger(17)
.addString("The Man Who Knew Too Much")
.addString(null);
client
.preparedQuery("INSERT INTO movies (id, title, plot) VALUES (@p1, @p2, @p3)")
.execute(tuple)
.onComplete(res -> {
// ...
});
}
public void explicitNullHandling(SqlClient client) {
Tuple tuple = Tuple.of(17, "The Man Who Knew Too Much", NullValue.String);
client
.preparedQuery("INSERT INTO movies (id, title, plot) VALUES (@p1, @p2, @p3)")
.execute(tuple)
.onComplete(res -> {
// ...
});
}
public void identityColumn(SqlClient client) {
client
.preparedQuery("INSERT INTO movies (title) OUTPUT INSERTED.id VALUES (@p1)")
.execute(Tuple.of("The Man Who Knew Too Much"))
.onComplete(res -> {
if (res.succeeded()) {
Row row = res.result().iterator().next();
System.out.println(row.getLong("id"));
}
});
}
public void setSsl() {
// Require encryption for the entire connection
MSSQLConnectOptions connectOptions = new MSSQLConnectOptions().setSsl(true);
}
public void disableHostnameValidation() {
MSSQLConnectOptions connectOptions = new MSSQLConnectOptions()
.setSsl(true)
.setTrustAll(true);
}
public void usingTrustOptions() {
MSSQLConnectOptions connectOptions = new MSSQLConnectOptions()
.setSsl(true)
.setPemTrustOptions(new PemTrustOptions().addCertPath("/path/to/server-cert.pem"));
}
public void infoHandler(MSSQLConnection connection) {
connection.infoHandler(info -> {
System.out.println("Received info " + info.getSeverity() + "" + info.getMessage());
});
}
}
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