trait FlowFunction extends Logging
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- abstract def call(allInputs: Set[TableIdentifier], availableInputs: Seq[Input], configuration: Map[String, String], queryContext: QueryContext, queryOrigin: QueryOrigin): FlowFunctionResult
This function defines the transformations performed by a flow, expressed as a DataFrame.
This function defines the transformations performed by a flow, expressed as a DataFrame.
- allInputs
the set of identifiers for all the Inputs defined in the DataflowGraph.
- availableInputs
the list of all Inputs available to this flow
- configuration
the spark configurations that apply to this flow.
- queryContext
The context of the query being evaluated.
- queryOrigin
The source code location of the flow definition this flow function was instantiated from.
- returns
the inputs actually used, and the DataFrame expression for the flow
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(Since version 9)