spring-batch CompletionPolicy 源码
spring-batch CompletionPolicy 代码
文件路径：/spring-batch-infrastructure/src/main/java/org/springframework/batch/repeat/CompletionPolicy.java
/*
* Copyright 2006-2007 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.batch.repeat;
/**
* Interface for batch completion policies, to enable batch operations to strategise
* normal completion conditions. Stateful implementations of batch iterators should
* <em>only</em> update state using the update method. If you need custom behaviour
* consider extending an existing implementation or using the composite provided.
*
* @author Dave Syer
*
*/
public interface CompletionPolicy {
/**
* Determine whether a batch is complete given the latest result from the callback. If
* this method returns true then {@link #isComplete(RepeatContext)} should also (but
* not necessarily vice versa, since the answer here depends on the result).
* @param context the current batch context.
* @param result the result of the latest batch item processing.
* @return true if the batch should terminate.
*
* @see #isComplete(RepeatContext)
*/
boolean isComplete(RepeatContext context, RepeatStatus result);
/**
* Allow policy to signal completion according to internal state, without having to
* wait for the callback to complete.
* @param context the current batch context.
* @return true if the batch should terminate.
*/
boolean isComplete(RepeatContext context);
/**
* Create a new context for the execution of a batch. N.B. implementations should
* <em>not</em> return the parent from this method - they must create a new context to
* meet the specific needs of the policy. The best way to do this might be to override
* an existing implementation and use the {@link RepeatContext} to store state in its
* attributes.
* @param parent the current context if one is already in progress.
* @return a context object that can be used by the implementation to store internal
* state for a batch.
*/
RepeatContext start(RepeatContext parent);
/**
* Give implementations the opportunity to update the state of the current batch. Will
* be called <em>once</em> per callback, after it has been launched, but not
* necessarily after it completes (if the batch is asynchronous).
* @param context the value returned by start.
*/
void update(RepeatContext context);
}
相关信息
相关文章
spring-batch RepeatCallback 源码
spring-batch RepeatException 源码
spring-batch RepeatListener 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦