aerospike/test/exp_hll.js

Aerospike Client Library

// *****************************************************************************
// Copyright 2022-2023 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.
// *****************************************************************************

'use strict'

/* eslint-env mocha */
/* global expect */

const Aerospike = require('../lib/aerospike')
const exp = Aerospike.exp
const op = Aerospike.operations
const hll = Aerospike.hll

const helper = require('./test_helper')
const keygen = helper.keygen
const tempBin = 'ExpVar'

describe('Aerospike.exp_operations', function () {
  helper.skipUnlessVersion('>= 5.0.0', this)

  const client = helper.client

  async function createRecord (bins, meta = null) {
    const key = keygen.string(helper.namespace, helper.set, { prefix: 'test/exp' })()
    await client.put(key, bins, meta)
    return key
  }

  it('builds up a filter expression value', function () {
    const filter = exp.eq(exp.binInt('intVal'), exp.int(42))
    expect(filter).to.be.an('array')
  })

  describe('hll expressions', function () {
    describe('hll bin getCount expression', function () {
      it('evaluates exp_read op to true if temp bin equals to unique items in hll', async function () {
        const key = await createRecord({
          hllCats: Buffer.from([0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0,
            0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 65, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]),
          list: ['tiger']
        })
        const ops = [
          hll.add('hllCats2', ['jaguar', 'tiger', 'tiger', 'leopard', 'lion', 'jaguar'], 8),
          exp.operations.read(tempBin,
            exp.hll.getCount(exp.binHll('hllCats2')),
            0),
          op.read('hllCats2')
        ]
        const result = await client.operate(key, ops, {})
        // console.log(result)
        expect(result.bins.ExpVar).to.eql(4)
      })
    })
  })
})