Transformer

transformer(

input_tables: TableInput | str | List[str],

output_tables: TableOutput | str | List[str],

name: str = None,

trigger_by: TransformerTriggerBySpec = '*',

on_output_tables: OnTablesSpec = None,

) → callable

Categories:

transformer

Decorator to define a function to transform data present in Tabsdata.

Parameters:

• input_tables (TableInput | str | List[str]) – Where to obtain the data that will be provided as an input to the function.

• output_tables (TableOutput | str | List[str]) – Where to store the output of the function.

• name (str, optional) – The name with which the function will be registered. If not provided, the current function name will be used.

• trigger_by (TransformerTriggerBySpec, optional) – The trigger that will cause the function to execute. It can be a table in the system, a list of tables, None (in which case it must be triggered manually), or a CronTrigger. Defaults to all dependencies.

• on_output_tables (OnTablesSpec, optional) – Actions to perform on output tables after executing the function. Can be a single action or a list of them. Defaults to None.

Returns:

The function converted to a Tabsdata Function.

Return type:

callable