程序包 org.hibernate

枚举 ReplicationMode

java.lang.Object

java.lang.Enum<ReplicationMode>

org.hibernate.ReplicationMode

所有已实现的接口:

Serializable, Comparable<ReplicationMode>

public enum ReplicationMode
extends Enum<ReplicationMode>

Represents a replication strategy.

作者:

Gavin King

另请参阅:

Session.replicate(Object, ReplicationMode)

枚举常量概要

枚举常量

枚举常量	说明
EXCEPTION	Throw an exception when a row already exists.
IGNORE	Ignore replicated entities when a row already exists.
LATEST_VERSION	When a row already exists, choose the latest version.
OVERWRITE	Overwrite existing rows when a row already exists.

方法概要

修饰符和类型	方法	说明
abstract boolean	shouldOverwriteCurrentVersion(Object entity, Object currentVersion, Object newVersion, VersionType versionType)	Determine whether the mode dictates that the data being replicated should overwrite the data found.
static ReplicationMode	valueOf(String name)	返回带有指定名称的该类型的枚举常量。
static ReplicationMode[]	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

EXCEPTION

public static final ReplicationMode EXCEPTION

Throw an exception when a row already exists.

IGNORE

public static final ReplicationMode IGNORE

Ignore replicated entities when a row already exists.

OVERWRITE

public static final ReplicationMode OVERWRITE

Overwrite existing rows when a row already exists.

LATEST_VERSION

public static final ReplicationMode LATEST_VERSION

When a row already exists, choose the latest version.

方法详细资料

values

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

shouldOverwriteCurrentVersion

public abstract boolean shouldOverwriteCurrentVersion(Object entity,
                                                      Object currentVersion,
                                                      Object newVersion,
                                                      VersionType versionType)

Determine whether the mode dictates that the data being replicated should overwrite the data found.

参数:

entity - The entity being replicated

currentVersion - The version currently on the target database table.

newVersion - The replicating version

versionType - The version type

返回:

true indicates the data should be overwritten; false indicates it should not.