Altova FlowForce Server 2025 Advanced Edition

To build FlowForce expressions, you can use the operators listed below. Remember that you can test any expression by calling the built-in function builtin_functionsystem/compute.

 

Operator

Description

Example

==

Checks if a and b are equal (numerically equal for numbers, code-point equal for strings).

== 5 computes true

 

2 + 3 == 4 computes false

!=

Checks if a and b are not equal. Note that the following three expressions are equivalent:

 

a != b

not (a == b)

a <> b

+ 2 != 5 computes true

 

+ 2 != 5 computes false

<

Checks if a is less than b (numerically less for numbers, see below for strings).

computes true

<=

Checks if a is less than or equal to b.

5 <=  computes true

>

Checks if a is greater than b.

5 > 1  computes true

>=

Checks if a is greater than or equal to b.

5 >=  computes true

+

Addition.

1 computes 2

-

Subtraction.

1 computes 1

*

Multiplication.

3 *  computes 6

/

Division.

6 / 3 computes 2

 

String comparisons are performed as follows:

 

The common prefix of the two strings are ignored (evaluated on code points).

If both remaining strings are non-empty, their first code points are compared numerically.

Empty strings are less than non-empty strings.

 

Use parentheses to instruct FlowForce to evaluate the expression inside first. For example:

 

2 + 3 * 4 computes 14

 

(2 + 3) * 4 computes 20

 

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