Functions

Enrichment includes an extensive set of functions that allow you to manipulate data from your inputs and return the result as a variable value. Enrichment also allows calls to user-written functions.

There are four types of functions: logical, string, numeric, and command.

• Logical functions return TRUE (1) or FALSE (0).
• String functions return a string of characters.
• Numeric functions return a numeric value.
• Command functions are used to reference Enrichment functions that do not return a value. The following example shows the WRITE function which returns no value:

  WRITE(DD:EXCEPTIO, %%RECORD, F, 132)

  For compatibility with previous releases of EnrichmentEnrichment, function statements can also be referenced in a set statement. For example:

  %%X = WRITE(DD:EXCEPTIO, %%RECORD, F, 132)

  The variable on the left side is set to a null string.

The most commonly used functions include:

• CHANGED indicates whether a variable value has changed from the previous document to the current one.
• FOUND indicates whether a particular field was found in the document during Enrichment processing.
• JUSTIFY returns a string aligned within a specified number of characters.
• LOOKUP returns the record that satisfied the lookup criteria.
• SUBSTR returns a portion of a string.