The name of the bin, which must contain a Map value.
Find map items nearest to this key and greater.
Index of items to be retrieved relative to the given key.
Optionalcount: numberNumber of items to retrieve. If undefined, the range includes all items nearest to key and greater, until the end.
OptionalreturnType: maps.returnTypeThe return type indicating what data of the selected item(s) to return.
Operation that can be passed to the Client#operate command.
This operation returns the selected data specified by
returnType.
Examples for map { a: 17, e: 2, f: 15, j: 10 }:
Without count:
Requires Aerospike Server v4.3.0 or later.
Instead of passing returnType, you can also use
~MapOperation#andReturn|MapOperation#andReturn to
select what data to return.
const Aerospike = require('aerospike')
const maps = Aerospike.maps
const key = new Aerospike.Key('test', 'demo', 'mapKey')
// INSERT HOSTNAME AND PORT NUMBER OF AEROSPIKE SERVER NODE HERE!
var config = {
hosts: '192.168.33.10:3000',
// Timeouts disabled, latency dependent on server location. Configure as needed.
policies: {
write : new Aerospike.WritePolicy({socketTimeout : 0, totalTimeout : 0}),
operate : new Aerospike.OperatePolicy({socketTimeout : 0, totalTimeout : 0})
}
}
Aerospike.connect(config)
.then(async client => {
await client.put(key, { map: { a: 17, e: 2, f: 15, j: 10 } })
let result = await client.operate(key, [
maps.getByKeyRelIndexRange('map', 'b', 2, 1)
.andReturn(maps.returnType.KEY_VALUE)])
console.info(result.bins.map) // => [ 'j', 10 ]
client.close()
})
Retrieves map items nearest to key and greater, by index, from the map.