ExpressionContextFunction

The bean named shibboleth.ContextFunctions.Expression executes a Spring Expression Language (SpEL) expression to implement a Function operating against a ProfileRequestContext. The underlying net.shibboleth.idp.profile.context.navigate.SpringExpressionContextLookupFunction class can be used if a function operating against a different context class is required.

The Function is instantiated by supplying a string argument that contains a SpEL expression to evaluate.

Example

<bean id="MyPRCFunction" parent="shibboleth.ContextFunctions.Expression"
	c:expression="#input.getLoggingId()" />

The following additional bean properties are available:

PropertyName	Type	Default	Description

PropertyName	Type	Default	Description
customObject	Bean/Reference		An object to make available to the script via a variable named `custom`
returnOnError	Object	null	What to return if the expression fails
hideExceptions	boolean	false	If true, then the `returnOnError` value is returned if the expression raises an exception, otherwise the exception is passed out
outputType	Class<?>		Adds type checking against the output of the function to enforce type safety

The expression context will have two variables populated: