Package org.jgrapes.core

Interface InvocationFilter

All Known Implementing Classes:

RequestHandler.Evaluator.Scope

public interface InvocationFilter

Some HandlerScope implementations use only a subset of the properties of the events passed to HandlerScope.includes(Eligible, Eligible[]) for evaluating the result.

This is done in order to avoid an excessive number of entries in the table that maps events (and channels) to handlers.

When dispatching an event, the superfluous values from the mapping table must be filtered. HandlerScope implementations that do not take all properties of an event into account in their implementation of HandlerScope.includes(Eligible, Eligible[]) must therefore also implement this interface.

Method Summary

Modifier and Type	Method	Description
boolean	includes(EventBase<?> event)	Matches the given event against the criteria for events, taking properties into account that were left out by HandlerScope.includes(Eligible, Eligible[]).

Method Details

includes

boolean includes(EventBase<?> event)

Matches the given event against the criteria for events, taking properties into account that were left out by HandlerScope.includes(Eligible, Eligible[]).

Note that this method is called only with events that have passed the invocation of HandlerScope.includes(Eligible, Eligible[]). It is therefore not required to re-test conditions already checked by HandlerScope.includes(Eligible, Eligible[]).

Parameters:

event - the event

Returns:

true, if successful