Skip to content
JoltJolt

Conditional logic

Jolt gives you several ways to make decisions in a transformer. For choosing between many cases based on the shape of the data, see pattern matching.

#if

Section titled “#if”

#if takes three parameters: a boolean condition, an expression to evaluate when the condition is true, and an expression to evaluate when it’s false.

{
    "result": "#if(#valueOf($.someValue) > 5, 'Greater than 5', 'Less than or equal to 5')"
}

result is "Greater than 5" when $.someValue is greater than 5, and "Less than or equal to 5" otherwise.

#includeIf

Section titled “#includeIf”

#includeIf sits in a property name. It takes a path or boolean condition, and when it’s true it evaluates and includes the property’s object. Otherwise the property is null.

{
    "#includeIf(#valueOf($.someValue) > 5) into 'result'": {
        "message": "Greater than 5"
    }
}

This includes result with its nested message when $.someValue is greater than 5, and sets result to null otherwise.