org.springframework.batch.core.launch.JobLauncher Maven / Gradle / Ivy
/*
* 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.core.launch;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.JobParametersInvalidException;
import org.springframework.batch.core.repository.JobExecutionAlreadyRunningException;
import org.springframework.batch.core.repository.JobInstanceAlreadyCompleteException;
import org.springframework.batch.core.repository.JobRestartException;
/**
* Simple interface for controlling jobs, including possible ad-hoc executions,
* based on different runtime identifiers. It is extremely important to note
* that this interface makes absolutely no guarantees about whether or not calls
* to it are executed synchronously or asynchronously. The javadocs for specific
* implementations should be checked to ensure callers fully understand how the
* job will be run.
*
* @author Lucas Ward
* @author Dave Syer
*/
public interface JobLauncher {
/**
* Start a job execution for the given {@link Job} and {@link JobParameters}
* . If a {@link JobExecution} was able to be created successfully, it will
* always be returned by this method, regardless of whether or not the
* execution was successful. If there is a past {@link JobExecution} which
* has paused, the same {@link JobExecution} is returned instead of a new
* one created. A exception will only be thrown if there is a failure to
* start the job. If the job encounters some error while processing, the
* JobExecution will be returned, and the status will need to be inspected.
*
* @param job the job to be executed.
* @param jobParameters the parameters passed to this execution of the job.
* @return the {@link JobExecution} if it returns synchronously. If the
* implementation is asynchronous, the status might well be unknown.
*
* @throws JobExecutionAlreadyRunningException if the JobInstance identified
* by the properties already has an execution running.
* @throws IllegalArgumentException if the job or jobInstanceProperties are
* null.
* @throws JobRestartException if the job has been run before and
* circumstances that preclude a re-start.
* @throws JobInstanceAlreadyCompleteException if the job has been run
* before with the same parameters and completed successfully
* @throws JobParametersInvalidException if the parameters are not valid for
* this job
*/
public JobExecution run(Job job, JobParameters jobParameters) throws JobExecutionAlreadyRunningException,
JobRestartException, JobInstanceAlreadyCompleteException, JobParametersInvalidException;
}