程序包 org.apache.pulsar.common.policies.data

Enum Class SchemaAutoUpdateCompatibilityStrategy

java.lang.Object

java.lang.Enum<SchemaAutoUpdateCompatibilityStrategy>

org.apache.pulsar.common.policies.data.SchemaAutoUpdateCompatibilityStrategy

所有已实现的接口:

Serializable, Comparable<SchemaAutoUpdateCompatibilityStrategy>, Constable

public enum SchemaAutoUpdateCompatibilityStrategy
extends Enum<SchemaAutoUpdateCompatibilityStrategy>

Strategy to use when checking an auto-updated schema for compatibility to the current schema.

嵌套类概要

从类继承的嵌套类/接口 java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

枚举常量概要

枚举常量

枚举常量	说明
AlwaysCompatible	Always Compatible - The new schema will not be checked for compatibility against old schemas.
AutoUpdateDisabled	Don't allow any auto updates.
Backward	Messages written in the previous schema can be read by the new schema.
BackwardTransitive	Be similar to Backward.
Forward	Messages written in the new schema can be read by the previous schema.
ForwardTransitive	Be similar to Forward, ForwardTransitive ensure new schema can be ready by all previous version schema.
Full	Backward and Forward.
FullTransitive	BackwardTransitive and ForwardTransitive.

方法概要

修饰符和类型	方法	说明
static SchemaAutoUpdateCompatibilityStrategy	valueOf(String name)	Returns the enum constant of this class with the specified name.
static SchemaAutoUpdateCompatibilityStrategy[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

从类继承的方法 java.lang.Enum

clone, compareTo, describeConstable, 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

AutoUpdateDisabled

public static final SchemaAutoUpdateCompatibilityStrategy AutoUpdateDisabled

Don't allow any auto updates.

Backward

public static final SchemaAutoUpdateCompatibilityStrategy Backward

Messages written in the previous schema can be read by the new schema. To be backward compatible, the new schema must not add any new fields that don't have default values. However, it may remove fields.

Forward

public static final SchemaAutoUpdateCompatibilityStrategy Forward

Messages written in the new schema can be read by the previous schema. To be forward compatible, the new schema must not remove any fields which don't have default values in the previous schema. However, it may add new fields.

Full

public static final SchemaAutoUpdateCompatibilityStrategy Full

Backward and Forward.

AlwaysCompatible

public static final SchemaAutoUpdateCompatibilityStrategy AlwaysCompatible

Always Compatible - The new schema will not be checked for compatibility against old schemas. In other words, new schemas will always be marked assumed compatible.

BackwardTransitive

public static final SchemaAutoUpdateCompatibilityStrategy BackwardTransitive

Be similar to Backward. BackwardTransitive ensure all previous version schema can be read by the new schema.

ForwardTransitive

public static final SchemaAutoUpdateCompatibilityStrategy ForwardTransitive

Be similar to Forward, ForwardTransitive ensure new schema can be ready by all previous version schema.

FullTransitive

public static final SchemaAutoUpdateCompatibilityStrategy FullTransitive

BackwardTransitive and ForwardTransitive.

方法详细资料

values

public static SchemaAutoUpdateCompatibilityStrategy[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

返回:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static SchemaAutoUpdateCompatibilityStrategy valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

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 - if this enum class has no constant with the specified name

NullPointerException - 如果参数为空值