aerospike/examples/pathExpressions.js

Aerospike Client Library

#!/usr/bin/env node
// *****************************************************************************
// Copyright 2025 Aerospike, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License")
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// *****************************************************************************
//
const Aerospike = require('aerospike')
const shared = require('./shared')

const Context = Aerospike.cdt.Context

shared.runner()

async function pathExpressions (client, argv) {
  const key = new Aerospike.Key(argv.namespace, argv.set, argv.key)

  const bins = {
    floatList: [2.4, 4.8, 7.2]
  }

  if (!argv.multiplier) {
    argv.multiplier = 0.5
  }
  await client.put(key, bins)

  const addAllChildren = new Context().addAllChildren()

  const modExpression = Aerospike.exp.mul(Aerospike.exp.loopVarFloat(Aerospike.exp.loopVarPart.VALUE), Aerospike.exp.float(argv.multiplier))

  const modifyByPath = Aerospike.exp.modifyByPath(Aerospike.exp.binList('floatList'), Aerospike.exp.type.LIST, modExpression, Aerospike.exp.pathModifyFlags.DEFAULT, addAllChildren)

  const ops = [
    Aerospike.exp.operations.write('floatList', modifyByPath, Aerospike.exp.expWriteFlags.DEFAULT)
  ]

  await client.operate(key, ops)

  const result = await client.get(key)

  console.log(result.bins) // { floatList: [ 8.88, 17.76, 26.64 ] }

  await client.close()
}

exports.command = 'pathExpressions <key> <multiplier>'
exports.describe = 'Path Expressions'
exports.handler = shared.run(pathExpressions)
exports.builder = {}