Expressions

Expression types define the computational power of BRFplus. Each expression type defines a self-contained computational unit with a well-defined logic. Expressions use a context or nest other expressions to calculate, determine, or derive a result. An expression can be considered to be an instance of an expression type behaving according to the expression type's logic. An expression can be reused as a nested building block for a rule, starting with a function as its assigned top expression.

BRFplus comes with a set of common expression types and is regularly enhanced by new expression types. You can create your own expression types and use it in rules.

The predefined types of expression are:

• Boolean Expression

• BRMS Connector Expression

• Case Expression

• Constant Expression

• DB Lookup Expression

• Decision Table Expression

• Decision Tree Expression

• Dynamic Expression

• Formula Expression

• Function Call Expression

• Loop Expression

• Procedure Call Expression

• Random Number Expression

• Search Tree Expression

• Table Operation Expression

• Value Range Expression

Note The following expression types that were part of earlier BRFplus releases are now deprecated. They are no longer supported by SAP:

• Step Sequence
• XSL Transformation

For further details, see SAP Notes 1845412 or 1904368 .