org.springframework.batch.core.jsr.JsrJobParametersConverter Maven / Gradle / Ivy
/*
* Copyright 2013-2018 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.jsr;
import java.util.Map;
import java.util.Properties;
import javax.sql.DataSource;
import org.springframework.batch.core.JobParameter;
import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.JobParametersBuilder;
import org.springframework.batch.core.converter.JobParametersConverter;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.repository.dao.AbstractJdbcBatchMetadataDao;
import org.springframework.batch.item.database.support.DataFieldMaxValueIncrementerFactory;
import org.springframework.batch.item.database.support.DefaultDataFieldMaxValueIncrementerFactory;
import org.springframework.batch.support.DatabaseType;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.jdbc.support.incrementer.DataFieldMaxValueIncrementer;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Provides default conversion methodology for JSR-352's implementation.
*
* Since Spring Batch uses job parameters as a way of identifying a job
* instance, this converter will add an additional identifying parameter if
* it does not exist already in the list. The id for the identifying parameter
* will come from the JOB_SEQ sequence as used to generate the unique ids
* for BATCH_JOB_INSTANCE records.
*
* @author Michael Minella
* @author Mahmoud Ben Hassine
* @since 3.0
*/
public class JsrJobParametersConverter implements JobParametersConverter, InitializingBean {
public static final String JOB_RUN_ID = "jsr_batch_run_id";
public DataFieldMaxValueIncrementer incrementer;
public String tablePrefix = AbstractJdbcBatchMetadataDao.DEFAULT_TABLE_PREFIX;
public DataSource dataSource;
/**
* Main constructor.
*
* @param dataSource used to gain access to the database to get unique ids.
*/
public JsrJobParametersConverter(DataSource dataSource) {
Assert.notNull(dataSource, "A DataSource is required");
this.dataSource = dataSource;
}
/**
* The table prefix used in the current {@link JobRepository}
*
* @param tablePrefix the table prefix used for the job repository tables
*/
public void setTablePrefix(String tablePrefix) {
this.tablePrefix = tablePrefix;
}
@Override
public void afterPropertiesSet() throws Exception {
DataFieldMaxValueIncrementerFactory factory = new DefaultDataFieldMaxValueIncrementerFactory(dataSource);
this.incrementer = factory.getIncrementer(DatabaseType.fromMetaData(dataSource).name(), tablePrefix + "JOB_SEQ");
}
/* (non-Javadoc)
* @see org.springframework.batch.core.converter.JobParametersConverter#getJobParameters(java.util.Properties)
*/
@Override
public JobParameters getJobParameters(@Nullable Properties properties) {
JobParametersBuilder builder = new JobParametersBuilder();
boolean runIdFound = false;
if(properties != null) {
for (Map.Entry