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$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 shows 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()