oracle.jbo.mom
Class DefinitionContextAgeable

java.lang.Object
  oracle.jbo.mom.DefinitionContext
      oracle.jbo.mom.DefinitionContextStandard
          oracle.jbo.mom.DefinitionContextAgeable

All Implemented Interfaces:

DefinitionMgrListener

public class DefinitionContextAgeable
extends DefinitionContextStandard
implements DefinitionMgrListener

This class provides an implementation of the abstract DefinitionContext class in which the MOM cache supports ageing.

In this class (as in its superclass), no state is shared between the MOM cache and MOM parser functionality, and the latter is delegated to a MOMParser provided to the constructor. (The client can choose MDS vs non-MDS versions of the MOMParser).

Field Summary

static java.lang.String	USE_OPER_FIND
static java.lang.String	USE_OPER_INSERT
static java.lang.String	USE_OPER_UNRETIRE

Fields inherited from class oracle.jbo.mom.DefinitionContextStandard

mDefObjCount

Method Summary

void	dumpDefObjInfo(DefinitionManager manager, int index, java.lang.Object key, DefinitionObjectInfo defObjInfo, boolean forUseChain, java.io.PrintWriter out)
void	objectUseUpdated(DefinitionManager manager, DefinitionContext defCtx, java.lang.String oper, DefinitionObjectInfo defObjInfo)
void	retireLeastRecentlyUsed(int numToRetire) Retires the specified number of least recently used non-retired ageable metaobjects in the MOM cache.
boolean	setDefCachePolicy(int numStronglyHeldUpperLimit, boolean manageLRU, boolean unretireRecentlyUsed, boolean useSoftRef)

Methods inherited from class java.lang.Object

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

Field Detail

USE_OPER_INSERT

public static final java.lang.String USE_OPER_INSERT

See Also:

Constant Field Values

USE_OPER_FIND

public static final java.lang.String USE_OPER_FIND

See Also:

Constant Field Values

USE_OPER_UNRETIRE

public static final java.lang.String USE_OPER_UNRETIRE

See Also:

Constant Field Values

Method Detail

setDefCachePolicy

public boolean setDefCachePolicy(int numStronglyHeldUpperLimit,
                                 boolean manageLRU,
                                 boolean unretireRecentlyUsed,
                                 boolean useSoftRef)

retireLeastRecentlyUsed

public void retireLeastRecentlyUsed(int numToRetire)

Description copied from class: DefinitionContext

Retires the specified number of least recently used non-retired ageable metaobjects in the MOM cache. If the MOM cache contains fewer non-retired ageable metaobjects than the specified number, then all ageable metaobjects will be retired. This method is a no-op in a subclass which does not support ageing.

Overrides:

retireLeastRecentlyUsed in class DefinitionContext

objectUseUpdated

public void objectUseUpdated(DefinitionManager manager,
                             DefinitionContext defCtx,
                             java.lang.String oper,
                             DefinitionObjectInfo defObjInfo)

Specified by:

objectUseUpdated in interface DefinitionMgrListener

dumpDefObjInfo

public void dumpDefObjInfo(DefinitionManager manager,
                           int index,
                           java.lang.Object key,
                           DefinitionObjectInfo defObjInfo,
                           boolean forUseChain,
                           java.io.PrintWriter out)

Specified by:

dumpDefObjInfo in interface DefinitionMgrListener