title: Can we index data from different mongodb collections as one single document on solr
body: <p>What I am trying to do is that there are different microservices which uses its own collections. I want to create one single document on solr which contains information from all these collections. Would that be possible to achieve using mongo connectors for solr?</p>
  <p>eg: collection 1 has below data</p>
  <pre><code>{
  &quot;name&quot;:&quot;Rob&quot;,
  &quot;employeeId&quot;:&quot;123&quot;,
  &quot;designation&quot;:&quot;software engineer&quot;
  }
  </code></pre>
  <p>collection 2 has below data</p>
  <pre><code>{
  &quot;employeeId&quot;:&quot;123&quot;,
  &quot;hobby&quot;:&quot;painting&quot;
  }
  </code></pre>
  <p>In solr I want to populate this as</p>
  <pre><code>{
  &quot;employeeId&quot;:&quot;123&quot;,
  &quot;hobby&quot;:&quot;painting&quot;,
  &quot;name&quot;:&quot;Rob&quot;
  }
  </code></pre>