org.apache.openjpa.instrumentation
Interface QueryCacheInstrument

All Known Subinterfaces:

QueryCacheJMXInstrumentMBean

All Known Implementing Classes:

AbstractQueryCacheInstrument, QueryCacheJMXInstrument

public interface QueryCacheInstrument

Interface for providing instrumented data cache metrics and operations.

Method Summary

long	count() Returns the number of total entries in the cache.
long	getEvictionCount() Returns number of total evictions since last reset
long	getExecutionCount() Returns number of total execution requests since last reset
long	getExecutionCount(String queryKey) Returns number of total execution requests since last reset for the specified string-ified query key.
long	getHitCount() Returns number of total read requests that have been found in cache since last reset.
long	getHitCount(String queryKey) Returns number of total read requests that have been found in cache since last reset for the specified string-ified query key.
long	getTotalEvictionCount() Returns number of total eviction requests since start.
long	getTotalExecutionCount() Returns number of total exec requests since start.
long	getTotalExecutionCount(String queryKey) Returns number of total exec requests since start for the specified string-ified query key.
long	getTotalHitCount() Returns number of total read requests that has been found since start.
long	getTotalHitCount(String queryKey) Returns number of total read requests that has been found since start for the specified string-ified query key.
Set<String>	queryKeys() Returns all the string-ified keys for query results in the cache.
void	reset() Resets cache statistics
Date	sinceDate() Returns date since cache statistics collection were last reset.
Date	startDate() Returns date cache statistics collection started.

Method Detail

getTotalExecutionCount

long getTotalExecutionCount()

Returns number of total exec requests since start.

getTotalExecutionCount

long getTotalExecutionCount(String queryKey)

Returns number of total exec requests since start for the specified string-ified query key.

getExecutionCount

long getExecutionCount()

Returns number of total execution requests since last reset

getExecutionCount

long getExecutionCount(String queryKey)

Returns number of total execution requests since last reset for the specified string-ified query key.

getHitCount

long getHitCount()

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

getHitCount

long getHitCount(String queryKey)

Returns number of total read requests that have been found in cache since last reset for the specified string-ified query key.

getTotalHitCount

long getTotalHitCount()

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

getTotalHitCount

long getTotalHitCount(String queryKey)

Returns number of total read requests that has been found since start for the specified string-ified query key.

reset

void reset()

Resets cache statistics

sinceDate

Date sinceDate()

Returns date since cache statistics collection were last reset.

startDate

Date startDate()

Returns date cache statistics collection started.

queryKeys

Set<String> queryKeys()

Returns all the string-ified keys for query results in the cache.

Returns:

getEvictionCount

long getEvictionCount()

Returns number of total evictions since last reset

getTotalEvictionCount

long getTotalEvictionCount()

Returns number of total eviction requests since start.

count

long count()

Returns the number of total entries in the cache.

Returns:

entries