org.springframework.batch.core.Job Maven / Gradle / Ivy
/*
* Copyright 2006-2018 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;
/**
* Batch domain object representing a job. Job is an explicit abstraction
* representing the configuration of a job specified by a developer. It should
* be noted that restart policy is applied to the job as a whole and not to a
* step.
*
* @author Dave Syer
* @author Mahmoud Ben Hassine
*/
public interface Job {
String getName();
/**
* Flag to indicate if this job can be restarted, at least in principle.
*
* @return true if this job can be restarted after a failure
*/
boolean isRestartable();
/**
* Run the {@link JobExecution} and update the meta information like status
* and statistics as necessary. This method should not throw any exceptions
* for failed execution. Clients should be careful to inspect the
* {@link JobExecution} status to determine success or failure.
*
* @param execution a {@link JobExecution}
*/
void execute(JobExecution execution);
/**
* If clients need to generate new parameters for the next execution in a
* sequence they can use this incrementer. The return value may be {@code null},
* in the case that this job does not have a natural sequence.
*
* @return in incrementer to be used for creating new parameters
*/
@Nullable
JobParametersIncrementer getJobParametersIncrementer();
/**
* A validator for the job parameters of a {@link JobExecution}. Clients of
* a Job may need to validate the parameters for a launch, before or during
* the execution.
*
* @return a validator that can be used to check parameter values (never
* {@code null})
*/
JobParametersValidator getJobParametersValidator();
}