Java tutorial
/* * 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.repository.dao; import java.util.List; import java.util.Set; import org.springframework.batch.core.JobExecution; import org.springframework.batch.core.JobInstance; import org.springframework.lang.Nullable; /** * Data Access Object for job executions. * * @author Lucas Ward * @author Robert Kasanicky * @author Mahmoud Ben Hassine */ public interface JobExecutionDao { /** * Save a new JobExecution. * * Preconditions: jobInstance the jobExecution belongs to must have a * jobInstanceId. * * @param jobExecution {@link JobExecution} instance to be saved. */ void saveJobExecution(JobExecution jobExecution); /** * Update and existing JobExecution. * * Preconditions: jobExecution must have an Id (which can be obtained by the * save method) and a jobInstanceId. * * @param jobExecution {@link JobExecution} instance to be updated. */ void updateJobExecution(JobExecution jobExecution); /** * Return all {@link JobExecution}s for given {@link JobInstance}, sorted * backwards by creation order (so the first element is the most recent). * * @param jobInstance parent {@link JobInstance} of the {@link JobExecution}s to find. * @return {@link List} containing JobExecutions for the jobInstance. */ List<JobExecution> findJobExecutions(JobInstance jobInstance); /** * Find the last {@link JobExecution} to have been created for a given * {@link JobInstance}. * @param jobInstance the {@link JobInstance} * @return the last {@link JobExecution} to execute for this instance or * {@code null} if no job execution is found for the given job instance. */ @Nullable JobExecution getLastJobExecution(JobInstance jobInstance); /** * @param jobName {@link String} containing the name of the job. * @return all {@link JobExecution} that are still running (or indeterminate * state), i.e. having null end date, for the specified job name. */ Set<JobExecution> findRunningJobExecutions(String jobName); /** * @param executionId {@link Long} containing the id of the execution. * @return the {@link JobExecution} for given identifier. */ @Nullable JobExecution getJobExecution(Long executionId); /** * Because it may be possible that the status of a JobExecution is updated * while running, the following method will synchronize only the status and * version fields. * * @param jobExecution to be updated. */ void synchronizeStatus(JobExecution jobExecution); }