J2EE1.4 SDK

com.sun.appserv.management.monitor.statistics
Interface EJBCacheStats

All Superinterfaces:
Stats

public interface EJBCacheStats
extends Stats

A Stats interface to represent the statistics exposed by the Enterprise Bean Cache. This is based on the statistics that were exposed in S1AS7.0. An implementation of EJB Cache should provide statistical data by implementing this interface.


Method Summary
 BoundedRangeStatistic getBeansInCache()
          Returns total number of EJBs in the associated EJB Cache, as a BoundedRangeStatistic.
 BoundedRangeStatistic getCacheHits()
          Returns the number of times a user request hits an EJB in associated EJB cache instance, as a CountStatistic.
 BoundedRangeStatistic getCacheMisses()
          Returns the number of times a user request fails to find an EJB in associated EJB cache instance, as a CountStatistic.
 CountStatistic getExpiredSessionsRemoved()
          Returns the number of removed Expired Sessions as a CountStatistic.
 CountStatistic getPassivationErrors()
          Returns the number of errors in passivating a Stateful Session Bean, as a CountStatistic.
 CountStatistic getPassivations()
          Returns the number of passivations of a Stateful Session Bean, as a CountStatistic.
 CountStatistic getPassivationSuccesses()
          Returns the number of errors in passivating a Stateful Session Bean, as a CountStatistic.
 
Methods inherited from interface javax.management.j2ee.statistics.Stats
getStatistic, getStatisticNames, getStatistics
 

Method Detail

getCacheMisses

public BoundedRangeStatistic getCacheMisses()
Returns the number of times a user request fails to find an EJB in associated EJB cache instance, as a CountStatistic.

Returns:
an instance of BoundedRangeStatistic

getCacheHits

public BoundedRangeStatistic getCacheHits()
Returns the number of times a user request hits an EJB in associated EJB cache instance, as a CountStatistic.

Returns:
an instance of BoundedRangeStatistic

getBeansInCache

public BoundedRangeStatistic getBeansInCache()
Returns total number of EJBs in the associated EJB Cache, as a BoundedRangeStatistic. Note that this returns the various statistical values like maximum and minimum value attained as a part of the return value.

Returns:
an instance of BoundedRangeStatistic

getPassivations

public CountStatistic getPassivations()
Returns the number of passivations of a Stateful Session Bean, as a CountStatistic.

Returns:
an instance of CountStatistic

getPassivationErrors

public CountStatistic getPassivationErrors()
Returns the number of errors in passivating a Stateful Session Bean, as a CountStatistic. Must be less than or equal to getPassivations()

Returns:
an instance of CountStatistic

getExpiredSessionsRemoved

public CountStatistic getExpiredSessionsRemoved()
Returns the number of removed Expired Sessions as a CountStatistic.

Returns:
an instance of CountStatistic

getPassivationSuccesses

public CountStatistic getPassivationSuccesses()
Returns the number of errors in passivating a Stateful Session Bean, as a CountStatistic. Must be less than or equal to getPassivations()

Returns:
an instance of CountStatistic

J2EE1.4 SDK

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