Mitchell.Hirsche: Mitchell.Hirsche moved page Documentation for the While Loop Node in Pathways to While Loop Node in Pathways

2025-03-05T23:08:35Z

Mitchell.Hirsche moved page Documentation for the While Loop Node in Pathways to While Loop Node in Pathways

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Revision as of 23:08, 5 March 2025

Mitchell.Hirsche: While Loop Node

2025-03-05T00:19:22Z

While Loop Node

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The '''While Loop''' node in Pathways is used to repeatedly execute a sequence of tasks while a specified condition remains true. This is particularly useful for iterative processes or workflows that require continuous execution until a logical condition is no longer satisfied.
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==== '''Configuration Options''' ====

# '''Name'''
#* '''Description''': A descriptive label for the While Loop node to easily identify its purpose in the workflow.
#* '''Input''': Text field.
#* '''Example''': "Validate Data Input Loop".
# '''Condition'''
#* '''Description''': The logical condition that determines whether the loop continues to execute. The loop will run as long as this condition evaluates to true.
#* '''Input Type''': Dropdown with two options for defining the condition:
#** '''Script''': Allows the user to define a condition using custom script logic for complex evaluations.
#** '''Handlebars Template''': Enables the use of Handlebars expressions for simple, template-driven logic.
#* '''Required''': Yes.
#* '''Example''':
#** Script: data.value < 100
#** Handlebars Template: <nowiki>{{data.isValid}}</nowiki>.

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==== '''How It Works''' ====

* The node evaluates the '''Condition''' before every iteration.
* If the condition is true:
** Executes the sequence of tasks defined in the loop.
** Rechecks the condition after execution.
* If the condition is false:
** The loop stops, and the workflow continues to the next step.

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==== '''Practical Example''' ====
Suppose you want to monitor a data stream until a specific value exceeds a threshold:

# Configure the '''Condition''' as data.temperature < 75.
# Inside the loop, define tasks such as logging the current temperature and sending alerts if required.
# Once the temperature reaches 75 or higher, the loop stops, and the workflow proceeds.

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==== '''Notes''' ====

* Ensure the condition is well-defined to avoid infinite loops.
* Use appropriate error handling or exit strategies if the condition might result in extended iterations.
* Combine with nodes like '''Break''' to programmatically exit the loop under specific scenarios.

----This node is a flexible tool to add iterative functionality to your Pathways workflow, enabling dynamic and responsive execution paths.
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While Loop Node in Pathways - Revision history

Mitchell.Hirsche: Mitchell.Hirsche moved page Documentation for the While Loop Node in Pathways to While Loop Node in Pathways

Mitchell.Hirsche: While Loop Node