if_not_exist not working for model.save()

[aorlowskiddm]

"cassandra-driver": "^4.7.2", "express-cassandra": "^2.9.0", node v18.16.0

I am trying to conditionally save a record with the IF NOT EXISTS flag:

mapping.save({if_not_exist: true}, (err: any) => {
      if (err) {
        log.error(`Error saving mapping ${err}`)
        throw err
      }

      log.info(`Successfully saved mapping with id ${mapping.mappingId}`)
})

The if_not_exist flag seems to be doing nothing. It overwrites the prior data if it exists. I was able to reproduce this issue with a very simple model:

module.exports = {
  fields: {
    jsonPath: 'text'
  },
  key: ['jsonPath'],
  table_name: 'jsonpaths',
}

[aorlowskiddm]

It was just my misunderstanding of the library. My thought was that if the record previously existed, an error would be given. However, the actual result is that the insert silently fails.

I confirmed that the IF NOT EXISTS was being appended to the query by checking the generated queries by running the node server with the specified command:

DEBUG=express-cassandra npm run dev