Package org.apache.openjpa.instrumentation

Class AbstractPreparedQueryCacheInstrument

java.lang.Object

org.apache.openjpa.lib.instrumentation.AbstractInstrument

org.apache.openjpa.instrumentation.AbstractPreparedQueryCacheInstrument

All Implemented Interfaces:

PreparedQueryCacheInstrument, Instrument

Direct Known Subclasses:

PreparedQueryCacheJMXInstrument

public abstract class AbstractPreparedQueryCacheInstrument
extends AbstractInstrument
implements PreparedQueryCacheInstrument

Provides a basic instrument implementation wrapper for the prepared query cache. This class can be extended to create a provider specific instrument for the prepared query cache.

Field Summary

Fields

Modifier and Type	Field	Description
static final long	NO_STATS

Constructor Summary

Constructors

Constructor	Description
AbstractPreparedQueryCacheInstrument()

Method Summary

Modifier and Type	Method	Description
String	getConfigId()
String	getContextRef()
long	getExecutionCount()	Returns number of total execution requests since last reset
long	getExecutionCount(String query)	Returns number of total execution requests since last reset
long	getHitCount()	Returns number of total read requests that have been found in cache since last reset.
long	getHitCount(String query)	Returns number of total read requests that have been found in cache since last reset.
InstrumentationLevel	getLevel()	Gets the instrumentation level of this instrument.
long	getTotalExecutionCount()	Returns number of total exec requests since start.
long	getTotalExecutionCount(String query)	Returns number of total exec requests since start.
long	getTotalHitCount()	Returns number of total read requests that has been found since start.
long	getTotalHitCount(String query)	Returns number of total read requests that has been found since start.
Set<String>	queries()	Returns all queries currently tracked in the cache.
void	reset()	Resets cache statistics
void	setConfigId(String cid)
void	setContextRef(String cref)
void	setPreparedQueryCache(PreparedQueryCache qc)
Date	sinceDate()	Returns date since cache statistics collection were last reset.
Date	startDate()	Returns date cache statistics collection started.

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

getContext, getName, getOptions, getProvider, initialize, 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.lib.instrumentation.Instrument

start, stop

Field Details

NO_STATS

public static final long NO_STATS

See Also:

• Constant Field Values

Constructor Details

AbstractPreparedQueryCacheInstrument

public AbstractPreparedQueryCacheInstrument()

Method Details

setConfigId

public void setConfigId(String cid)

setContextRef

public void setContextRef(String cref)

getConfigId

public String getConfigId()

getContextRef

public String getContextRef()

setPreparedQueryCache

public void setPreparedQueryCache(PreparedQueryCache qc)

getExecutionCount

public long getExecutionCount()

Description copied from interface: PreparedQueryCacheInstrument

Returns number of total execution requests since last reset

Specified by:

getExecutionCount in interface PreparedQueryCacheInstrument

getExecutionCount

public long getExecutionCount(String query)

Description copied from interface: PreparedQueryCacheInstrument

Returns number of total execution requests since last reset

Specified by:

getExecutionCount in interface PreparedQueryCacheInstrument

getTotalExecutionCount

public long getTotalExecutionCount()

Description copied from interface: PreparedQueryCacheInstrument

Returns number of total exec requests since start.

Specified by:

getTotalExecutionCount in interface PreparedQueryCacheInstrument

getTotalExecutionCount

public long getTotalExecutionCount(String query)

Description copied from interface: PreparedQueryCacheInstrument

Returns number of total exec requests since start.

Specified by:

getTotalExecutionCount in interface PreparedQueryCacheInstrument

getHitCount

public long getHitCount()

Description copied from interface: PreparedQueryCacheInstrument

Returns number of total read requests that have been found in cache since last reset.

Specified by:

getHitCount in interface PreparedQueryCacheInstrument

getHitCount

public long getHitCount(String query)

Description copied from interface: PreparedQueryCacheInstrument

Returns number of total read requests that have been found in cache since last reset.

Specified by:

getHitCount in interface PreparedQueryCacheInstrument

getTotalHitCount

public long getTotalHitCount()

Description copied from interface: PreparedQueryCacheInstrument

Returns number of total read requests that has been found since start.

Specified by:

getTotalHitCount in interface PreparedQueryCacheInstrument

getTotalHitCount

public long getTotalHitCount(String query)

Description copied from interface: PreparedQueryCacheInstrument

Returns number of total read requests that has been found since start.

Specified by:

getTotalHitCount in interface PreparedQueryCacheInstrument

reset

public void reset()

Description copied from interface: PreparedQueryCacheInstrument

Resets cache statistics

Specified by:

reset in interface PreparedQueryCacheInstrument

sinceDate

public Date sinceDate()

Description copied from interface: PreparedQueryCacheInstrument

Returns date since cache statistics collection were last reset.

Specified by:

sinceDate in interface PreparedQueryCacheInstrument

startDate

public Date startDate()

Description copied from interface: PreparedQueryCacheInstrument

Returns date cache statistics collection started.

Specified by:

startDate in interface PreparedQueryCacheInstrument

queries

public Set<String> queries()

Description copied from interface: PreparedQueryCacheInstrument

Returns all queries currently tracked in the cache.

Specified by:

queries in interface PreparedQueryCacheInstrument

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 AbstractInstrument

Returns:

the instrumentation level of the instrument