Official |[Mapper]Check Null

Logic name

Check Null (Document Mapper/Variable Mapper)

Function

This logic determines whether the input value is null.

Data types

Location	Type
First input handler	Data (including null)
Logic output	Boolean

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For details, refer to Logic specifications (Document Mapper/Variable Mapper).

Properties

Category	Property	Description
Comment	Comment	You can write a description of the logic. It doesn't affect the conversion process.

Logic sample

Mapping definition

Logic settings and processing result

This logic returns "true" if the value is a null value. If not, it returns "false".

Property settings

Property	Setting
None

Input data

a

(Null)
*The data is null.

(Space)
*The data is a single-byte space.

Output data

false

true

false

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For a list of logics, refer to Mapper Logic Guide.