Package org.ametys.web.cache.pageelement

Class InvalidatePageElementCacheObserver

java.lang.Object

org.apache.avalon.framework.logger.AbstractLogEnabled

org.ametys.web.cache.pageelement.InvalidatePageElementCacheObserver

All Implemented Interfaces:

Observer, Configurable, LogEnabled, Serviceable

public class InvalidatePageElementCacheObserver
extends AbstractLogEnabled
implements Observer, Serviceable, Configurable

Handles the PageElementCache based on the various PageElementCachePolicy.

Field Summary

Fields

Modifier and Type	Field	Description
private ServiceManager	_manager
private PageElementCache	_pageElementCache
private PageElementCachePolicyExtensionPoint	_pageElementCachePolicyExtensionPoint
private SiteManager	_siteManager

Fields inherited from interface org.ametys.core.observation.Observer

MAX_PRIORITY, MIN_PRIORITY

Constructor Summary

Constructors

Constructor	Description
InvalidatePageElementCacheObserver()

Method Summary

Modifier and Type	Method	Description
private void	_doObserve(String workspace, Site site, Event event)
private Set<PageElementCachePolicy>	_firstPass(Set<PageElementCachePolicy> policies, String workspace, Site site, String pageElementType, Event event)
private Site	_getSite(Event event)
private void	_removeItemIfNecessary(String workspace, String pageElementType, String elementId, String siteName, boolean hasAtLeastOneRemove, boolean hasAtLeastOneKeep, boolean hasAtLeastOneNeedInfo)
private void	_secondPass(Set<PageElementCachePolicy> policies, String workspace, Site site, String pageElementType, String elementId, Event event)
void	configure(Configuration configuration)
int	getPriority(Event event)	Retrieves the priority to observe this event. This can be used to process a supported event before others observers.
void	observe(Event event, Map<String,Object> transientVars)	Observes an event.
void	service(ServiceManager manager)
boolean	supports(Event event)	Checks if the event is supported.

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Field Detail

_manager

private ServiceManager _manager

_pageElementCache

private PageElementCache _pageElementCache

_pageElementCachePolicyExtensionPoint

private PageElementCachePolicyExtensionPoint _pageElementCachePolicyExtensionPoint

_siteManager

private SiteManager _siteManager

Constructor Detail

InvalidatePageElementCacheObserver

public InvalidatePageElementCacheObserver()

Method Detail

service

public void service(ServiceManager manager)
             throws ServiceException

Specified by:

service in interface Serviceable

Throws:

ServiceException

configure

public void configure(Configuration configuration)
               throws ConfigurationException

Specified by:

configure in interface Configurable

Throws:

ConfigurationException

getPriority

public int getPriority(Event event)

Description copied from interface: Observer

Retrieves the priority to observe this event.
This can be used to process a supported event before others observers.

Specified by:

getPriority in interface Observer

Parameters:

event - the event.

Returns:

the priority where 0 the max priority and Integer.MAX_VALUE the min priority.

supports

public boolean supports(Event event)

Description copied from interface: Observer

Checks if the event is supported. If true, the observe(Event) method will be called.

Specified by:

supports in interface Observer

Parameters:

event - the event.

Returns:

true for observing this event, false otherwise.

observe

public void observe(Event event,
                    Map<String,Object> transientVars)
             throws Exception

Description copied from interface: Observer

Observes an event.

Specified by:

observe in interface Observer

Parameters:

event - the event.

transientVars - transientVars passed from one Observer to another when processing a single Event. This may allow optimizations between observers.

Throws:

Exception - if an error occurs. All exceptions will be logged but not propagated, as the observation mechanism should never fail.

_doObserve

private void _doObserve(String workspace,
                        Site site,
                        Event event)

_firstPass

private Set<PageElementCachePolicy> _firstPass(Set<PageElementCachePolicy> policies,
                                               String workspace,
                                               Site site,
                                               String pageElementType,
                                               Event event)

_secondPass

private void _secondPass(Set<PageElementCachePolicy> policies,
                         String workspace,
                         Site site,
                         String pageElementType,
                         String elementId,
                         Event event)

_removeItemIfNecessary

private void _removeItemIfNecessary(String workspace,
                                    String pageElementType,
                                    String elementId,
                                    String siteName,
                                    boolean hasAtLeastOneRemove,
                                    boolean hasAtLeastOneKeep,
                                    boolean hasAtLeastOneNeedInfo)

_getSite

private Site _getSite(Event event)