程序包 org.hibernate

枚举 CacheMode

java.lang.Object

java.lang.Enum<CacheMode>

org.hibernate.CacheMode

所有已实现的接口:

Serializable, Comparable<CacheMode>

public enum CacheMode
extends Enum<CacheMode>

Controls how the session interacts with the second-level cache and query cache.

作者:

Gavin King, Strong Liu

另请参阅:

Session.setCacheMode(CacheMode)

枚举常量概要

枚举常量

枚举常量	说明
GET	The session may read items from the cache, but will not add items, except to invalidate items when updates occur.
IGNORE	The session will never interact with the cache, except to invalidate cache items when updates occur.
NORMAL	The session may read items from the cache, and add items to the cache.
PUT	The session will never read items from the cache, but will add items to the cache as it reads them from the database.
REFRESH	The session will never read items from the cache, but will add items to the cache as it reads them from the database.

方法概要

修饰符和类型	方法	说明
static CacheMode	interpretExternalSetting(String setting)	Used to interpret externalized forms of this enum.
boolean	isGetEnabled()	Does this cache mode indicate that reads are allowed?
boolean	isPutEnabled()	Does this cache mode indicate that writes are allowed?
static CacheMode	valueOf(String name)	返回带有指定名称的该类型的枚举常量。
static CacheMode[]	values()	按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

NORMAL

public static final CacheMode NORMAL

The session may read items from the cache, and add items to the cache.

IGNORE

public static final CacheMode IGNORE

The session will never interact with the cache, except to invalidate cache items when updates occur.

GET

public static final CacheMode GET

The session may read items from the cache, but will not add items, except to invalidate items when updates occur.

PUT

public static final CacheMode PUT

The session will never read items from the cache, but will add items to the cache as it reads them from the database.

REFRESH

public static final CacheMode REFRESH

The session will never read items from the cache, but will add items to the cache as it reads them from the database. In this mode, the effect of hibernate.cache.use_minimal_puts is bypassed, in order to force a cache refresh.

方法详细资料

values

public static CacheMode[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (CacheMode c : CacheMode.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static CacheMode valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

isGetEnabled

public boolean isGetEnabled()

Does this cache mode indicate that reads are allowed?

返回:

true if cache reads are allowed; false otherwise.

isPutEnabled

public boolean isPutEnabled()

Does this cache mode indicate that writes are allowed?

返回:

true if cache writes are allowed; false otherwise.

interpretExternalSetting

public static CacheMode interpretExternalSetting(String setting)

Used to interpret externalized forms of this enum.

参数:

setting - The externalized form.

返回:

The matching enum value.

抛出:

MappingException - Indicates the external form was not recognized as a valid enum value.