Interface Function

sql/src/main/java/io/cloudevents/sql/Function.java:11–24

Function is a CloudEvents Expression Language function definition and implementation.

 * Function is a CloudEvents Expression Language function definition and implementation.
 */
public interface Function extends FunctionSignature {

    /**
     * Invoke the function logic.
     *
     * @param ctx               the evaluation context
     * @param evaluationRuntime the evaluation runtime
     * @param event             the expression input event
     * @param arguments         the arguments passed to this function. Note: the arguments are already cast to the appropriate type declared in the signature
     * @return the return value of the function
     */
    EvaluationResult invoke(EvaluationContext ctx, EvaluationRuntime evaluationRuntime, CloudEvent event, List<Object> arguments);

}