程序包 org.hibernate.cache.spi.support

类 AbstractReadWriteAccess

java.lang.Object

org.hibernate.cache.spi.support.AbstractCachedDomainDataAccess

org.hibernate.cache.spi.support.AbstractReadWriteAccess

所有已实现的接口:

CachedDomainDataAccess, AbstractDomainDataRegion.Destructible

直接已知子类:

CollectionReadWriteAccess, EntityReadWriteAccess, NaturalIdReadWriteAccess

public abstract class AbstractReadWriteAccess
extends AbstractCachedDomainDataAccess

作者:

Steve Ebersole

嵌套类概要

嵌套类

修饰符和类型	类	说明
static class	AbstractReadWriteAccess.Item	Wrapper type representing unlocked items.
static interface	AbstractReadWriteAccess.Lockable	Interface type implemented by all wrapper objects in the cache.
static class	AbstractReadWriteAccess.SoftLockImpl	Wrapper type representing locked items.

构造器概要

构造器

限定符	构造器	说明
protected	AbstractReadWriteAccess(DomainDataRegion domainDataRegion, DomainDataStorageAccess storageAccess)

方法概要

修饰符和类型	方法	说明
protected void	decrementLock(SharedSessionContractImplementor session, Object key, AbstractReadWriteAccess.SoftLockImpl lock)
Object	get(SharedSessionContractImplementor session, Object key)	Returns null if the item is not readable.
protected abstract AccessedDataClassification	getAccessedDataClassification()
protected abstract Comparator	getVersionComparator()
protected void	handleLockExpiry(SharedSessionContractImplementor session, Object key, AbstractReadWriteAccess.Lockable lock)
SoftLock	lockItem(SharedSessionContractImplementor session, Object key, Object version)	We are going to attempt to update/delete the keyed object.
protected long	nextLockId()
boolean	putFromLoad(SharedSessionContractImplementor session, Object key, Object value, Object version)	Attempt to cache an object, afterQuery loading from the database.
boolean	putFromLoad(SharedSessionContractImplementor session, Object key, Object value, Object version, boolean minimalPutOverride)	Attempt to cache an object, afterQuery loading from the database, explicitly specifying the minimalPut behavior.
protected Lock	readLock()
void	remove(SharedSessionContractImplementor session, Object key)	Called afterQuery an item has become stale (beforeQuery the transaction completes).
void	removeAll(SharedSessionContractImplementor session)	Remove all data for this accessed type
void	unlockItem(SharedSessionContractImplementor session, Object key, SoftLock lock)	Called when we have finished the attempted update/delete (which may or may not have been successful), after transaction completion.
protected UUID	uuid()
protected Lock	writeLock()

从类继承的方法 org.hibernate.cache.spi.support.AbstractCachedDomainDataAccess

clearCache, contains, destroy, evict, evictAll, getRegion, getStorageAccess, lockRegion, unlockRegion

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.hibernate.cache.spi.access.CachedDomainDataAccess

getAccessType

构造器详细资料

AbstractReadWriteAccess

protected AbstractReadWriteAccess(DomainDataRegion domainDataRegion,
                                  DomainDataStorageAccess storageAccess)

方法详细资料

getVersionComparator

protected abstract Comparator getVersionComparator()

uuid

protected UUID uuid()

nextLockId

protected long nextLockId()

readLock

protected Lock readLock()

writeLock

protected Lock writeLock()

get

public Object get(SharedSessionContractImplementor session,
                  Object key)

Returns null if the item is not readable. Locked items are not readable, nor are items created afterQuery the start of this transaction.

指定者:

get 在接口中 CachedDomainDataAccess

覆盖:

get 在类中 AbstractCachedDomainDataAccess

参数:

session - Current session.

key - The key of the item to be retrieved.

返回:

the cached data or null

putFromLoad

public boolean putFromLoad(SharedSessionContractImplementor session,
                           Object key,
                           Object value,
                           Object version)

从接口复制的说明: CachedDomainDataAccess

Attempt to cache an object, afterQuery loading from the database.

指定者:

putFromLoad 在接口中 CachedDomainDataAccess

覆盖:

putFromLoad 在类中 AbstractCachedDomainDataAccess

参数:

session - Current session.

key - The item key

value - The item

version - the item version number

返回:

true if the object was successfully cached

getAccessedDataClassification

protected abstract AccessedDataClassification getAccessedDataClassification()

putFromLoad

public final boolean putFromLoad(SharedSessionContractImplementor session,
                                 Object key,
                                 Object value,
                                 Object version,
                                 boolean minimalPutOverride)

从接口复制的说明: CachedDomainDataAccess

Attempt to cache an object, afterQuery loading from the database, explicitly specifying the minimalPut behavior.

指定者:

putFromLoad 在接口中 CachedDomainDataAccess

覆盖:

putFromLoad 在类中 AbstractCachedDomainDataAccess

参数:

session - Current session.

key - The item key

value - The item

version - the item version number

minimalPutOverride - Explicit minimalPut flag

返回:

true if the object was successfully cached

lockItem

public SoftLock lockItem(SharedSessionContractImplementor session,
                         Object key,
                         Object version)

从接口复制的说明: CachedDomainDataAccess

We are going to attempt to update/delete the keyed object. This method is used by "asynchronous" concurrency strategies.

The returned object must be passed back to CachedDomainDataAccess.unlockItem(org.hibernate.engine.spi.SharedSessionContractImplementor, java.lang.Object, org.hibernate.cache.spi.access.SoftLock), to release the lock. Concurrency strategies which do not support client-visible locks may silently return null.

参数:

session - Current session.

key - The key of the item to lock

version - The item's current version value

返回:

A representation of our lock on the item; or null.

unlockItem

public void unlockItem(SharedSessionContractImplementor session,
                       Object key,
                       SoftLock lock)

从接口复制的说明: CachedDomainDataAccess

Called when we have finished the attempted update/delete (which may or may not have been successful), after transaction completion. This method is used by "asynchronous" concurrency strategies.

参数:

session - Current session.

key - The item key

lock - The lock previously obtained from CachedDomainDataAccess.lockItem(org.hibernate.engine.spi.SharedSessionContractImplementor, java.lang.Object, java.lang.Object)

decrementLock

protected void decrementLock(SharedSessionContractImplementor session,
                             Object key,
                             AbstractReadWriteAccess.SoftLockImpl lock)

handleLockExpiry

protected void handleLockExpiry(SharedSessionContractImplementor session,
                                Object key,
                                AbstractReadWriteAccess.Lockable lock)

remove

public void remove(SharedSessionContractImplementor session,
                   Object key)

从接口复制的说明: CachedDomainDataAccess

Called afterQuery an item has become stale (beforeQuery the transaction completes). This method is used by "synchronous" concurrency strategies.

指定者:

remove 在接口中 CachedDomainDataAccess

覆盖:

remove 在类中 AbstractCachedDomainDataAccess

参数:

session - Current session.

key - The key of the item to remove

removeAll

public void removeAll(SharedSessionContractImplementor session)

从接口复制的说明: CachedDomainDataAccess

Remove all data for this accessed type

指定者:

removeAll 在接口中 CachedDomainDataAccess

覆盖:

removeAll 在类中 AbstractCachedDomainDataAccess