Function trim

  • Removes all list elements that are not within the specified range.

    Parameters

    • bin: string

      The name of the bin. The bin must contain a List value.

    • index: number

      Index of the first element in the range.

    • count: number

      Number of elements in the range.

    Returns ListOperation

    Operation that can be passed to the Client#operate command.

    This operation returns the number of list elements removed.

    const Aerospike = require('aerospike')
    const lists = Aerospike.lists
    const key = new Aerospike.Key('test', 'demo', 'mykey1')
    // 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: {
    read : new Aerospike.ReadPolicy({socketTimeout : 0, totalTimeout : 0}),
    write : new Aerospike.WritePolicy({socketTimeout : 0, totalTimeout : 0}),
    operate : new Aerospike.OperatePolicy({socketTimeout : 0, totalTimeout : 0})
    }
    }
    var ops = [
    lists.trim('tags', 1, 1)
    ]

    Aerospike.client(config).connect((error, client) => {
    if (error) throw error
    client.put(key, { tags: ['blue', 'yellow', 'pink'] }, (error) => {
    if (error) throw error
    client.operate(key, ops, (error) => {
    if (error) throw error
    client.get(key, (error, record) => {
    if (error) throw error
    console.log(record.bins.tags) // => { ['yellow'] }
    client.close()
    })
    })
    })
    })
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