title: Spring Batch writer depending on processed item
body: <p>How to change or choose a specific writer depending on item property ?
  For example, I need to write to different SQL table (Table A and B).</p>
  
  <blockquote>
    <p>if(item.myBoolean==true) { Write to A and B } else { Write only on A }</p>
  </blockquote>
  
  <p>How to choose wich <code>JdbcBatchItemWriter</code> to use ? (Actually I use a <code>CompositeItemWriter</code> to write into my 2 <code>JdbcBatchItemWriter</code>)
  Do I need to create a custom ItemWriter "decider" or there is another best solution (from processor) ? </p>