key property

String key
final

The key of the dataset contents object in an S3 bucket. Each object has a key that is a unique identifier. Each object has exactly one key.

You can create a unique key with the following options:

  • Use !{iotanalytics:scheduleTime} to insert the time of a scheduled SQL query run.
  • Use !{iotanalytics:versionId} to insert a unique hash that identifies a dataset content.
  • Use !{iotanalytics:creationTime} to insert the creation time of a dataset content.
The following example creates a unique key for a CSV file: dataset/mydataset/!{iotanalytics:scheduleTime}/!{iotanalytics:versionId}.csv

Implementation

final String key;