org.springframework.batch.core.launch.support.DataFieldMaxValueJobParametersIncrementer Maven / Gradle / Ivy
/*
* Copyright 2020 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.support;
import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.JobParametersBuilder;
import org.springframework.batch.core.JobParametersIncrementer;
import org.springframework.jdbc.support.incrementer.DataFieldMaxValueIncrementer;
import org.springframework.util.Assert;
/**
* This incrementer uses a {@link DataFieldMaxValueIncrementer} to generate
* the sequence of values to use as job instance discriminator.
*
* @author Gregory D. Hopkins
* @author Mahmoud Ben Hassine
*/
public class DataFieldMaxValueJobParametersIncrementer implements JobParametersIncrementer {
/**
* Default key used as a job parameter.
*/
public static final String DEFAULT_KEY = "run.id";
private String key = DEFAULT_KEY;
private DataFieldMaxValueIncrementer dataFieldMaxValueIncrementer;
/**
* Create a new {@link DataFieldMaxValueJobParametersIncrementer}.
*
* @param dataFieldMaxValueIncrementer the incrementer to use to generate
* the sequence of values. Must not be {@code null}.
*/
public DataFieldMaxValueJobParametersIncrementer(DataFieldMaxValueIncrementer dataFieldMaxValueIncrementer) {
Assert.notNull(dataFieldMaxValueIncrementer, "dataFieldMaxValueIncrementer must not be null");
this.dataFieldMaxValueIncrementer = dataFieldMaxValueIncrementer;
}
@Override
public JobParameters getNext(JobParameters jobParameters) {
return new JobParametersBuilder(jobParameters == null ? new JobParameters() : jobParameters)
.addLong(this.key, this.dataFieldMaxValueIncrementer.nextLongValue())
.toJobParameters();
}
/**
* Get the key. Defaults to {@link #DEFAULT_KEY}.
*
* @return the key
*/
public String getKey() {
return this.key;
}
/**
* The name of the key to use as a job parameter. Defaults to {@link #DEFAULT_KEY}.
* Must not be {@code null} or empty.
*
* @param key the key to set
*/
public void setKey(String key) {
Assert.hasText(key, "key must not be null or empty");
this.key = key;
}
/**
* Get the incrementer.
*
* @return the incrementer
*/
public DataFieldMaxValueIncrementer getDataFieldMaxValueIncrementer() {
return this.dataFieldMaxValueIncrementer;
}
/**
* The incrementer to generate the sequence of values. Must not be {@code null}.
*
* @param dataFieldMaxValueIncrementer the incrementer to generate the sequence of values
*/
public void setDataFieldMaxValueIncrementer(DataFieldMaxValueIncrementer dataFieldMaxValueIncrementer) {
Assert.notNull(dataFieldMaxValueIncrementer, "dataFieldMaxValueIncrementer must not be null");
this.dataFieldMaxValueIncrementer = dataFieldMaxValueIncrementer;
}
}