client/io.github.octaviusframework.client.transaction/TransactionValue/FromStep

FromStep

data class FromStep<out T>(val handle: StepHandle<T>) : TransactionValue<T>

An earlier step's result, whole and as its terminal produced it.

T is the terminal's own type: fetchRowStrict gives a Row, fetchRows a List<Row>, fetchObjectStrict<Senator> a Senator. Taking a column, an element or a property out of one is map over that type; what a step can bind is on StepHandle.value.

Constructors

FromStep

constructor(handle: StepHandle<T>)

Properties

handle

val handle: StepHandle<T>

Functions

map

fun <IN, OUT> TransactionValue<IN>.map(transformation: (IN) -> OUT): TransactionValue<OUT>

Applies transformation to this value once it resolves.

spread

fun TransactionValue<Map<String, Any?>>.spread(): SpreadParameters

Marks this map to be spread into parameters of its own rather than assigned to one.