Four functions are part of the expression language. All other names following an at-sign are references to function rules, instances of the Rule-Utility-Function rule type. An expression can use any of these built-in functions:
Syntax |
Description |
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These functions are part of the expression language. Their names are reserved and cannot be overridden. These functions may only be invoked using the preferred (‘@’) syntax. |
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@if( boolean expression, result1, result2) |
Evaluates the condition in parameter one and then, if true, evaluates and returns parameter two, otherwise evaluates and returns parameter three. Equivalent to the Java ternary operator “?:.” Only the one appropriate result parameter is evaluated. |
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@and( e1, e2, ...) |
Logical AND operation of the (arbitrary number of) parameters (Evaluated left-to-right, stopping when the result is known) |
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@or( e1, e2, ...) |
Logical OR operation of the (arbitrary number of) parameters (Evaluated left-to-right, stopping when the result is known) |
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@java( code) |
The single parameter is treated as Java code and inserted into the translated Java stream without examination or modification. |
| General purpose | |
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@when(name) |
Evaluates a when condition rule in the context of the primary page of the rule in which the expression appears. The parameter can be an expression that evaluates to a text value. |
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@when(name, pagename) |
Evaluates the specified when condition rule using the supplied Note: The primary page for evaluation is supplied as a |
You can use a Value List, Value Group, or Page Group property as an argument to the @SUM(), @MIN(), @MAX() and @AVERAGE().