org.apache.openjpa.instrumentation.jmx
Class QueryCacheJMXInstrument

java.lang.Object
  org.apache.openjpa.lib.instrumentation.AbstractInstrument
      org.apache.openjpa.instrumentation.AbstractQueryCacheInstrument
          org.apache.openjpa.instrumentation.jmx.QueryCacheJMXInstrument

All Implemented Interfaces:

JMXInstrument, QueryCacheJMXInstrumentMBean, QueryCacheInstrument, Instrument

public class QueryCacheJMXInstrument
extends AbstractQueryCacheInstrument
implements JMXInstrument, QueryCacheJMXInstrumentMBean

A JMX-specific instrument for the query cache

Field Summary

Fields inherited from class org.apache.openjpa.instrumentation.AbstractQueryCacheInstrument

NO_STATS

Constructor Summary

QueryCacheJMXInstrument()

Method Summary

InstrumentationLevel	getLevel() Gets the instrumentation level of this instrument.
String	getName() Returns the name of the instrument.
ObjectName	getObjectName() Returns the JMX object name for the instrument
void	initialize() Initializes the instrument.
void	start() Starts the instrument.
void	stop() Starts the instrument.

Methods inherited from class org.apache.openjpa.instrumentation.AbstractQueryCacheInstrument

count, getConfigId, getContextRef, getEvictionCount, getExecutionCount, getExecutionCount, getHitCount, getHitCount, getTotalEvictionCount, getTotalExecutionCount, getTotalExecutionCount, getTotalHitCount, getTotalHitCount, queryKeys, reset, setConfigId, setContextRef, setPreparedQueryCache, setQueryCache, sinceDate, startDate

Methods inherited from class org.apache.openjpa.lib.instrumentation.AbstractInstrument

getContext, getOptions, getProvider, isStarted, restart, setContext, setOptions, setProvider, setStarted

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.instrumentation.jmx.JMXInstrument

getConfigId, getContextRef, setConfigId, setContextRef

Methods inherited from interface org.apache.openjpa.lib.instrumentation.Instrument

getContext, getOptions, getProvider, isStarted, restart, setContext, setOptions, setProvider, setStarted

Methods inherited from interface org.apache.openjpa.instrumentation.QueryCacheInstrument

count, getEvictionCount, getExecutionCount, getExecutionCount, getHitCount, getHitCount, getTotalEvictionCount, getTotalExecutionCount, getTotalExecutionCount, getTotalHitCount, getTotalHitCount, queryKeys, reset, sinceDate, startDate

Constructor Detail

QueryCacheJMXInstrument

public QueryCacheJMXInstrument()

Method Detail

getName

public String getName()

Description copied from interface: Instrument

Returns the name of the instrument. Must be unique per-provider.

Specified by:

getName in interface Instrument

Specified by:

getName in class AbstractInstrument

getLevel

public InstrumentationLevel getLevel()

Description copied from interface: Instrument

Gets the instrumentation level of this instrument. The instrumentation level determines if and when the instrument will automatically start and stop.

Specified by:

getLevel in interface Instrument

Overrides:

getLevel in class AbstractQueryCacheInstrument

Returns:

the instrumentation level of the instrument

initialize

public void initialize()

Description copied from interface: Instrument

Initializes the instrument. Depending on the instrument, the provider, options, and various options may need to be set before calling this method.

Specified by:

initialize in interface Instrument

Specified by:

initialize in class AbstractInstrument

getObjectName

public ObjectName getObjectName()

Description copied from interface: JMXInstrument

Returns the JMX object name for the instrument

Specified by:

getObjectName in interface JMXInstrument

Returns:

start

public void start()

Description copied from interface: Instrument

Starts the instrument. Typically this will be performed through the provider, but in some cases an instrument will have its own specialized startup.

Specified by:

start in interface Instrument

stop

public void stop()

Description copied from interface: Instrument

Starts the instrument. Typically this will be performed through the provider, but in some cases an instrument will have its own specialized shutdown.

Specified by:

stop in interface Instrument