Package org.mariadb.jdbc.client.impl

Class PrepareCache

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<java.lang.String,CachedPrepareResultPacket>

org.mariadb.jdbc.client.impl.PrepareCache

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.String,CachedPrepareResultPacket>, PrepareCache

public final class PrepareCache
extends java.util.LinkedHashMap<java.lang.String,CachedPrepareResultPacket>
implements PrepareCache

LRU prepare cache

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,V extends java.lang.Object>

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K extends java.lang.Object,V extends java.lang.Object>

Field Summary

Fields

Modifier and Type	Field	Description
private StandardClient	con	client
private int	maxSize	cache maximum size
private static long	serialVersionUID

Constructor Summary

Constructors

Constructor	Description
PrepareCache(int size, StandardClient con)	LRU prepare cache constructor

Method Summary

Modifier and Type	Method	Description
CachedPrepareResultPacket	get(java.lang.Object key)
Prepare	get(java.lang.String key, BasePreparedStatement preparedStatement)	Get cache value for key
Prepare	put(java.lang.String key, Prepare result, BasePreparedStatement preparedStatement)	Add a prepare cache value
CachedPrepareResultPacket	put(java.lang.String key, PrepareResultPacket result)	NOT USED
boolean	removeEldestEntry(java.util.Map.Entry<java.lang.String,CachedPrepareResultPacket> eldest)
void	reset()	Reset cache

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, getOrDefault, keySet, replaceAll, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

maxSize

private final int maxSize

cache maximum size

con

private final transient StandardClient con

client

Constructor Detail

PrepareCache

public PrepareCache(int size,
                    StandardClient con)

LRU prepare cache constructor

Parameters:

size - cache size

con - client

Method Detail

removeEldestEntry

public boolean removeEldestEntry(java.util.Map.Entry<java.lang.String,CachedPrepareResultPacket> eldest)

Overrides:

removeEldestEntry in class java.util.LinkedHashMap<java.lang.String,CachedPrepareResultPacket>

get

public Prepare get(java.lang.String key,
                   BasePreparedStatement preparedStatement)

Description copied from interface: PrepareCache

Get cache value for key

Specified by:

get in interface PrepareCache

Parameters:

key - key

preparedStatement - prepared statement

Returns:

Prepare value

put

public Prepare put(java.lang.String key,
                   Prepare result,
                   BasePreparedStatement preparedStatement)

Description copied from interface: PrepareCache

Add a prepare cache value

Specified by:

put in interface PrepareCache

Parameters:

key - key

result - value

preparedStatement - prepared statement

Returns:

Prepare if was already cached

get

public CachedPrepareResultPacket get(java.lang.Object key)

Specified by:

get in interface java.util.Map<java.lang.String,CachedPrepareResultPacket>

Overrides:

get in class java.util.LinkedHashMap<java.lang.String,CachedPrepareResultPacket>

put

public CachedPrepareResultPacket put(java.lang.String key,
                                     PrepareResultPacket result)

NOT USED

Parameters:

key - key

result - results

Returns:

will throw an exception

reset

public void reset()

Description copied from interface: PrepareCache

Reset cache

Specified by:

reset in interface PrepareCache