spring-batch JobKeyGenerator 源码
spring-batch JobKeyGenerator 代码
文件路径：/spring-batch-core/src/main/java/org/springframework/batch/core/JobKeyGenerator.java
/*
* Copyright 2013-2022 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;
/**
* Strategy interface for the generation of the key used in identifying unique
* {@link JobInstance} objects.
*
* @author Michael Minella
* @author Mahmoud Ben Hassine
* @param <T> The type of the source data used to calculate the key.
* @since 2.2
*/
public interface JobKeyGenerator<T> {
/**
* Method to generate the unique key used to identify a job instance.
* @param source Source information used to generate the key (must not be
* {@code null}).
* @return a unique string identifying the job based on the information supplied.
*/
String generateKey(T source);
}
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