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
What is the count formula?
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.
Syntax
- From Message Body:
count(body) - From Message Context:
count(context('MessageContextKey')) - From Nested Formula:
count(SomeOtherFormula(Content))
Examples: Input, Formula, and Result
Below are practical examples showing exactly what input is used, the formula expression, and the resulting output.
Example 1: XML Message Body
Input from Body
<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
count(xpath('Orders/Order/Id', body))
Result
2
Example 2: Plain Text Body
Input
Nodinite
Formula
count(body)
Result
1
The result is 1 because the message body contains a single value.
Example 3: Message Context Value
Input
Nodinite
Formula
count(context('id'))
Result
1
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
count(jsonpath('a[*].b', body))
Result
3
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.
Next Steps
Related Topics
- Expression Type Plugins are used in Search Fields
- What are Search Fields?
- What are Search Field Expressions?
- What are Message Types?
- What are Log Views?