Function: error()

Adds a error message into the Log and displays the message to the user. This function is often used when creating a model and trying to work out why an Expression is not behaving as expected.

The Detail field of the Log Message will contain a list of the current values of any Attributes, Pipes and $-Variables which are relevant in the context of the Expression.

Syntax

error(message)

Examples

This example adds a message to the Log if no rate is found.

ifNull ( in.rate, error("Missing rate") )

This example adds a message to the Log if no rate is found. In this example, an error() message is recorded in the log directly before the processing of records is stopped. This is useful where an error message is required in the logs and the processing must stop.

ifNull(in.rate,
	do(
		error("Missing rate value")
		stop("Processing being stopped")
	)
)

See Also

• Functions