spring-batch JobExecutionDecider 源码
spring-batch JobExecutionDecider 代码
文件路径：/spring-batch-core/src/main/java/org/springframework/batch/core/job/flow/JobExecutionDecider.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.job.flow;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.StepExecution;
import org.springframework.lang.Nullable;
/**
* Interface allowing for programmatic access to the decision on what the status of a flow
* should be. For example, if some condition that's stored in the database indicates that
* the job should stop for a manual check, a decider implementation could check that value
* to determine the status of the flow.
*
* @author Dave Syer
* @author Mahmoud Ben Hassine
* @author Taeik Lim
* @since 2.0
*/
@FunctionalInterface
public interface JobExecutionDecider {
/**
* Strategy for branching an execution based on the state of an ongoing
* {@link JobExecution}. The return value will be used as a status to determine the
* next step in the job.
* @param jobExecution a job execution
* @param stepExecution the latest step execution (may be {@code null})
* @return the exit status code
*/
FlowExecutionStatus decide(JobExecution jobExecution, @Nullable StepExecution stepExecution);
}
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