Example usage for com.mongodb ClientSessionOptions builder

Introduction

In this page you can find the example usage for com.mongodb ClientSessionOptions builder.

Prototype

public static Builder builder() 

Source Link

Document

Gets an instance of a builder

Usage

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
 *///w  w w  . j av  a 2s.co  m
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:org.restheart.db.sessions.ClientSessionFactory.java

License:Open Source License

/**
 *
 * @param sid//  ww  w. j  a v a2s.c om
 * @return
 */
public ClientSessionImpl getClientSession(UUID sid) {
    var options = Sid.getSessionOptions(sid);

    ClientSessionOptions cso = ClientSessionOptions.builder().causallyConsistent(options.isCausallyConsistent())
            .build();

    return createClientSession(sid, cso, mClient.getReadConcern(), mClient.getWriteConcern(),
            mClient.getReadPreference());
}

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