Example usage for com.mongodb.client MongoClient getDatabase

Introduction

In this page you can find the example usage for com.mongodb.client MongoClient getDatabase.

Prototype

MongoDatabase getDatabase(String databaseName);

Source Link

Document

Gets a MongoDatabase instance for the given database name.

Usage

From source file:com.creactiviti.piper.config.MongoPersistenceConfiguration.java

License:Apache License

@Bean
MongoDatabase mongoDatabase(MongoClient mongoClient, ConnectionString mongoConnectionString,
        CodecRegistry codecRegistry) {//from w w w  . j  av a 2  s  .co m
    return mongoClient.getDatabase(mongoConnectionString.getDatabase()).withCodecRegistry(codecRegistry);
}

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From source file:documentation.CausalConsistencyExamples.java

License:Apache License

/**
 * Run this main method to see the output of this quick example.
 *
 * @param args takes an optional single argument for the connection string
 *///from w w w.  j a  v  a  2  s  .c om
public static void main(final String[] args) {
    setupDatabase();
    MongoClient client = MongoClients.create();

    // Start Causal Consistency Example 1
    // Example 1: Use a causally consistent session to ensure that the update occurs before the insert.
    ClientSession session1 = client
            .startSession(ClientSessionOptions.builder().causallyConsistent(true).build());
    Date currentDate = new Date();
    MongoCollection<Document> items = client.getDatabase("test").withReadConcern(ReadConcern.MAJORITY)
            .withWriteConcern(WriteConcern.MAJORITY.withWTimeout(1000, TimeUnit.MILLISECONDS))
            .getCollection("test");

    items.updateOne(session1, eq("sku", "111"), set("end", currentDate));

    Document document = new Document("sku", "nuts-111").append("name", "Pecans").append("start", currentDate);
    items.insertOne(session1, document);
    // End Causal Consistency Example 1

    // Start Causal Consistency Example 2
    // Example 2: Advance the cluster time and the operation time to that of the other session to ensure that
    // this client is causally consistent with the other session and read after the two writes.
    ClientSession session2 = client
            .startSession(ClientSessionOptions.builder().causallyConsistent(true).build());
    session2.advanceClusterTime(session1.getClusterTime());
    session2.advanceOperationTime(session1.getOperationTime());

    items = client.getDatabase("test").withReadPreference(ReadPreference.secondary())
            .withReadConcern(ReadConcern.MAJORITY)
            .withWriteConcern(WriteConcern.MAJORITY.withWTimeout(1000, TimeUnit.MILLISECONDS))
            .getCollection("items");

    for (Document item : items.find(session2, eq("end", BsonNull.VALUE))) {
        System.out.println(item);
    }
    // End Causal Consistency Example 2
}

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From source file:documentation.CausalConsistencyExamples.java

License:Apache License

private static void setupDatabase() {
    MongoClient client = MongoClients.create();
    client.getDatabase("test").drop();

    MongoDatabase database = client.getDatabase("test");
    database.getCollection("items").drop();
    MongoCollection<Document> items = database.getCollection("items");

    Document document = new Document("sku", "111").append("name", "Peanuts").append("start", new Date());
    items.insertOne(document);/*from w  w  w . j a  v a 2 s.  c o m*/
    client.close();
}

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From source file:documentation.ChangeStreamSamples.java

License:Apache License

/**
 * Run this main method to see the output of this quick example.
 *
 * @param args takes an optional single argument for the connection string
 *///from ww w.  ja va  2  s  . com
public static void main(final String[] args) {
    MongoClient mongoClient;

    if (args.length == 0) {
        // connect to the local database server
        mongoClient = MongoClients.create("mongodb://localhost:27017,localhost:27018,localhost:27019");
    } else {
        mongoClient = MongoClients.create(args[0]);
    }

    // Select the MongoDB database.
    MongoDatabase database = mongoClient.getDatabase("testChangeStreams");
    database.drop();
    sleep();

    // Select the collection to query.
    MongoCollection<Document> collection = database.getCollection("documents");

    /*
     * Example 1
     * Create a simple change stream against an existing collection.
     */
    System.out.println("1. Initial document from the Change Stream:");

    // Create the change stream cursor.
    MongoChangeStreamCursor<ChangeStreamDocument<Document>> cursor = collection.watch().cursor();

    // Insert a test document into the collection.
    collection.insertOne(Document.parse("{username: 'alice123', name: 'Alice'}"));
    ChangeStreamDocument<Document> next = cursor.next();
    System.out.println(next);
    cursor.close();
    sleep();

    /*
     * Example 2
     * Create a change stream with 'lookup' option enabled.
     * The test document will be returned with a full version of the updated document.
     */
    System.out.println("2. Document from the Change Stream, with lookup enabled:");

    // Create the change stream cursor.
    cursor = collection.watch().fullDocument(FullDocument.UPDATE_LOOKUP).cursor();

    // Update the test document.
    collection.updateOne(Document.parse("{username: 'alice123'}"),
            Document.parse("{$set : { email: 'alice@example.com'}}"));

    // Block until the next result is returned
    next = cursor.next();
    System.out.println(next);
    cursor.close();
    sleep();

    /*
     * Example 3
     * Create a change stream with 'lookup' option using a $match and ($redact or $project) stage.
     */
    System.out.println(
            "3. Document from the Change Stream, with lookup enabled, matching `update` operations only: ");

    // Insert some dummy data.
    collection.insertMany(asList(Document.parse("{updateMe: 1}"), Document.parse("{replaceMe: 1}")));

    // Create $match pipeline stage.
    List<Bson> pipeline = singletonList(
            Aggregates.match(Filters.or(Document.parse("{'fullDocument.username': 'alice123'}"),
                    Filters.in("operationType", asList("update", "replace", "delete")))));

    // Create the change stream cursor with $match.
    cursor = collection.watch(pipeline).fullDocument(FullDocument.UPDATE_LOOKUP).cursor();

    // Forward to the end of the change stream
    next = cursor.tryNext();

    // Update the test document.
    collection.updateOne(Filters.eq("updateMe", 1), Updates.set("updated", true));
    next = cursor.next();
    System.out.println(format("Update operationType: %s %n %s", next.getUpdateDescription(), next));

    // Replace the test document.
    collection.replaceOne(Filters.eq("replaceMe", 1), Document.parse("{replaced: true}"));
    next = cursor.next();
    System.out.println(format("Replace operationType: %s", next));

    // Delete the test document.
    collection.deleteOne(Filters.eq("username", "alice123"));
    next = cursor.next();
    System.out.println(format("Delete operationType: %s", next));
    cursor.close();
    sleep();

    /**
     * Example 4
     * Resume a change stream using a resume token.
     */
    System.out.println("4. Document from the Change Stream including a resume token:");

    // Get the resume token from the last document we saw in the previous change stream cursor.
    BsonDocument resumeToken = cursor.getResumeToken();
    System.out.println(resumeToken);

    // Pass the resume token to the resume after function to continue the change stream cursor.
    cursor = collection.watch().resumeAfter(resumeToken).cursor();

    // Insert a test document.
    collection.insertOne(Document.parse("{test: 'd'}"));

    // Block until the next result is returned
    next = cursor.next();
    System.out.println(next);
    cursor.close();
}

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From source file:tour.ClientSideEncryptionAutoEncryptionSettingsTour.java

License:Apache License

/**
 * Run this main method to see the output of this quick example.
 *
 * Requires the mongodb-crypt library in the class path and mongocryptd on the system path.
 *
 * @param args ignored args/* w w w  . ja  v a 2 s  .com*/
 */
public static void main(final String[] args) {

    // This would have to be the same master key as was used to create the encryption key
    final byte[] localMasterKey = new byte[96];
    new SecureRandom().nextBytes(localMasterKey);

    Map<String, Map<String, Object>> kmsProviders = new HashMap<String, Map<String, Object>>() {
        {
            put("local", new HashMap<String, Object>() {
                {
                    put("key", localMasterKey);
                }
            });
        }
    };

    String keyVaultNamespace = "admin.datakeys";
    ClientEncryptionSettings clientEncryptionSettings = ClientEncryptionSettings.builder()
            .keyVaultMongoClientSettings(MongoClientSettings.builder()
                    .applyConnectionString(new ConnectionString("mongodb://localhost")).build())
            .keyVaultNamespace(keyVaultNamespace).kmsProviders(kmsProviders).build();

    ClientEncryption clientEncryption = ClientEncryptions.create(clientEncryptionSettings);
    BsonBinary dataKeyId = clientEncryption.createDataKey("local", new DataKeyOptions());
    final String base64DataKeyId = Base64.getEncoder().encodeToString(dataKeyId.getData());

    final String dbName = "test";
    final String collName = "coll";
    AutoEncryptionSettings autoEncryptionSettings = AutoEncryptionSettings.builder()
            .keyVaultNamespace(keyVaultNamespace).kmsProviders(kmsProviders)
            .schemaMap(new HashMap<String, BsonDocument>() {
                {
                    put(dbName + "." + collName,
                            // Need a schema that references the new data key
                            BsonDocument.parse("{" + "  properties: {" + "    encryptedField: {"
                                    + "      encrypt: {" + "        keyId: [{" + "          \"$binary\": {"
                                    + "            \"base64\": \"" + base64DataKeyId + "\","
                                    + "            \"subType\": \"04\"" + "          }" + "        }],"
                                    + "        bsonType: \"string\","
                                    + "        algorithm: \"AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic\""
                                    + "      }" + "    }" + "  }," + "  \"bsonType\": \"object\"" + "}"));
                }
            }).build();

    MongoClientSettings clientSettings = MongoClientSettings.builder()
            .autoEncryptionSettings(autoEncryptionSettings).build();

    MongoClient mongoClient = MongoClients.create(clientSettings);
    MongoCollection<Document> collection = mongoClient.getDatabase("test").getCollection("coll");
    collection.drop(); // Clear old data

    collection.insertOne(new Document("encryptedField", "123456789"));

    System.out.println(collection.find().first().toJson());

    // release resources
    mongoClient.close();
}

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From source file:tour.ClientSideEncryptionSimpleTour.java

License:Apache License

/**
 * Run this main method to see the output of this quick example.
 *
 * Requires the mongodb-crypt library in the class path and mongocryptd on the system path.
 * Assumes the schema has already been created in MongoDB.
 *
 * @param args ignored args//from www.jav a2  s  .c  o  m
 */
public static void main(final String[] args) {

    // This would have to be the same master key as was used to create the encryption key
    final byte[] localMasterKey = new byte[96];
    new SecureRandom().nextBytes(localMasterKey);

    Map<String, Map<String, Object>> kmsProviders = new HashMap<String, Map<String, Object>>() {
        {
            put("local", new HashMap<String, Object>() {
                {
                    put("key", localMasterKey);
                }
            });
        }
    };

    String keyVaultNamespace = "admin.datakeys";

    AutoEncryptionSettings autoEncryptionSettings = AutoEncryptionSettings.builder()
            .keyVaultNamespace(keyVaultNamespace).kmsProviders(kmsProviders).build();

    MongoClientSettings clientSettings = MongoClientSettings.builder()
            .autoEncryptionSettings(autoEncryptionSettings).build();

    MongoClient mongoClient = MongoClients.create(clientSettings);
    MongoCollection<Document> collection = mongoClient.getDatabase("test").getCollection("coll");
    collection.drop(); // Clear old data

    collection.insertOne(new Document("encryptedField", "123456789"));

    System.out.println(collection.find().first().toJson());

    // release resources
    mongoClient.close();
}

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From source file:tour.PojoQuickTour.java

License:Apache License

/**
 * Run this main method to see the output of this quick example.
 *
 * @param args takes an optional single argument for the connection string
 *//*  w w w.j a  v a 2s  .  co  m*/
public static void main(final String[] args) {
    MongoClient mongoClient;

    if (args.length == 0) {
        // connect to the local database server
        mongoClient = MongoClients.create();
    } else {
        mongoClient = MongoClients.create(args[0]);
    }

    // create codec registry for POJOs
    CodecRegistry pojoCodecRegistry = fromRegistries(MongoClientSettings.getDefaultCodecRegistry(),
            fromProviders(PojoCodecProvider.builder().automatic(true).build()));

    // get handle to "mydb" database
    MongoDatabase database = mongoClient.getDatabase("mydb").withCodecRegistry(pojoCodecRegistry);

    // get a handle to the "people" collection
    MongoCollection<Person> collection = database.getCollection("people", Person.class);

    // drop all the data in it
    collection.drop();

    // make a document and insert it
    Person ada = new Person("Ada Byron", 20, new Address("St James Square", "London", "W1"));
    System.out.println("Original Person Model: " + ada);
    collection.insertOne(ada);

    // Person will now have an ObjectId
    System.out.println("Mutated Person Model: " + ada);

    // get it (since it's the only one in there since we dropped the rest earlier on)
    Person somebody = collection.find().first();
    System.out.println(somebody);

    // now, lets add some more people so we can explore queries and cursors
    List<Person> people = asList(
            new Person("Charles Babbage", 45, new Address("5 Devonshire Street", "London", "W11")),
            new Person("Alan Turing", 28, new Address("Bletchley Hall", "Bletchley Park", "MK12")),
            new Person("Timothy Berners-Lee", 61, new Address("Colehill", "Wimborne", null)));

    collection.insertMany(people);
    System.out.println("total # of people " + collection.countDocuments());

    System.out.println("");
    // lets get all the documents in the collection and print them out
    Block<Person> printBlock = new Block<Person>() {
        @Override
        public void apply(final Person person) {
            System.out.println(person);
        }
    };

    collection.find().forEach(printBlock);

    System.out.println("");
    // now use a query to get 1 document out
    somebody = collection.find(eq("address.city", "Wimborne")).first();
    System.out.println(somebody);

    System.out.println("");
    // now lets find every over 30
    collection.find(gt("age", 30)).forEach(printBlock);

    System.out.println("");
    // Update One
    collection.updateOne(eq("name", "Ada Byron"), combine(set("age", 23), set("name", "Ada Lovelace")));

    System.out.println("");
    // Update Many
    UpdateResult updateResult = collection.updateMany(not(eq("zip", null)), set("zip", null));
    System.out.println(updateResult.getModifiedCount());

    System.out.println("");
    // Replace One
    updateResult = collection.replaceOne(eq("name", "Ada Lovelace"), ada);
    System.out.println(updateResult.getModifiedCount());

    // Delete One
    collection.deleteOne(eq("address.city", "Wimborne"));

    // Delete Many
    DeleteResult deleteResult = collection.deleteMany(eq("address.city", "London"));
    System.out.println(deleteResult.getDeletedCount());

    // Clean up
    database.drop();

    // release resources
    mongoClient.close();
}

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