Building Expressions

Expressions are JSON like objects which process and return a specific calculated output at the runtime. An expressions object looks like -

Syntax

{
    <operator>: <value>
}

Properties

Field	Description	Required
<operator>	A CQL expression operator which defines what type of computation has to be done in this expression. You can check the list of CQL expression operators here.	true
<value>	A list or dict of arguments required for the corresponding CQL operator.	true

Restrictions

You can have at most 1 CQL operator per expression object.

Examples

{
    "$add": [1,2,3]
}

The above expression will return 6 when used in any node that supports Expressions.

List of Expression Operators available in CQL

• $abs

• $add

• $addDate

• $arrayElemAt

• $avg

• $buildDateTime

• $ceil

• $cond

• $divide

• $floor

• $ifNull

• $max

• $min

• $mod

• $multiply

• $pow

• $subtract

• $sqrt