Combine
Combines multiple input streams and emits a combined result on any incoming event using the latest values from each connected input.
In-ports
p1 … pN <any> — dynamic data inputs; the number of inputs is defined by Port count.
Out-ports
array Array — combined values in port order.
object Object — combined values keyed by port labels (or port names when labels are not set).
meta Object — metadata for each emission: request, isFlush (always true), attributes, and per-port stat (bufferedEventsCount, bufferedSignalsCount, state, and original port name).
Overview
The Combine operator maintains the latest value per connected input and emits a combined result whenever any input receives a new event. Emission starts only after all connected ports have received at least one value.
To reset the values on any input port, send a RESET signal to that port.
The Combine operator combines values exclusively from active ports, which are input ports with connected streams. For instance, if only one input port is activated, the Combine operator will immediately output the incoming value on that port.
Settings
Port count (portCount)
Defines how many dynamic input ports (p1 … pN) are available.
- Required: Yes
- Default:
2