com.easycodebox.common.jpa

枚举 FlushModeType

java.lang.Object

java.lang.Enum<FlushModeType>

com.easycodebox.common.jpa.FlushModeType

所有已实现的接口:

Serializable, Comparable<FlushModeType>

public enum FlushModeType
extends Enum<FlushModeType>

Flush mode setting.

When queries are executed within a transaction, if FlushModeType.AUTO is set on the Query object, or if the flush mode setting for the persistence context is AUTO (the default) and a flush mode setting has not been specified for the Query object, the persistence provider is responsible for ensuring that all updates to the state of all entities in the persistence context which could potentially affect the result of the query are visible to the processing of the query. The persistence provider implementation may achieve this by flushing those entities to the database or by some other means. If FlushModeType.COMMIT is set, the effect of updates made to entities in the persistence context upon queries is unspecified.

If there is no transaction active, the persistence provider must not flush to the database.

从以下版本开始:

Java Persistence 1.0

枚举常量概要

枚举常量

枚举常量和说明
AUTO (Default) Flushing to occur at query execution
COMMIT Flushing must occur only at transaction commit

方法概要

限定符和类型	方法和说明
static FlushModeType	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static FlushModeType[]	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

COMMIT

public static final FlushModeType COMMIT

Flushing must occur only at transaction commit

AUTO

public static final FlushModeType AUTO

(Default) Flushing to occur at query execution

方法详细资料

values

public static FlushModeType[] 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 (FlushModeType c : FlushModeType.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 FlushModeType 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