spring-batch StepExecutionListener 源码
spring-batch StepExecutionListener 代码
文件路径：/spring-batch-core/src/main/java/org/springframework/batch/core/StepExecutionListener.java
/*
* Copyright 2006-2022 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.core;
import org.springframework.lang.Nullable;
/**
* Listener interface for the lifecycle of a {@link Step}.
*
* @author Lucas Ward
* @author Dave Syer
* @author Mahmoud Ben Hassine
* @author Parikshit Dutta
*/
public interface StepExecutionListener extends StepListener {
/**
* Initialize the state of the listener with the {@link StepExecution} from the
* current scope.
* @param stepExecution instance of {@link StepExecution}.
*/
default void beforeStep(StepExecution stepExecution) {
}
/**
* Give a listener a chance to modify the exit status from a step. The value returned
* is combined with the normal exit status by using
* {@link ExitStatus#and(ExitStatus)}.
*
* Called after execution of the step's processing logic (whether successful or
* failed). Throwing an exception in this method has no effect, as it is only logged.
* @param stepExecution a {@link StepExecution} instance.
* @return an {@link ExitStatus} to combine with the normal value. Return {@code null}
* (the default) to leave the old value unchanged.
*/
@Nullable
default ExitStatus afterStep(StepExecution stepExecution) {
return null;
}
}
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