Interface QueryInterpretationCache

@Incubating(since="6.0")
public interface QueryInterpretationCache

Cache for various parts of translating or interpreting queries.

See Also:

• QuerySettings.QUERY_PLAN_CACHE_ENABLED
• QuerySettings.QUERY_PLAN_CACHE_MAX_SIZE

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	QueryInterpretationCache.Key

Method Summary

Modifier and Type	Method	Description
<R> void	cacheHqlInterpretation(Object cacheKey, HqlInterpretation<R> hqlInterpretation)
void	cacheNonSelectQueryPlan(QueryInterpretationCache.Key key, NonSelectQueryPlan plan)
void	close()	Close the cache when the SessionFactory is closed.
static QueryInterpretationCache.Key	createInterpretationsKey(InterpretationsKeySource keySource)
NonSelectQueryPlan	getNonSelectQueryPlan(QueryInterpretationCache.Key key)
int	getNumberOfCachedHqlInterpretations()
int	getNumberOfCachedQueryPlans()
boolean	isEnabled()
<R> HqlInterpretation<R>	resolveHqlInterpretation(String queryString, Class<R> expectedResultType, HqlTranslator translator)
ParameterInterpretation	resolveNativeQueryParameters(String queryString, Function<String, ParameterInterpretation> creator)
default <K extends QueryInterpretationCache.Key, R> SelectQueryPlan<R>	resolveSelectQueryPlan(K key, Function<K, SelectQueryPlan<R>> creator)
<R> SelectQueryPlan<R>	resolveSelectQueryPlan(QueryInterpretationCache.Key key, Supplier<SelectQueryPlan<R>> creator)

Method Details

createInterpretationsKey

static QueryInterpretationCache.Key createInterpretationsKey(InterpretationsKeySource keySource)

getNumberOfCachedHqlInterpretations

int getNumberOfCachedHqlInterpretations()

getNumberOfCachedQueryPlans

int getNumberOfCachedQueryPlans()

resolveHqlInterpretation

<R> HqlInterpretation<R> resolveHqlInterpretation(String queryString,
 Class<R> expectedResultType,
 HqlTranslator translator)

cacheHqlInterpretation

<R> void cacheHqlInterpretation(Object cacheKey,
 HqlInterpretation<R> hqlInterpretation)

resolveSelectQueryPlan

<R> SelectQueryPlan<R> resolveSelectQueryPlan(QueryInterpretationCache.Key key,
 Supplier<SelectQueryPlan<R>> creator)

resolveSelectQueryPlan

default <K extends QueryInterpretationCache.Key, R>
SelectQueryPlan<R> resolveSelectQueryPlan(K key,
 Function<K, SelectQueryPlan<R>> creator)

getNonSelectQueryPlan

NonSelectQueryPlan getNonSelectQueryPlan(QueryInterpretationCache.Key key)

cacheNonSelectQueryPlan

void cacheNonSelectQueryPlan(QueryInterpretationCache.Key key,
 NonSelectQueryPlan plan)

resolveNativeQueryParameters

ParameterInterpretation resolveNativeQueryParameters(String queryString,
 Function<String, ParameterInterpretation> creator)

isEnabled

boolean isEnabled()

close

void close()

Close the cache when the SessionFactory is closed.

Note that depending on the cache strategy implementation chosen, clearing the cache might not reclaim all the memory.

Typically, when using LIRS, clearing the cache only invalidates the entries but the outdated entries are kept in memory until they are replaced by others. It is not considered a memory leak as the cache is bounded.