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POApproach to read data from mongodb using reactive mongo irrespective of the structure
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copied!<p>I'm using reactivemongo.</p> <p>While reading document from mongodb I have written code specific to the structure.</p> <h2>Structure</h2> <pre><code>{ "name" : "test", "age" : 3 } </code></pre> <p>For reading this I am using code like : </p> <pre class="lang-scala prettyprint-override"><code>val cursor = collection.find(query).cursor[BSONDocument] cursor.enumerate.apply(Iteratee.foreach { doc => var name: BSONDocument = doc.getAs[String]("name").get var age: BSONDocument = doc.getAs[Int]("age").get } </code></pre> <p>So now if later on, BSON structure gets changed like:</p> <pre><code>{ "name" : { firstName : "fname", lastName : "lname" }, "age" : 3 } </code></pre> <h2>So now I have to change my code for reading it</h2> <pre class="lang-scala prettyprint-override"><code>val cursor = collection.find(query).cursor[BSONDocument] cursor.enumerate.apply(Iteratee.foreach { doc => var name: BSONDocument = doc.getAs[BSONDocument]("name").get var fname : String = name.getAs[String]("firstName").get var lname : String = name.getAs[String]("lastName").get var age: BSONDocument = doc.getAs[Int]("age").get } </code></pre> <p>I want to keep the data, which is currently using the old structure (i.e "name" as string) and insert new data using the new structure (i.e "name" as BSONDocument).</p> <p>While reading document with old structure an exception "None.get" is thrown, because as per the read method "name" should be a BSONDocument.</p> <p>What should be my approach to handle this issue??</p>

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