java.lang.Object
- java.lang.Enum<SchemaCompatibilityStrategy>
- - org.apache.pulsar.common.policies.data.SchemaCompatibilityStrategy

所有已实现的接口:

java.io.Serializable, java.lang.Comparable<SchemaCompatibilityStrategy>
```
public enum SchemaCompatibilityStrategy
extends java.lang.Enum<SchemaCompatibilityStrategy>
```
Pulsar Schema compatibility strategy.

枚举常量概要

枚举常量
枚举常量	说明
`ALWAYS_COMPATIBLE`	Always compatible.
`ALWAYS_INCOMPATIBLE`	Always incompatible.
`BACKWARD`	Messages written by an old schema can be read by a new schema.
`BACKWARD_TRANSITIVE`	Be similar to BACKWARD, BACKWARD_TRANSITIVE ensure all previous version schema can be read by the new schema.
`FORWARD`	Messages written by a new schema can be read by an old schema.
`FORWARD_TRANSITIVE`	Be similar to FORWARD, FORWARD_TRANSITIVE ensure new schema can be ready by all previous version schema.
`FULL`	Equivalent to both FORWARD and BACKWARD.
`FULL_TRANSITIVE`	Equivalent to both FORWARD_TRANSITIVE and BACKWARD_TRANSITIVE.
`UNDEFINED`	Undefined.

方法概要

所有方法静态方法具体方法
修饰符和类型	方法	说明
`static SchemaCompatibilityStrategy`	`fromAutoUpdatePolicy(SchemaAutoUpdateCompatibilityStrategy strategy)`
`static boolean`	`isUndefined(SchemaCompatibilityStrategy strategy)`
`static SchemaCompatibilityStrategy`	`valueOf(java.lang.String name)`	返回带有指定名称的该类型的枚举常量。
`static SchemaCompatibilityStrategy[]`	`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
  - UNDEFINED
```
public static final SchemaCompatibilityStrategy UNDEFINED
```
    Undefined.
  - ALWAYS_INCOMPATIBLE
```
public static final SchemaCompatibilityStrategy ALWAYS_INCOMPATIBLE
```
    Always incompatible.
  - ALWAYS_COMPATIBLE
```
public static final SchemaCompatibilityStrategy ALWAYS_COMPATIBLE
```
    Always compatible.
  - BACKWARD
```
public static final SchemaCompatibilityStrategy BACKWARD
```
    Messages written by an old schema can be read by a new schema.
  - FORWARD
```
public static final SchemaCompatibilityStrategy FORWARD
```
    Messages written by a new schema can be read by an old schema.
  - FULL
```
public static final SchemaCompatibilityStrategy FULL
```
    Equivalent to both FORWARD and BACKWARD.
  - BACKWARD_TRANSITIVE
```
public static final SchemaCompatibilityStrategy BACKWARD_TRANSITIVE
```
    Be similar to BACKWARD, BACKWARD_TRANSITIVE ensure all previous version schema can be read by the new schema.
  - FORWARD_TRANSITIVE
```
public static final SchemaCompatibilityStrategy FORWARD_TRANSITIVE
```
    Be similar to FORWARD, FORWARD_TRANSITIVE ensure new schema can be ready by all previous version schema.
  - FULL_TRANSITIVE
```
public static final SchemaCompatibilityStrategy FULL_TRANSITIVE
```
    Equivalent to both FORWARD_TRANSITIVE and BACKWARD_TRANSITIVE.
- 方法详细资料
  - values
```
public static SchemaCompatibilityStrategy[] 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 (SchemaCompatibilityStrategy c : SchemaCompatibilityStrategy.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 SchemaCompatibilityStrategy valueOf(java.lang.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:
    
    java.lang.IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量
    
    java.lang.NullPointerException - 如果参数为空值
  - isUndefined
```
public static boolean isUndefined(SchemaCompatibilityStrategy strategy)
```
  - fromAutoUpdatePolicy
```
public static SchemaCompatibilityStrategy fromAutoUpdatePolicy(SchemaAutoUpdateCompatibilityStrategy strategy)
```

枚举 SchemaCompatibilityStrategy

枚举常量概要

方法概要

从类继承的方法 java.lang.Enum

从类继承的方法 java.lang.Object

枚举常量详细资料

UNDEFINED

ALWAYS_INCOMPATIBLE

ALWAYS_COMPATIBLE

BACKWARD

FORWARD

FULL

BACKWARD_TRANSITIVE

FORWARD_TRANSITIVE

FULL_TRANSITIVE

方法详细资料

values

valueOf

isUndefined

fromAutoUpdatePolicy