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Formula - Count

Easily count unique values from your data using the count Formula in Nodinite. This page provides clear, real-world examples with a new, easy-to-read layout that separates input, formula, and result.

✅ Instantly count unique values from message body, Context, or nested formulas ✅ Use with XML, JSON, or plain text data ✅ Boost your integration insights with unique, reliable results

🎯 Design Note: The count() function returns the number of unique values extracted from your data.

What does the count formula do?

The count() formula returns the number of unique values extracted from your data. Use it to analyze message payloads, context values, or results from other formulas in your log views and search fields.

graph LR A["Input: Values"] --> B["count()"] B --> C["Result: Count"]

Examples

Below are practical examples showing exactly what input is used, the formula expression, and the resulting output.

Example 1: XML Message Body

Input 

<ns0:Orders xmlns:ns0="SupplyChain.Schemas/1.0">
  <Order>
    <Id>1337</Id>
    <Amount>666</Amount>
    <City>New York</City>
    <Partner>QWNtZQ==</Partner>
  </Order>
  <Order>
    <Id>1338</Id>
    <Amount>42</Amount>
    <City>Paris</City>
    <Partner>QWNtZQ==</Partner>
  </Order>
</ns0:Orders>

Formula Expression 

count(xpath('Orders/Order/Id', body))

Result 

2

Example 2: Plain Text Body

Input 

Nodinite

Formula Expression 

count(body)

Result 

1

simpleBody

The result is 1 because the message body contains a single value.

Example 3: Message Context Value

Input 

Nodinite

Formula Expression 

count(context('id'))

Result 

1

messageContext

The result is 1 because the context value for 'id' is a single value.

Example 4: JSON with Nested Formula

Input 

{"a":[{"b":"This"},{"b":"is"},{"b":"Formula Plugin"}]}

Formula Expression 

count(jsonpath('a[*].b', body))

Result 

3

jsonpath

The result is 3 because there are three unique values in the JSON array.

Features

  • Count unique values from any Content
  • Works with XML, JSON, plain text, or any valid formula plugin
  • Returns the count of unique values only
  • Ideal for integration analytics and data validation in Nodinite

Important

This plugin loads the entire message into RAM. For best performance, use it only on small messages.

How to use the count formula

Syntax

  • From Message Body: count(body)
  • From Message Context: count(context('MessageContextKey'))
  • From Nested Formula: count(SomeOtherFormula(Content))

Next step