Each

Overview

The Each Component iterates over a list and outputs a new message for each item. It allows processing list elements individually, enabling sequential execution of subsequent actions.

Usage

Input Parameters

Parameter	Type	Description
list	array / string	The list to iterate over. If a string is provided, it must be a valid JSON array.

Input Ports

Port	Description
in	Receives the list to iterate over.

Output Ports

Port	Description
item	Emits each item from the list with additional metadata.
done	Fires after all items have been processed, providing the total count and correlation ID.

Output Data for item Port

Field	Description
index	The index of the current item in the list.
value	The value of the current item.
count	Total number of items in the list.
correlationId	Unique identifier for tracking batch processing.

Output Data for done Port

Field	Description
count	The total number of processed items.
correlationId	Unique identifier for tracking batch execution.

Instructions

1. Provide a List

   • Ensure the input list is an array or a valid JSON string representing an array.

2. Processing Items

   • Each item in the list is sent separately to the item port.

   • The done port is triggered after all items are processed.

3. Handling Index and Correlation ID

   • Each item is assigned an index and a correlationId to track processing.

Notes

• Supports JSON Parsing: If list is a string, it will attempt to parse it as JSON.

• State Persistence: Keeps track of progress and resumes processing if interrupted.

• Efficient for Iteration: Useful for batch processing workflows requiring individual handling of list elements.