Data Transformation Engine Functions and Expressions Reference Guide

Chapter 1 - Expressions and Evaluations Data Object Names

Functions and Expressions Reference Guide

Comment Object Name

A comment name can be either an in-comment name or an @-comment name.

♦ An in-comment name references all comment objects within a specified object.

An in-comment name is specified as a component-path, a space, the reserved

word IN, followed by another space, followed by the component path of the

component on which the floating component type is defined. For example,

given the data structure shown below, to reference all INPUT Parameters for

a particular Input, regardless of whether they followed Method OpenFile or

Method GetEntry, the object name would be INPUT Parameters IN Input.

♦ An @-comment name references all comment objects that follow immediately

after a specified object. An @-comment name is specified as the component

path of the comment, followed by the reserved symbol "@", followed by the

component path of the component that follows the comment. For example, to

reference only the INPUT Parameters that follow immediately after the

Method OpenFile (and before Method GetEntry), the object name would be

INPUT Parameters @ Method OpenFile:Input.

Shorthand Notation

In a rule, a dollar sign ($) can be used to refer to the object to the left of the rule

cell. In the Type Designer, the $ sign refers to the object you are qualifying. In the

Map Designer, the $ refers to the object to which the rule evaluates.

In certain cases, you can also use a period between colons to shorten the

reference to a data object name. The Use Ellipses command can be used to

automatically shorten data object names you drag into rule expressions.