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<td class="colFirst"><code><a href="../../../../../jakarta/batch/api/partition/PartitionPlan.html" title="interface in jakarta.batch.api.partition">PartitionPlan</a></code></td>
<td class="colLast"><span class="typeNameLabel">PartitionMapper.</span><code><span class="memberNameLink"><a href="../../../../../jakarta/batch/api/partition/PartitionMapper.html#mapPartitions--">mapPartitions</a></span>()</code>
<div class="block">The mapPartitions method that receives control at the 
 start of partitioned step 