com.jalios.jcms
Class CacheManager

java.lang.Object
  com.jalios.jcms.db.BasicDBListener
      com.jalios.jcms.db.BasicDBListenerStoreListener
          com.jalios.jcms.CacheManager

All Implemented Interfaces:

DBConstants, DBListener, JcmsConstants, PluginComponent, StoreListener, JaliosConstants, Serializable, EventListener, javax.servlet.http.HttpSessionBindingListener

public class CacheManager
extends BasicDBListenerStoreListener
implements javax.servlet.http.HttpSessionBindingListener, JcmsConstants, Serializable

This class manages the cache of content fragements.

Cache entries can be invalidated either manually (see clearContent() method), or when a timeout is reached or when a mutation occurs on a set of (Storable) classes.

Since:

jcms-3.0

Version:

$Revision: 30893 $

Author:

Olivier Dedieu

See Also:

Serialized Form

Nested Class Summary

class

CacheManager.CacheEntry

Field Summary

protected Channel	channel
protected Map<Class<?>,HashSet<String>>	classMap
protected Map<String,CacheManager.CacheEntry>	contentMap
protected boolean	isDisabled
protected int	maxServersCacheNbr
static String	REVISION
protected Map<String,String>	serversCacheIdMap

Fields inherited from interface com.jalios.jcms.JcmsConstants

ADATE_SEARCH, ADMIN_NOTES_PROP, ADVANCED_TAB, ARCHIVES_DIR, ASCII_WIDTH, CATEGORY_TAB, CDATE_SEARCH, COMMON_ALARM, CONTENT_TAB, COOKIE_MAX_AGE, CTRL_TOPIC_INTERNAL, CTRL_TOPIC_REF, CTRL_TOPIC_VALUE, CTRL_TOPIC_WRITE, CUSTOM_PROP, DOCCHOOSER_HEIGHT, DOCCHOOSER_WIDTH, DOCS_DIR, EDATE_SEARCH, EMAIL_REGEXP, ERROR_MSG, FORBIDDEN_FILE_ACCESS, FORBIDDEN_REDIRECT, FORCE_REDIRECT, ICON_ARCHIVE, ICON_LOCK, ICON_LOCK_STRONG, ICON_WARN, ICON_WH_BOOK_CLOSED, ICON_WH_BOOK_OPEN, INFORMATION_MSG, JALIOS_JUNIT_PROP, JCMS_CADDY, JCMS_MSG_LIST, JSYNC_DOWNLOAD_DIR, JSYNC_SYNC_ALARM, LOG_FILE, LOG_TOPIC_SECURITY, LOGGER_PROP, LOGGER_XMLPROP, MBR_PHOTO_DIR, MDATE_SEARCH, MONITOR_XML, OP_CREATE, OP_DEEP_COPY, OP_DEEP_DELETE, OP_DELETE, OP_MERGE, OP_UPDATE, PDATE_SEARCH, PHOTO_DIR, PHOTO_ICON, PHOTO_ICON_HEIGHT, PHOTO_ICON_WIDTH, PHOTO_LARGE, PHOTO_LARGE_HEIGHT, PHOTO_LARGE_WIDTH, PHOTO_NORMAL, PHOTO_NORMAL_HEIGHT, PHOTO_NORMAL_WIDTH, PHOTO_SMALL, PHOTO_SMALL_HEIGHT, PHOTO_SMALL_WIDTH, PHOTO_TINY, PHOTO_TINY_HEIGHT, PHOTO_TINY_WIDTH, PREVIOUS_TAB, PRINT_VIEW, PRIVATE_FILE_ACCESS, PUBLIC_FILE_ACCESS, READ_RIGHT_TAB, SDATE_SEARCH, SEARCHENGINE_ALARM, SESSION_AUTHORIZED_FILENAMES_SET, STATS_REPORT_DIR, STATUS_PROP, STORE_XML, TEMPLATE_TAB, THUMBNAIL_LARGE_HEIGHT, THUMBNAIL_LARGE_WIDTH, THUMBNAIL_SMALL_HEIGHT, THUMBNAIL_SMALL_WIDTH, UDATE_SEARCH, UPDATE_RIGHT_TAB, UPLOAD_DIR, URL_REGEXP, WARNING_MSG, WEBAPP_PROP, WFEXPRESS_ALARM, WFREMINDER_ALARM, WORKFLOW_TAB, WORKFLOW_XML

Fields inherited from interface com.jalios.util.JaliosConstants

CRLF, MILLIS_IN_ONE_DAY, MILLIS_IN_ONE_HOUR, MILLIS_IN_ONE_MINUTE, MILLIS_IN_ONE_MONTH, MILLIS_IN_ONE_SECOND, MILLIS_IN_ONE_WEEK, MILLIS_IN_ONE_YEAR

Fields inherited from interface com.jalios.jcms.db.DBConstants

ALL_CATEGORIES_SET_FIELD, AUTH_GRP_SET_FIELD, AUTH_MBR_SET_FIELD, AUTHOR_ID_FIELD, CATEGORIES_SET_FIELD, CDATE_FIELD, CHANNEL_JCMSDB_PROP, DBDATA_URID, HAS_NO_READ_RIGHTS, HIBERNATE_MAPPING_ADATE, HIBERNATE_MAPPING_AUTHOR, HIBERNATE_MAPPING_CDATE, HIBERNATE_MAPPING_EDATE, HIBERNATE_MAPPING_MDATE, HIBERNATE_MAPPING_PDATE, HIBERNATE_MAPPING_PSTATUS, HIBERNATE_MAPPING_TITLE, HIBERNATE_MAPPING_WORKSPACE_ID, MDATE_FIELD, PSTATUS_FIELD, ROW_ID_FIELD, SCROLL_FETCH_SIZE, WORKSPACE_ID_FIELD

Constructor Summary

	CacheManager() Constructs a new CacheManager
protected	CacheManager(boolean failsafeMode)

Method Summary

String	addEntry(String contentId, javax.servlet.http.HttpSession session, boolean sessionScope, String content, Class<?>[] classes, long timeout, Map<?,?> extraInfoMap) Add a new cache entry
String	buildEntryId(String contentId, String sessionId) Build the entry id given the content's id and the associated session id.
Collection<CacheManager.CacheEntry>	getCacheEntries() Get all the cache entries
CacheManager.CacheEntry	getCacheEntry(String id) Get the CacheEntry from a given entry's id.
static CacheManager	getFailSafeModeInstance()
int	getMaxServersCacheNbr()
int	getSize() Get the size of the cache (ie the count of cache entries).
void	handleCommitUpdate(Storable storable, Storable oldStorable, boolean firstTime) This method gets called when after a storable has been updated.
void	handleCreate(Storable storable, boolean firstTime) This method gets called when a storable is created.
void	handleDelete(Storable storable, boolean firstTime) This method gets called when a storable is deleted.
void	invalidateClass(Class<?> clazz) Invalidate the content of all entries bound to the given class
boolean	isCached(String id) Check if their is a cache entry associated with the given id.
boolean	isDisabled()
void	onPostDelete(DBData data, org.hibernate.event.PostDeleteEvent event, boolean firstTime)
void	onPostInsert(DBData data, org.hibernate.event.PostInsertEvent event, boolean firstTime)
void	onPostUpdate(DBData data, org.hibernate.event.PostUpdateEvent event, boolean firstTime)
void	reinitialize() Reinitialize the CacheManager.
void	removeAllEntries() Clear all the cache entries.
void	removeAllSessionEntries() Clear all the session cache entries.
void	removeEntry(String id) Remove a cache entry referenced with is id.
void	removeSessionEntries(javax.servlet.http.HttpSession session) Clear all the session cache entries for a given session
void	valueBound(javax.servlet.http.HttpSessionBindingEvent event)
void	valueUnbound(javax.servlet.http.HttpSessionBindingEvent event)

Methods inherited from class com.jalios.jcms.db.BasicDBListenerStoreListener

handlePrepareUpdate

Methods inherited from class com.jalios.jcms.db.BasicDBListener

getAdateFromState, getAuthorIdFromState, getCdateFromState, getEdateFromState, getMdateFromState, getPdateFromState, getPrePstatus, getPrePstatus, getPstatusFromState, hasNoChange, hasNoChange, init, onPreUpdate

Methods inherited from class java.lang.Object

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

Field Detail

REVISION

public static final String REVISION

See Also:

Constant Field Values

isDisabled

protected transient boolean isDisabled

channel

protected transient Channel channel

contentMap

protected final transient Map<String,CacheManager.CacheEntry> contentMap

classMap

protected final transient Map<Class<?>,HashSet<String>> classMap

maxServersCacheNbr

protected transient int maxServersCacheNbr

serversCacheIdMap

protected transient Map<String,String> serversCacheIdMap

Constructor Detail

CacheManager

public CacheManager()

Constructs a new CacheManager

CacheManager

protected CacheManager(boolean failsafeMode)

Method Detail

getFailSafeModeInstance

public static CacheManager getFailSafeModeInstance()

reinitialize

public void reinitialize()

Reinitialize the CacheManager. Reload isDisabled and MaxServersCacheNbr values from properties.

isDisabled

public boolean isDisabled()

Returns:

true if the cache manager is disabled.

getMaxServersCacheNbr

public int getMaxServersCacheNbr()

Returns:

the maximum number of server's cache allowed.

buildEntryId

public String buildEntryId(String contentId,
                           String sessionId)

Build the entry id given the content's id and the associated session id. Given this 2 parameter, the returned id will be always the same.

Parameters:

contentId - the content id

sessionId - the http session id

Returns:

the id to be used for a cache entry.

addEntry

public String addEntry(String contentId,
                       javax.servlet.http.HttpSession session,
                       boolean sessionScope,
                       String content,
                       Class<?>[] classes,
                       long timeout,
                       Map<?,?> extraInfoMap)

Add a new cache entry

Parameters:

contentId - the id of content

session - the session

sessionScope - should the cache entry be stored for this session

content - the content to be cached

classes - an array of classes to listen. Each time a mutation occurs on a (visible) instance of the classes the content of the cache is cleared.

timeout - the timeout of this entry (in minutes)

extraInfoMap - any contextual data to the cache being created

Returns:

the id of the entry (concatenation of id and session's id).

isCached

public boolean isCached(String id)

Check if their is a cache entry associated with the given id.

Parameters:

id - the CacheEntry's id

Returns:

true if there is a cache entry associated with this id, false otherwise.

getSize

public int getSize()

Get the size of the cache (ie the count of cache entries).

Returns:

the count of cache entries

getCacheEntries

public Collection<CacheManager.CacheEntry> getCacheEntries()

Get all the cache entries

Returns:

a collection of CacheEntry

getCacheEntry

public CacheManager.CacheEntry getCacheEntry(String id)

Get the CacheEntry from a given entry's id.

Parameters:

id - the entry's id

Returns:

the CacheEntry bound to the given id

removeEntry

public void removeEntry(String id)

Remove a cache entry referenced with is id.

Parameters:

id - the entry's id

removeAllEntries

public void removeAllEntries()

Clear all the cache entries.

removeAllSessionEntries

public void removeAllSessionEntries()

Clear all the session cache entries.

removeSessionEntries

public void removeSessionEntries(javax.servlet.http.HttpSession session)

Clear all the session cache entries for a given session

Parameters:

session - the session

Since:

jcms-4.0

invalidateClass

public void invalidateClass(Class<?> clazz)

Invalidate the content of all entries bound to the given class

Parameters:

clazz - the class for which the entries must be cleared

handleCreate

public void handleCreate(Storable storable,
                         boolean firstTime)

Description copied from interface: StoreListener

This method gets called when a storable is created.

Specified by:

handleCreate in interface StoreListener

Overrides:

handleCreate in class BasicDBListenerStoreListener

Parameters:

storable - the storable

firstTime - true if it is the first time this operation is processed

See Also:

StoreListener.handleCreate(Storable, boolean)

handleCommitUpdate

public void handleCommitUpdate(Storable storable,
                               Storable oldStorable,
                               boolean firstTime)

Description copied from interface: StoreListener

This method gets called when after a storable has been updated.

Specified by:

handleCommitUpdate in interface StoreListener

Overrides:

handleCommitUpdate in class BasicDBListenerStoreListener

Parameters:

storable - the storable, this instance is the object that was created at first and that will be stored in jcms until deletion of the storable with this ID. You should always manipulate this object if you maintain any index.

oldStorable - the previous version of the storable, it is a clone, do not use in any index, it should only be used to access old values.

firstTime - true if it is the first time this operation is processed

See Also:

StoreListener.handleCommitUpdate(Storable, Storable, boolean)

handleDelete

public void handleDelete(Storable storable,
                         boolean firstTime)

Description copied from interface: StoreListener

This method gets called when a storable is deleted.

Specified by:

handleDelete in interface StoreListener

Overrides:

handleDelete in class BasicDBListenerStoreListener

Parameters:

storable - the storable

firstTime - true if it is the first time this operation is processed

See Also:

StoreListener.handleDelete(Storable, boolean)

onPostInsert

public void onPostInsert(DBData data,
                         org.hibernate.event.PostInsertEvent event,
                         boolean firstTime)

Specified by:

onPostInsert in interface DBListener

Overrides:

onPostInsert in class BasicDBListener

See Also:

DBListener.onPostInsert(DBData, PostInsertEvent, boolean)

onPostUpdate

public void onPostUpdate(DBData data,
                         org.hibernate.event.PostUpdateEvent event,
                         boolean firstTime)

Specified by:

onPostUpdate in interface DBListener

Overrides:

onPostUpdate in class BasicDBListener

See Also:

DBListener.onPostUpdate(DBData, PostUpdateEvent, boolean)

onPostDelete

public void onPostDelete(DBData data,
                         org.hibernate.event.PostDeleteEvent event,
                         boolean firstTime)

Specified by:

onPostDelete in interface DBListener

Overrides:

onPostDelete in class BasicDBListener

See Also:

DBListener.onPostDelete(DBData, PostDeleteEvent, boolean)

valueBound

public void valueBound(javax.servlet.http.HttpSessionBindingEvent event)

Specified by:

valueBound in interface javax.servlet.http.HttpSessionBindingListener

valueUnbound

public void valueUnbound(javax.servlet.http.HttpSessionBindingEvent event)

Specified by:

valueUnbound in interface javax.servlet.http.HttpSessionBindingListener