REL Expressions

REL (Redwood Expression Language) is a Java-based language which can be used to implement complex functionality. Redwood Finance Automation provides a variety of pre-implemented REL expressions which can be used within any Redwood Finance Automation scenario.

note

To use the REL functions appropriately, they must be prefixed with the library name (<partition>.<library_name>). For example you would use =FCA.Redwood_FCA.getCurrentUser(chainJobId) to get the user that submitted the process, using the standard Redwood Finance Automation library FCA.Redwood_FCA. If the definition is in the same partition as the library, you can specify $ instead of the partition name, such as =$.Redwood_FCA.getCurrentUser(chainJobId).

REL is a simple expression language that supports basic arithmetic and comparison operators, and some predefined functions.

You can create your own functions for use in REL and RedwoodScript using a library with REL entry points.

The REL can be used to specify:

• Definition parameter default values
• Definition return code mappings
• Step preconditions
• Call preconditions
• Parameter mappings
• Scheduling parameter mappings
• Event raiser comments *...

Syntax

Fields that accept REL expressions

Operators

Redwood Expression Language provides support for the basic arithmetic operators:

• + - addition and string concatenation
• - - subtraction
• * - multiplication
• / - division
• % - integer modulus
• && - logical AND
• || - logical OR
• ! - NOT

It also supports comparison:

• === - equal to
• !== - not equal to
• > - greater than
• >= - greater than or equal

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