Examples of com.mongodb.BulkWriteOperation

com.mongodb.BulkWriteOperation
A bulk write operation. A bulk write operation consists of an ordered or unordered collection of write requests, which can be any combination of inserts, updates, replaces, or removes. @see DBCollection#initializeOrderedBulkOperation() @see com.mongodb.DBCollection#initializeUnorderedBulkOperation() @mongodb.server.release 2.6 @mongodb.driver.manual /reference/command/delete/ Delete @mongodb.driver.manual /reference/command/update/ Update @mongodb.driver.manual /reference/command/insert/ Insert @since 2.12

        final AtomicBoolean cancelCondition = new AtomicBoolean();


        List<ObjectId> ids = Lists.newArrayListWithCapacity(bulkSize);
        List<Future<?>> runningTasks = new ArrayList<Future<?>>(maxRunningTasks);


        BulkWriteOperation bulkOperation = collection.initializeOrderedBulkOperation();
        try {
            while (objects.hasNext()) {
                RevObject object = objects.next();
                bulkOperation.insert(toDocument(object));


                ids.add(object.getId());


                if (ids.size() == bulkSize || !objects.hasNext()) {
                    InsertTask task = new InsertTask(bulkOperation, listener, ids, cancelCondition);

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        // Count all documents in a collection but take a maximum second to do so
        coll.find().maxTime(1, SECONDS).count();


        // Bulk operations
        BulkWriteOperation builder = coll.initializeOrderedBulkOperation();
        builder.insert(new BasicDBObject("_id", 1));
        builder.insert(new BasicDBObject("_id", 2));
        builder.insert(new BasicDBObject("_id", 3));


        builder.find(new BasicDBObject("_id", 1)).updateOne(new BasicDBObject("$set", new BasicDBObject("x", 2)));
        builder.find(new BasicDBObject("_id", 2)).removeOne();
        builder.find(new BasicDBObject("_id", 3)).replaceOne(new BasicDBObject("_id", 3).append("x", 4));


        BulkWriteResult result = builder.execute();
        System.out.println("Ordered bulk write result : " + result);


        // Unordered bulk operation - no guarantee of order of operation
        builder = coll.initializeUnorderedBulkOperation();
        builder.find(new BasicDBObject("_id", 1)).removeOne();
        builder.find(new BasicDBObject("_id", 2)).removeOne();


        result = builder.execute();
        System.out.println("Ordered bulk write result : " + result);


        // parallelScan
        ParallelScanOptions parallelScanOptions = ParallelScanOptions
                .builder()

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    private <T> Iterable<Key<T>> insert(final DBCollection dbColl, final Iterable<T> entities, final WriteConcern wc) {
        WriteConcern writeConcern = wc;
        final List<Key<T>> savedKeys = new ArrayList<Key<T>>();
        if (morphia.getUseBulkWriteOperations()) {
            BulkWriteOperation bulkWriteOperation = dbColl.initializeOrderedBulkOperation();
            final Map<Object, DBObject> involvedObjects = new LinkedHashMap<Object, DBObject>();
            for (final T entity : entities) {
                if (writeConcern == null) {
                    writeConcern = getWriteConcern(entity);
                }
                DBObject dbObj = toDbObject(entity, involvedObjects);
                bulkWriteOperation.insert(dbObj);
                savedKeys.add(postSaveGetKey(entity, dbObj, dbColl, new LinkedHashMap<Object, DBObject>()));
            }
            bulkWriteOperation.execute(writeConcern);
            postSaveOperations(involvedObjects);


        } else {
            writeConcern = getWriteConcern(entities.iterator().next());
            final List<DBObject> list = new ArrayList<DBObject>();

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