System Connector Properties¶
Unless otherwise noted, these properties may be used when configuring nodes for any data source or sink in the system category.
In JSON node files, these fields may be used to configure the source or sink generally or used to configure specific keys (steps) within a source or sink.
Dictionary is the only system connector. See Dictionary for properties specific to the connector.
Note
Source/sink names are auto-generated. The system generates the default names, "source" and "sink," upon creation of a DataMapper node, as well as the default folders, "data_sources" and "data_sinks." Other elements inherit those names: the file generated within the node's data_sources folder is source.json, the file in the node's data_sinks folder is sink.json, and mapping keys are mappingname_source and mappingname_sink. Any name changes must be updated in the node's notebook.json and in the source and sink files.
Access system properties¶
System source and sink mapping/step properties can be found in the Mappings tab of the Node Editor and in the JSON file of the File Editor.
System connector source properties¶
The following properties can be used when connecting to a source.
| Mapping/step field in the UI | Mapping/step field in JSON | Description and details |
|---|---|---|
| JSON Value | VALUE | The source data to be mapped. If the sink is file-based, everything in this field is written to the sink file. Availability: Dictionary data source only. Value type: Valid JSON Node file: Recorded in /data_sources/source.json |
System connector sink properties¶
The following properties can be used when connecting to a sink.
| Mapping field in the UI | Mapping field in JSON | Description and details |
|---|---|---|
| Target Variable | variable | The sink runtime variable to which the data from the source will be mapped. If the source is file-based, the contents of the source file would be assigned to this variable. The variable can then be used in downstream nodes through {{}} syntax. Availability: Dictionary data sink only. Value type: string Node file: Recorded in /data_sinks/sink.json |