title: Solr - Querying on nested child documents
body: <p>I have a requirement where in a parent document has two child documents . For example , the doc which is indexed looks like this ,</p>
  
  <pre><code>{
  "id":123,
  "name":"nithin",
  "_childDocuments_":[
  {
  "id":"22"
  "place":"blr",
  "parent_id":123,
  "street":"inagar"
  },
  {
  "id":"23"
  "place":"tvm",
  "parent_id":123,
  "street":"bakery"
  }
  ]
  }
  </code></pre>
  
  <p>Here the name - nithin has two child documents with distinct place and street . My requirement is to query for all parents with a specific place and/or street .
  Lets say blr and bakery. If i fire a query saying (blr and bakery) it would not return any results . I cant use blr or bakery because i want a parent document for which the child docs should have blr and bakery . How do i achieve this ?</p>