RepeatSynchronizationManager (Spring Batch 4.1.4.RELEASE API)

java.lang.Object
- org.springframework.batch.repeat.support.RepeatSynchronizationManager

```
public final class RepeatSynchronizationManager
extends java.lang.Object
```
Global variable support for repeat clients. Normally it is not necessary for clients to be aware of the surrounding environment because a RepeatCallback can always use the context it is passed by the enclosing RepeatOperations. But occasionally it might be helpful to have lower level access to the ongoing RepeatContext so we provide a global accessor here. The mutator methods (clear() and register(RepeatContext) should not be used except internally by RepeatOperations implementations.
作者:
Dave Syer

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 RepeatContext`	`clear()`	Clear the current context at the end of a batch - should only be used by `RepeatOperations` implementations.
`static RepeatContext`	`getContext()`	Getter for the current context.
`static RepeatContext`	`register(RepeatContext context)`	Method for registering a context - should only be used by `RepeatOperations` implementations to ensure that `getContext()` always returns the correct value.
`static void`	`setAncestorsCompleteOnly()`	Set current session and all ancestors (via parent) to complete
`static void`	`setCompleteOnly()`	Convenience method to set the current repeat operation to complete if it exists.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 方法详细资料
  - getContext
```
public static RepeatContext getContext()
```
    Getter for the current context. A context is shared by all items in the batch, so this method is intended to return the same context object independent of whether the callback is running synchronously or asynchronously with the surrounding RepeatOperations.
    返回:
    the current RepeatContext or null if there is none (if we are not in a batch).
  - setCompleteOnly
```
public static void setCompleteOnly()
```
    Convenience method to set the current repeat operation to complete if it exists.
  - register
```
public static RepeatContext register(RepeatContext context)
```
    Method for registering a context - should only be used by RepeatOperations implementations to ensure that getContext() always returns the correct value.
    参数:
    context - a new context at the start of a batch.
    返回:
    the old value if there was one.
  - clear
```
public static RepeatContext clear()
```
    Clear the current context at the end of a batch - should only be used by RepeatOperations implementations.
    返回:
    the old value if there was one.
  - setAncestorsCompleteOnly
```
public static void setAncestorsCompleteOnly()
```
    Set current session and all ancestors (via parent) to complete.,