Formula - startswith

startswith

The core functionality of startswith( ) is to check if text(string) starts with a specific letter or word. the result is true if it matches otherwise return nothing.

Quick example

Let's get you started with the following example: For other, and more advanced examples please scroll down on this page to the Examples section.

  GMT

startswith('G',body)

Syntax

On the Message Body :

startswith('Expression',body)

On the Message Context :

startswith('Expression',context('MessageContextKey'))

Features

• Check matching case at the beginning of a given text.
• Return unique single true value only from Content if the matches occurred.
• Can be applied to any valid Content that return text; Like jsonpath, xpath functions, review Formula user guide for the complete list of functions.

Important

This plugin loads the entire message into RAM, so make sure to apply this function only on small messages..

How to use

To use the startswith function, the Content parameter should contain a text/string (otherwise it will fail and you will end up with a garbage result). But first and foremost we have to configure the Formula plugin:

• Select Formula as the expression type plugin.
• Write down the expression to use in the 'Expression' text area.
• Input proper Content as a parameter to the function.

Syntax

Use the startswith function with any of the following parameters:

• From Message Body: startswith(body)

• From Message Context: startswith(context('MessageContextKey'))

• Result from previous Formula operation startswith(SomeOtherNestedFormulaFunction(Content))

Examples

Below you will find different common examples of how to use the startswith function.

Body as Content

The message body is "GMT" normal text, by using the provided expression, the result is true.

e.g. startswith('G',body)

Message Body

  GMT

Expression

startswith('G',body)

Context as Content

Example: The message context value for the corresponding key "id" is "GMT", by using the provided expression, the result is true. e.g. startswith('G',context('id'))

Message Context Value

  GMT

Expression

startswith('G',context('id'))

Formula Function as Content

Regex function used as content parameter of startswith function, by using the provided expression, the result is true.

e.g. startswith('U,regex('GMT|UTC',body))

Message Body

 GMT UTC

Expression

startswith('U,regex('GMT|UTC',body))

Next Step

How to Add or manage Search Fields
How to Add or manage Log Views

Related

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?