About Function rules
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Use a function rule to define a Java function that is accessed through rule resolution. You can reference function rules in expressions and directly in Java. Each function belongs to a library (Rule-Utility-Library rule type), indicated by the first key part.
Users can also create function alias rules to create complex SQL expressions that may be needed in Report Definition rules. See About Function Alias rules for more information about SQL function aliases.
Use the following syntax to call a function in an expression. In the syntax shown, square brackets indicate that a value is optional:
@[(RulesetName: LibraryName )].functionName([functionParameters])
For example, you can use the following to compute a value:
@(MyRuleSet:MyGeoLibrary).MyGeographicFunction( Latitude, Longitude)
From within Java code, use only lowercase for the RuleSet Name and library name, and exact case for the function name. Replace any dash characters with an underscore character.
myruleset_mygeolibrary.MyGeographicFunction(Latitude, Longitude);
Use the Records Explorer to list all function rules available to you.
Function rules are part of the Technical category. A function rule is an instance of the Rule-Utility-Function rule type.
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Functions in expressions
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Atlas — Standard functions Atlas — Standard SQL function alias rules |
Technical category
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