org.apache.cayenne.event
Class JavaGroupsBridgeFactory

java.lang.Object
  org.apache.cayenne.event.JavaGroupsBridgeFactory

All Implemented Interfaces:

EventBridgeFactory

public class JavaGroupsBridgeFactory
extends Object
implements EventBridgeFactory

Factory to create JavaGroupsBridge instances. If JavaGroups library is not installed this factory will return a noop EventBridge as a failover mechanism.

Since:

1.1

Field Summary

static String	JGROUPS_CONFIG_URL_PROPERTY Defines a property for JavaGroups XML configuration file.
static String	MCAST_ADDRESS_DEFAULT
static String	MCAST_ADDRESS_PROPERTY
static String	MCAST_PORT_DEFAULT
static String	MCAST_PORT_PROPERTY

Constructor Summary

JavaGroupsBridgeFactory()

Method Summary

EventBridge

createEventBridge(Collection<EventSubject> localSubjects, String externalSubject, Map<String,Object> properties) Creates a JavaGroupsBridge instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MCAST_ADDRESS_DEFAULT

public static final String MCAST_ADDRESS_DEFAULT

See Also:

Constant Field Values

MCAST_PORT_DEFAULT

public static final String MCAST_PORT_DEFAULT

See Also:

Constant Field Values

MCAST_ADDRESS_PROPERTY

public static final String MCAST_ADDRESS_PROPERTY

See Also:

Constant Field Values

MCAST_PORT_PROPERTY

public static final String MCAST_PORT_PROPERTY

See Also:

Constant Field Values

JGROUPS_CONFIG_URL_PROPERTY

public static final String JGROUPS_CONFIG_URL_PROPERTY

Defines a property for JavaGroups XML configuration file. Example file can be found at http://www.filip.net/javagroups/javagroups-protocol.xml.

See Also:

Constant Field Values

Constructor Detail

JavaGroupsBridgeFactory

public JavaGroupsBridgeFactory()

Method Detail

createEventBridge

public EventBridge createEventBridge(Collection<EventSubject> localSubjects,
                                     String externalSubject,
                                     Map<String,Object> properties)

Creates a JavaGroupsBridge instance. Since JavaGroups is not shipped with Cayenne and should be installed separately, a common misconfiguration problem may be the absense of JavaGroups jar file. This factory returns a dummy noop EventBridge, if this is the case. This would allow the application to continue to run, but without remote notifications.

Specified by:

createEventBridge in interface EventBridgeFactory