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com.tangosol.net.events
Class AbstractEventInterceptor

java.lang.Object
com.tangosol.net.events.AbstractEventInterceptor

All Implemented Interfaces:

EventInterceptor

public abstract class AbstractEventInterceptor

extends java.lang.Object

implements EventInterceptor

An abstract base implementation of EventInterceptor.

Since:

Coherence 3.7.1

Author:

mwj, rhan, nsa, rhl 2011.03.29

Field Summary

protected boolean	m_fFirst Flag indicating whether this EventInterceptor should be added at the head of the EventDispatcher's interceptor chain.
protected java.util.Set	m_setTypes The set of event types that this EventInterceptor subscribes to.

Constructor Summary

protected	AbstractEventInterceptor() Construct an EventInterceptor that subscribes to all events registering at the end of the interceptor chain.
protected	AbstractEventInterceptor(boolean fFirst) Construct an EventInterceptor that subscribes to all events.
protected	AbstractEventInterceptor(java.util.Set setTypes, boolean fFirst) Construct an EventInterceptor with specified Event types and chain position.

Method Summary

abstract boolean	evaluate(EventDispatcher dispatcher) Evaluate whether this EventInterceptor should be registered with the specified EventDispatcher.
java.util.Set	getEventTypes() Return the set of event types that this EventInterceptor subscribes to.
void	introduceEventDispatcher(java.lang.String sIdentifier, EventDispatcher dispatcher) Introduce and possibly bind this EventInterceptor to the specified EventDispatcher.
boolean	isFirst() Return true iff this EventInterceptor should be added to the head of the EventDispatcher's chain of EventInterceptors.

Methods inherited from interface com.tangosol.net.events.EventInterceptor

onEvent

Field Detail

m_fFirst

protected boolean m_fFirst

Flag indicating whether this EventInterceptor should be added at the head of the EventDispatcher's interceptor chain.

m_setTypes

protected java.util.Set m_setTypes

The set of event types that this EventInterceptor subscribes to.

Constructor Detail

AbstractEventInterceptor

protected AbstractEventInterceptor()

Construct an EventInterceptor that subscribes to all events registering at the end of the interceptor chain.

AbstractEventInterceptor

protected AbstractEventInterceptor(boolean fFirst)

Construct an EventInterceptor that subscribes to all events.

Parameters:

fFirst - true iff the EventInterceptor is to be added to the head of the EventDispatcher interceptor chain

AbstractEventInterceptor

protected AbstractEventInterceptor(java.util.Set setTypes,
                                   boolean fFirst)

Construct an EventInterceptor with specified Event types and chain position.

Parameters:

setTypes - the set of Event types this interceptor subscribes to, or null to subscribe to all events

fFirst - true iff the EventInterceptor is to be added to the head of the EventDispatcher interceptor chain

Method Detail

introduceEventDispatcher

public void introduceEventDispatcher(java.lang.String sIdentifier,
                                     EventDispatcher dispatcher)

Introduce and possibly bind this EventInterceptor to the specified EventDispatcher.

Note that EventInterceptors are responsible for determining whether they should be registered with an EventDispatcher by calling EventDispatcher.addEventInterceptor(java.lang.String, com.tangosol.net.events.EventInterceptor, java.util.Set, boolean).

Specified by:

introduceEventDispatcher in interface EventInterceptor

Parameters:

sIdentifier - the unique name identifying this interceptor

dispatcher - the dispatcher being introduced

getEventTypes

public java.util.Set getEventTypes()

Return the set of event types that this EventInterceptor subscribes to.

Returns:

the set of event types that this interceptor subscribes to

isFirst

public boolean isFirst()

Return true iff this EventInterceptor should be added to the head of the EventDispatcher's chain of EventInterceptors.

Returns:

true iff this interceptor should be added to the head of the dispatcher's chain of interceptors

evaluate

public abstract boolean evaluate(EventDispatcher dispatcher)

Evaluate whether this EventInterceptor should be registered with the specified EventDispatcher.

Parameters:

dispatcher - the EventDispatcher to be evaluated

Returns:

true iff this interceptor should be registered with the specified dispatcher

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