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.$toUUID
New from version 8.0.1.
The $toUUID operator in Amazon DocumentDB converts a string value to a UUID (Binary subtype 4).
Parameters
Example (MongoDB Shell)
The following example demonstrates how to use the $toUUID operator to convert string values to UUID format.
Create sample documents
db.records.insertMany([
{_id: 1, uuidStr: "550e8400-e29b-41d4-a716-446655440000"},
{_id: 2, uuidStr: "6ba7b810-9dad-11d1-80b4-00c04fd430c8"}
]);
Query example
db.records.aggregate([
{ $project: { uuid: { $toUUID: "$uuidStr" } } }
]);
Output
[
{_id: 1, uuid: UUID("550e8400-e29b-41d4-a716-446655440000")},
{_id: 2, uuid: UUID("6ba7b810-9dad-11d1-80b4-00c04fd430c8")}
]
Code examples
To view a code example for using the $toUUID 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('records');
const result = await collection.aggregate([
{ $project: { uuid: { $toUUID: "$uuidStr" } } }
]).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['records']
result = list(collection.aggregate([
{'$project': {'uuid': {'$toUUID': '$uuidStr'}}}
]))
print(result)
finally:
client.close()
example()