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public interface FormulaFunctionDefinition
Provides information about a given FormulaFunction
implementation. This interface must be implemented for each function in the user defined function library.
All of the methods in this interface must be implemented.
Method Summary | |
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FormulaFunctionArgumentDefinition[] |
getArguments()
Gets the arguments that are defined for this function. |
java.lang.String |
getIdentifier()
Gets the String used to identify this function in a function call (or in Crystal Reports). |
FormulaValueType |
getReturnType()
Gets the type of the FormulaValue returned by the user defined function. |
Method Detail |
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FormulaValueType getReturnType()
Gets the type of the FormulaValue returned by the user defined function.
java.lang.String getIdentifier()
Gets the String
used to identify this function in a function call (or in Crystal Reports). The
identifier must begin with a lower case letter and may only contain lower case letters, digits and underscores.
Note: The identifier cannot be a reserved name in any syntax where the function is defined.
String
used to identify this function in a function callFormulaFunctionArgumentDefinition[] getArguments()
Gets the arguments that are defined for this function. If this user defined function has zero arguments, a zero-length array is returned.
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