com.webobjects.appserver
Class WOSession.PageFragmentCache

java.lang.Object
  java.util.AbstractMap<K,V>
      java.util.HashMap<K,V>
          java.util.LinkedHashMap<String,com.webobjects.appserver._private.WOTransactionRecord>
              com.webobjects.appserver.WOSession.PageFragmentCache

All Implemented Interfaces:

Serializable, Cloneable, Map<String,com.webobjects.appserver._private.WOTransactionRecord>

Enclosing class:

WOSession

public static class WOSession.PageFragmentCache
extends LinkedHashMap<String,com.webobjects.appserver._private.WOTransactionRecord>

Used primarily in Ajax style page caching. We remove the eldest entry if the page frament cache size has grown beyone 2X the settting for WOApplication.pageFragmentCacheSize().

Since:

5.4

See Also:

Serialized Form

Constructor Summary

WOSession.PageFragmentCache()

Method Summary

boolean	cleanPageCache(String fragmentKey) Maintenance the page fragement cache.
WOComponent	pageForContextID(String contextID) For a given contextID, return the page.
protected boolean	removeEldestEntry(Map.Entry<String,com.webobjects.appserver._private.WOTransactionRecord> eldest)

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, get

Methods inherited from class java.util.HashMap

clone, containsKey, entrySet, isEmpty, keySet, put, putAll, remove, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

containsKey, entrySet, equals, hashCode, isEmpty, keySet, put, putAll, remove, size, values

Constructor Detail

WOSession.PageFragmentCache

public WOSession.PageFragmentCache()

Method Detail

removeEldestEntry

protected boolean removeEldestEntry(Map.Entry<String,com.webobjects.appserver._private.WOTransactionRecord> eldest)

Overrides:

removeEldestEntry in class LinkedHashMap<String,com.webobjects.appserver._private.WOTransactionRecord>

pageForContextID

public WOComponent pageForContextID(String contextID)

For a given contextID, return the page.

Parameters:

contextID -

Returns:

WOComponent

Since:

5.4

cleanPageCache

public boolean cleanPageCache(String fragmentKey)

Maintenance the page fragement cache. Remove the oldest entry if we're about to add a new one and that would put us over the cache size. Also, clears out expired pages from the cache when invoked.

Parameters:

fragmentKey - if null, will perform maintenance on the cache

Returns:

boolean true if cache entry successfully cleared

Since:

5.4