org.apache.jetspeed.page.impl
Class DatabasePageManagerCache

java.lang.Object
  org.apache.jetspeed.page.impl.DatabasePageManagerCache

All Implemented Interfaces:

org.apache.ojb.broker.cache.ObjectCache

public class DatabasePageManagerCache
extends Object
implements org.apache.ojb.broker.cache.ObjectCache

DatabasePageManagerCache

Version:

$Id: $

Author:

Randy Watler

Nested Class Summary

private static class

DatabasePageManagerCache.Entry Entry Cache entry class adding entry timestamp to track expiration

Field Summary

private static HashMap	cacheByOID
private static HashMap	cacheByPath
private static int	cacheExpiresSeconds
private static LinkedList	cacheLRUList
private static int	cacheSize
private static boolean	constraintsEnabled
private static org.apache.jetspeed.page.PageManager	pageManager
private static boolean	permissionsEnabled
protected static ThreadLocal	transactionedOperations

Constructor Summary

DatabasePageManagerCache(org.apache.ojb.broker.PersistenceBroker broker, Properties props)
DatabasePageManagerCache Construct a cache instance using OJB compliant signatures.

Method Summary

static void	addTransaction(TransactionedOperation operation)
void	cache(org.apache.ojb.broker.Identity oid, Object obj)
static void	cacheAdd(org.apache.ojb.broker.Identity oid, Object obj) cacheAdd Add object to cache and cache node instances by unique path; infuse nodes loaded by OJB with page manager configuration.
static void	cacheClear() cacheClear Clear object and node caches.
static void	cacheInit(DatabasePageManager dbPageManager) cacheInit Initialize cache using page manager configuration.
static Object	cacheLookup(org.apache.ojb.broker.Identity oid) cacheLookup Lookup objects by identity.
static NodeImpl	cacheLookup(String path) cacheLookup Lookup node instances by unique path.
static void	cacheRemove(org.apache.ojb.broker.Identity oid) cacheRemove Remove identified object from object and node caches.
static void	cacheRemove(String path) cacheRemove Remove identified object from object and node caches.
private static void	cacheRemoveEntry(DatabasePageManagerCache.Entry entry, boolean remove) cacheRemoveEntry Remove specified entry from cache.
private static Object	cacheValidateEntry(DatabasePageManagerCache.Entry entry) cacheValidateEntry Validate specified entry from cache, returning cached object if valid.
void	clear()
static void	dump()
static List	getTransactions()
Object	lookup(org.apache.ojb.broker.Identity oid)
void	remove(org.apache.ojb.broker.Identity oid)
static void	resetCachedSecurityConstraints() resetCachedSecurityConstraints Reset cached security constraints in all cached node objects.
static void	rollbackTransactions()
static void	setPageManagerProxy(org.apache.jetspeed.page.PageManager proxy) setPageManagerProxy

Methods inherited from class java.lang.Object

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

Field Detail

cacheByOID

private static HashMap cacheByOID

cacheLRUList

private static LinkedList cacheLRUList

cacheByPath

private static HashMap cacheByPath

cacheSize

private static int cacheSize

cacheExpiresSeconds

private static int cacheExpiresSeconds

constraintsEnabled

private static boolean constraintsEnabled

permissionsEnabled

private static boolean permissionsEnabled

pageManager

private static org.apache.jetspeed.page.PageManager pageManager

transactionedOperations

protected static ThreadLocal transactionedOperations

Constructor Detail

DatabasePageManagerCache

public DatabasePageManagerCache(org.apache.ojb.broker.PersistenceBroker broker,
                                Properties props)

DatabasePageManagerCache Construct a cache instance using OJB compliant signatures.

Parameters:

broker - broker that is to own cache

props - attribute properties passed to cache

Method Detail

cacheInit

public static void cacheInit(DatabasePageManager dbPageManager)

cacheInit Initialize cache using page manager configuration.

Parameters:

pageManager - configured page manager

setPageManagerProxy

public static void setPageManagerProxy(org.apache.jetspeed.page.PageManager proxy)

setPageManagerProxy

Parameters:

proxy - proxied page manager interface used to inject into Folder instances to provide transaction/interception

cacheLookup

public static NodeImpl cacheLookup(String path)

cacheLookup Lookup node instances by unique path.

Parameters:

path - node unique path

Returns:

cached node

cacheAdd

public static void cacheAdd(org.apache.ojb.broker.Identity oid,
                            Object obj)

cacheAdd Add object to cache and cache node instances by unique path; infuse nodes loaded by OJB with page manager configuration.

Parameters:

oid - object/node indentity

obj - object/node to cache

cacheClear

public static void cacheClear()

cacheClear Clear object and node caches.

cacheLookup

public static Object cacheLookup(org.apache.ojb.broker.Identity oid)

cacheLookup Lookup objects by identity.

Parameters:

oid - object identity

Returns:

cached object

cacheRemove

public static void cacheRemove(org.apache.ojb.broker.Identity oid)

cacheRemove Remove identified object from object and node caches.

Parameters:

oid - object identity

cacheRemove

public static void cacheRemove(String path)

cacheRemove Remove identified object from object and node caches.

Parameters:

path - object path

cacheValidateEntry

private static Object cacheValidateEntry(DatabasePageManagerCache.Entry entry)

cacheValidateEntry Validate specified entry from cache, returning cached object if valid.

Parameters:

entry - cache entry to validate

Returns:

validated object from cache

cacheRemoveEntry

private static void cacheRemoveEntry(DatabasePageManagerCache.Entry entry,
                                     boolean remove)

cacheRemoveEntry Remove specified entry from cache.

Parameters:

entry - cache entry to remove

remove - enable removal from cache

resetCachedSecurityConstraints

public static void resetCachedSecurityConstraints()

resetCachedSecurityConstraints Reset cached security constraints in all cached node objects.

cache

public void cache(org.apache.ojb.broker.Identity oid,
                  Object obj)

Specified by:

cache in interface org.apache.ojb.broker.cache.ObjectCache

clear

public void clear()

Specified by:

clear in interface org.apache.ojb.broker.cache.ObjectCache

lookup

public Object lookup(org.apache.ojb.broker.Identity oid)

Specified by:

lookup in interface org.apache.ojb.broker.cache.ObjectCache

remove

public void remove(org.apache.ojb.broker.Identity oid)

Specified by:

remove in interface org.apache.ojb.broker.cache.ObjectCache

dump

public static void dump()

getTransactions

public static List getTransactions()

addTransaction

public static void addTransaction(TransactionedOperation operation)

Parameters:

principal - The principal to set.

rollbackTransactions

public static void rollbackTransactions()