spring-batch BasicPartitioner 源码
spring-batch BasicPartitioner 代码
文件路径：/spring-batch-samples/src/main/java/org/springframework/batch/sample/remotepartitioning/BasicPartitioner.java
/*
* Copyright 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.sample.remotepartitioning;
import java.util.Map;
import org.springframework.batch.core.partition.support.SimplePartitioner;
import org.springframework.batch.item.ExecutionContext;
/**
* Simple partitioner for demonstration purpose.
*
* @author Mahmoud Ben Hassine
*/
public class BasicPartitioner extends SimplePartitioner {
private static final String PARTITION_KEY = "partition";
@Override
public Map<String, ExecutionContext> partition(int gridSize) {
Map<String, ExecutionContext> partitions = super.partition(gridSize);
int i = 0;
for (ExecutionContext context : partitions.values()) {
context.put(PARTITION_KEY, PARTITION_KEY + (i++));
}
return partitions;
}
}
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