Class QueryOptimizer.QueryPlanCache

java.lang.Object

com.loomcache.server.query.QueryOptimizer.QueryPlanCache

Enclosing class:

QueryOptimizer

public static final class QueryOptimizer.QueryPlanCache
extends Object

LRU cache for parsed and optimized query plans.

Constructor Summary

Constructors

Constructor	Description
QueryPlanCache()
QueryPlanCache(int maxSize)

Method Summary

Modifier and Type	Method	Description
@Nullable QueryOptimizer.OptimizedQueryPlan	get(String normalizedSql)
double	getHitRate()
long	getHits()
long	getMisses()
void	invalidate(String normalizedSql)
void	invalidateAll()
void	put(String normalizedSql, QueryOptimizer.OptimizedQueryPlan optimizedPlan)
int	size()

Methods inherited from class Object

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

Constructor Details

QueryPlanCache

public QueryPlanCache(int maxSize)

QueryPlanCache

public QueryPlanCache()

Method Details

get

public @Nullable QueryOptimizer.OptimizedQueryPlan get(String normalizedSql)

put

public void put(String normalizedSql,
 QueryOptimizer.OptimizedQueryPlan optimizedPlan)

invalidate

public void invalidate(String normalizedSql)

invalidateAll

public void invalidateAll()

size

public int size()

getHits

public long getHits()

getMisses

public long getMisses()

getHitRate

public double getHitRate()