org.apache.tamaya.events.spi

Class BaseConfigEvent<T>

java.lang.Object

org.apache.tamaya.events.spi.BaseConfigEvent<T>

Type Parameters:

T - the vent type

All Implemented Interfaces:

ConfigEvent<T>

public abstract class BaseConfigEvent<T>
extends Object
implements ConfigEvent<T>

Abstract base class for implementing your own configuration events.

Field Summary

Fields

Modifier and Type	Field and Description
protected T	paylod
protected long	timestamp
protected String	version

Constructor Summary

Constructors

Constructor and Description
BaseConfigEvent(T paylod, Class<T> type)

Method Summary

Methods

Modifier and Type	Method and Description
T	getResource() Get the underlying property provider/configuration.
Class<T>	getResourceType() Access the type of resource.
long	getTimestamp() Get the timestamp in millis from the current epoch. it is expected that the timestamp and the version are unique to identify a changeset.
String	getVersion() Get the version relative to the observed resource.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

timestamp

protected long timestamp

version

protected String version

paylod

protected final T paylod

Constructor Detail

BaseConfigEvent

public BaseConfigEvent(T paylod,
               Class<T> type)

Method Detail

getResourceType

public Class<T> getResourceType()

Description copied from interface: ConfigEvent

Access the type of resource. This allows to easily determine the resource an event wants to observe.

Specified by:

getResourceType in interface ConfigEvent<T>

Returns:

the resource type.

getResource

public T getResource()

Description copied from interface: ConfigEvent

Get the underlying property provider/configuration.

Specified by:

getResource in interface ConfigEvent<T>

Returns:

the underlying property provider/configuration, never null.

getVersion

public String getVersion()

Description copied from interface: ConfigEvent

Get the version relative to the observed resource. The version is required to be unique for each change emmitted for a resource. There is no further requirement how this uniqueness is modelled, so returning a UUID is a completely valid strategy.

Specified by:

getVersion in interface ConfigEvent<T>

Returns:

the base version.

getTimestamp

public long getTimestamp()

Description copied from interface: ConfigEvent

Get the timestamp in millis from the current epoch. it is expected that the timestamp and the version are unique to identify a changeset.

Specified by:

getTimestamp in interface ConfigEvent<T>

Returns:

the timestamp, when this changeset was created.

toString

public String toString()

Overrides:

toString in class Object