类 CountingCompletionPolicy

字段详细资料

• COUNT

  public static final java.lang.String COUNT

  Session key for global counter.

构造器详细资料

• CountingCompletionPolicy

  public CountingCompletionPolicy()

方法详细资料

• setUseParent

  public void setUseParent​(boolean useParent)

  Flag to indicate whether the count is at the level of the parent context, or just local to the context. If true then the count is aggregated among siblings in a nested batch.

  参数:

  useParent - whether to use the parent context to cache the total count. Default value is false.

• setMaxCount

  public void setMaxCount​(int maxCount)

  Setter for maximum value of count before termination.

  参数:

  maxCount - the maximum number of counts before termination. Default 0 so termination is immediate.

• getCount

  protected abstract int getCount​(RepeatContext context)

  Extension point for subclasses. Obtain the value of the count in the current context. Subclasses can count the number of attempts or violations and store the result in their context. This policy base class will take care of the termination contract and aggregating at the level of the session if required.

  参数:

  context - the current context, specific to the subclass.

  返回:

  the value of the counter in the context.

• doUpdate

  protected int doUpdate​(RepeatContext context)

  Extension point for subclasses. Inspect the context and update the state of a counter in whatever way is appropriate. This will be added to the session-level counter if setUseParent(boolean) is true.

  参数:

  context - the current context.

  返回:

  the change in the value of the counter (default 0).

• isComplete

  public final boolean isComplete​(RepeatContext context)

  从类复制的说明: DefaultResultCompletionPolicy
  Always false.

  指定者:

  isComplete 在接口中 CompletionPolicy

  覆盖:

  isComplete 在类中 DefaultResultCompletionPolicy

  参数:

  context - the current batch context.

  返回:

  true if the batch should terminate.

  另请参阅:

  CompletionPolicy.isComplete(org.springframework.batch.repeat.RepeatContext)

• start

  public RepeatContext start​(RepeatContext parent)

  从类复制的说明: CompletionPolicySupport
  Build a new RepeatContextSupport and return it.

  指定者:

  start 在接口中 CompletionPolicy

  覆盖:

  start 在类中 CompletionPolicySupport

  参数:

  parent - the current context if one is already in progress.

  返回:

  a context object that can be used by the implementation to store internal state for a batch.

  另请参阅:

  CompletionPolicy.start(RepeatContext)

• update

  public final void update​(RepeatContext context)

  从类复制的说明: CompletionPolicySupport
  Increment the context so the counter is up to date. Do nothing else.

  指定者:

  update 在接口中 CompletionPolicy

  覆盖:

  update 在类中 CompletionPolicySupport

  参数:

  context - the value returned by start.

  另请参阅:

  CompletionPolicy.update(org.springframework.batch.repeat.RepeatContext)