title: Spring Batch: ItemReader or ItemStream?
body: <p>I'm creating a new Spring Batch service.</p>
  <p>Reading documentation comes at head some questions:</p>
  <ol>
  <li>It's not clear to me if it's preferible to use <code>ItemReader</code> or <code>ItemStream</code>?</li>
  <li>Can I use Repositories instead of uing <code>JdbcTemplate</code>?</li>
  </ol>
  <p>I need to import data from mssql to solr.</p>