hsetnx #
Sets a field and its value in a hash, only if the field does not already exist.
Arguments #
hsetnx(key, [options]);| Arguments | Type | Description |
|---|---|---|
key | string | Key |
options | object | Optional query arguments |
options #
The options arguments can contain the following option properties:
| Property | Type (default) | Description |
|---|---|---|
queuable | boolean (true) | If true, queues the request during downtime, until connected to Kuzzle again |
timeout | number ( -1) | Time (in ms) during which a request will still be waited to be resolved. Set it -1 if you want to wait indefinitely |
triggerEvents | boolean ( false) | If set to true, will trigger events even if using Embeded SDK. You should always ensure that your events/pipes does not create an infinite loop. Available since Kuzzle 2.31.0 |
Resolve #
Usage #
try {
// Prints: true
console.log(await kuzzle.ms.hsetnx('hashfoo', 'foo', 'bar'));
// Prints: false
console.log(await kuzzle.ms.hsetnx('hashfoo', 'foo', 'qux'));
// Prints: bar
console.log(await kuzzle.ms.hget('hashfoo', 'foo'));
} catch (error) {
console.error(error.message);
}