spring-batch CompletionPolicySupport 源码
spring-batch CompletionPolicySupport 代码
文件路径：/spring-batch-infrastructure/src/main/java/org/springframework/batch/repeat/policy/CompletionPolicySupport.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.policy;
import org.springframework.batch.repeat.CompletionPolicy;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.batch.repeat.RepeatContext;
import org.springframework.batch.repeat.context.RepeatContextSupport;
/**
* Very simple base class for {@link CompletionPolicy} implementations.
*
* @author Dave Syer
*
*/
public class CompletionPolicySupport implements CompletionPolicy {
/**
* If exit status is not continuable return <code>true</code>, otherwise delegate to
* {@link #isComplete(RepeatContext)}.
*
* @see org.springframework.batch.repeat.CompletionPolicy#isComplete(org.springframework.batch.repeat.RepeatContext,
* RepeatStatus)
*/
@Override
public boolean isComplete(RepeatContext context, RepeatStatus result) {
if (result != null && !result.isContinuable()) {
return true;
}
else {
return isComplete(context);
}
}
/**
* Always true.
*
* @see org.springframework.batch.repeat.CompletionPolicy#isComplete(org.springframework.batch.repeat.RepeatContext)
*/
@Override
public boolean isComplete(RepeatContext context) {
return true;
}
/**
* Build a new {@link RepeatContextSupport} and return it.
*
* @see org.springframework.batch.repeat.CompletionPolicy#start(RepeatContext)
*/
@Override
public RepeatContext start(RepeatContext context) {
return new RepeatContextSupport(context);
}
/**
* Increment the context so the counter is up to date. Do nothing else.
*
* @see org.springframework.batch.repeat.CompletionPolicy#update(org.springframework.batch.repeat.RepeatContext)
*/
@Override
public void update(RepeatContext context) {
if (context instanceof RepeatContextSupport) {
((RepeatContextSupport) context).increment();
}
}
}
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