title: Decision Table with a condition on a set containing values coming from lists
body: <p>Using Drools 6.0.1 I would like to set a <strong>CONDITION</strong> (on a column of a Decision Table) similar to the following one:</p>
  
  <pre><code>ProductDrools(productCategories contains $param)
  </code></pre>
  
  <p>(that then would go in every rule after a <code>when</code> in a <code>drl</code> file) where <code>productCategories</code> is a <code>Set</code> (e.g. an <code>HashSet</code>) that, for now, I am only able to check against one string per cell e.g. <code>"categoryA"</code>.</p>
  
  <p>I would like to provide in the spreadsheet cell a <code>List</code>, array, <code>Set</code> (any <code>Collection</code>) of multiple strings representing categories e.g. <code>"categoryA", "catB", "catX"</code>. 
  The <a href="http://docs.jboss.org/drools/release/6.0.1.Final/drools-docs/html/" rel="nofollow" title="official documentation for Drools 6.0.1">official documentation for Drools 6.0.1</a> does not provide enough information regarding operators like <code>contains</code>.</p>
  
  <p>Is this scenario achievable? How? Is there any documentation regarding this you could point me to?</p>