Services or capabilities described in AWS documentation might vary by Region. To see the differences applicable to the AWS European Sovereign Cloud Region, see the AWS European Sovereign Cloud User Guide.$bitNot
New from version 8.0.1.
The $bitNot operator in Amazon DocumentDB performs a bitwise NOT operation on an integer or long value, returning the bitwise complement. For a given integer or long n, the result is -(n+1).
Parameters
Example (MongoDB Shell)
The following example demonstrates how to use the $bitNot operator to compute the bitwise complement of integer values.
Create sample documents
db.numbers.insertMany([
{_id: 1, value: 0},
{_id: 2, value: 5},
{_id: 3, value: -3}
]);
Query example
db.numbers.aggregate([
{ $project: { result: { $bitNot: "$value" } } }
]);
Output
[
{_id: 1, result: -1},
{_id: 2, result: -6},
{_id: 3, result: 2}
]
In binary: NOT 0 = -1; NOT 5 = -6; NOT -3 = 2.
Code examples
To view a code example for using the $bitNot operator, choose the tab for the language that you want to use:
- Node.js
-
const { MongoClient } = require('mongodb');
async function example() {
const client = new MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false');
try {
await client.connect();
const db = client.db('test');
const collection = db.collection('numbers');
const result = await collection.aggregate([
{ $project: { result: { $bitNot: "$value" } } }
]).toArray();
console.log(result);
} finally {
await client.close();
}
}
example();
- Python
-
from pymongo import MongoClient
def example():
client = MongoClient('mongodb://<username>:<password>@<cluster-endpoint>:27017/?tls=true&tlsCAFile=global-bundle.pem&replicaSet=rs0&readPreference=secondaryPreferred&retryWrites=false')
try:
db = client['test']
collection = db['numbers']
result = list(collection.aggregate([
{'$project': {'result': {'$bitNot': '$value'}}}
]))
print(result)
finally:
client.close()
example()