etm.core.aggregation.persistence
Class PersistentRootAggregator

java.lang.Object
  etm.core.aggregation.RootAggregator
      etm.core.aggregation.persistence.PersistentRootAggregator

All Implemented Interfaces:

Aggregator

public class PersistentRootAggregator
extends RootAggregator

An aggregator that supports persistence provided by a PersistenceBackend. By default the persistence backend is FileSystemPersistenceBackend, however you may supply a custom backends during initialization.

Since:

1.2.0

Version:

$Revision:96 $

Author:

void.fm

Field Summary

protected java.util.Map	backendProperties
protected EtmMonitorContext	context
protected PersistenceBackend	persistenceBackend

Fields inherited from class etm.core.aggregation.RootAggregator

aggregates, ctx

Constructor Summary

PersistentRootAggregator()

Method Summary

AggregatorMetaData	getMetaData() Returns detailed information about the aggregator chain.
void	init(EtmMonitorContext ctx) Lifecycle Method, will be called before Aggregator.start(), after initalization of the current EtmMonitor runtime.
void	setBackendProperties(java.util.Map someProperties)
void	setPersistenceBackend(PersistenceBackend aPersistenceBackend)
void	setPersistenceBackendClass(java.lang.Class aPersistenceBackendClazz)
void	start() Lifecycle method, will be called after all Aggregator instances are initialized by calling Aggregator.init(etm.core.monitor.EtmMonitorContext) and before the EtmMonitor instance will becomes available.
void	stop() Lifecycle method, will be called after the EtmMonitor instance was shutdown.

Methods inherited from class etm.core.aggregation.RootAggregator

add, flush, getAggregate, render, reset, reset

Methods inherited from class java.lang.Object

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

Field Detail

context

protected EtmMonitorContext context

persistenceBackend

protected PersistenceBackend persistenceBackend

backendProperties

protected java.util.Map backendProperties

Constructor Detail

PersistentRootAggregator

public PersistentRootAggregator()

Method Detail

init

public void init(EtmMonitorContext ctx)

Description copied from interface: Aggregator

Lifecycle Method, will be called before Aggregator.start(), after initalization of the current EtmMonitor runtime. Be aware that Plugins are instantiated, but not started at this point.

Specified by:

init in interface Aggregator

Overrides:

init in class RootAggregator

Parameters:

ctx - The current EtmMonitor Context.

start

public void start()

Description copied from interface: Aggregator

Lifecycle method, will be called after all Aggregator instances are initialized by calling Aggregator.init(etm.core.monitor.EtmMonitorContext) and before the EtmMonitor instance will becomes available.

Specified by:

start in interface Aggregator

Overrides:

start in class RootAggregator

stop

public void stop()

Description copied from interface: Aggregator

Lifecycle method, will be called after the EtmMonitor instance was shutdown.

Specified by:

stop in interface Aggregator

Overrides:

stop in class RootAggregator

setPersistenceBackend

public void setPersistenceBackend(PersistenceBackend aPersistenceBackend)

setBackendProperties

public void setBackendProperties(java.util.Map someProperties)

setPersistenceBackendClass

public void setPersistenceBackendClass(java.lang.Class aPersistenceBackendClazz)

getMetaData

public AggregatorMetaData getMetaData()

Description copied from interface: Aggregator

Returns detailed information about the aggregator chain.

Specified by:

getMetaData in interface Aggregator

Overrides:

getMetaData in class RootAggregator

Returns:

The AggregatorMetaData.